time-nuts@lists.febo.com

Discussion of precise time and frequency measurement

View all threads

Re: [time-nuts] Oncore VP problem

RK
Rob Kimberley
Thu, Jul 19, 2007 4:57 PM

Jamie,

Have checked and have the following 2201 manuals (note not 2201A)

Model 2201 Op & Maintenance manual P/N 12711946 REV A  (received from
Austron March '91)
2200/2201 Loran-C Assist Module Option P/N 12812503
2029A GPS Antenna P/N 12712553-2  REV A (received from Austron March '92)
2201 OCXO Option Module Manual P/N 12712281 REV A  (March '91)
2201 OCXO Option Module Manual P/N 12712122 REV A (March '91)

Let me know if you are interested and your mailing address.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of James R. Gorr
Sent: 19 July 2007 15:28
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c
om

Thanks, Rob!

My unit has:
23411437-2 Time Code (IRIG-B)
23411900  Sine Output

I also have a 23412342 LORAN MODULE, not sure if it is for this unit.

Thanks for checking.

Jamie

--- Rob Kimberley rk@timing-consultants.com wrote:

Jamie,

I believe I have one in the "store". Will take a look tonight when I
get back. May also be some of the module manuals. What plug-ins does
it have?

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces@febo.com
[mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr
Sent: 18 July 2007 23:30
To: time-nuts@febo.com
Subject: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:

time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@fe
time-nuts-bounces+bo.c

om

Looking for a manual for an Austron 2201A GPS receiver.

Thanks!  --Jamie



Building a website is a piece of cake. Yahoo! Small Business gives you all
the tools to get online.
http://smallbusiness.yahoo.com/webhosting


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Jamie, Have checked and have the following 2201 manuals (note not 2201A) Model 2201 Op & Maintenance manual P/N 12711946 REV A (received from Austron March '91) 2200/2201 Loran-C Assist Module Option P/N 12812503 2029A GPS Antenna P/N 12712553-2 REV A (received from Austron March '92) 2201 OCXO Option Module Manual P/N 12712281 REV A (March '91) 2201 OCXO Option Module Manual P/N 12712122 REV A (March '91) Let me know if you are interested and your mailing address. Rob -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr Sent: 19 July 2007 15:28 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] manual request: Austron 2201A ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c om Thanks, Rob! My unit has: 23411437-2 Time Code (IRIG-B) 23411900 Sine Output I also have a 23412342 LORAN MODULE, not sure if it is for this unit. Thanks for checking. Jamie --- Rob Kimberley <rk@timing-consultants.com> wrote: > Jamie, > > I believe I have one in the "store". Will take a look tonight when I > get back. May also be some of the module manuals. What plug-ins does > it have? > > Rob Kimberley > > -----Original Message----- > From: time-nuts-bounces@febo.com > [mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr > Sent: 18 July 2007 23:30 > To: time-nuts@febo.com > Subject: [time-nuts] manual request: Austron 2201A > > ); SAEximRunCond expanded to false > Errors-To: > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@fe time-nuts-bounces+bo.c > om > > > Looking for a manual for an Austron 2201A GPS receiver. > > Thanks! --Jamie > > ____________________________________________________________________________ ________ Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
BC
Brooke Clarke
Thu, Jul 19, 2007 5:22 PM

Hi Rob:

I have an Quantic Q5200 GPS receiver that needs a special down converting
antenna and have never seen one.  I've thought of making one, but don't have
enough information for the design.  Does the 2029A manual have a block diagram
or other design information?

The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up the
cable to the Antenna Module. The Antenna Module receives the satellite L1
frequency and down converts the signal to an IF of 153.028 MHz which is sent
down the cable to the receiver.  http://www.prc68.com/I/Q5200.shtml
But how is a mystery.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com

Rob Kimberley wrote:

); SAEximRunCond expanded to false
Errors-To: time-nuts-bounces+brooke=pacific.net+brooke=pacific.net@febo.com

Jamie,

Have checked and have the following 2201 manuals (note not 2201A)

Model 2201 Op & Maintenance manual P/N 12711946 REV A  (received from
Austron March '91)
2200/2201 Loran-C Assist Module Option P/N 12812503
2029A GPS Antenna P/N 12712553-2  REV A (received from Austron March '92)
2201 OCXO Option Module Manual P/N 12712281 REV A  (March '91)
2201 OCXO Option Module Manual P/N 12712122 REV A (March '91)

Let me know if you are interested and your mailing address.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of James R. Gorr
Sent: 19 July 2007 15:28
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c
om

Thanks, Rob!

My unit has:
23411437-2 Time Code (IRIG-B)
23411900  Sine Output

I also have a 23412342 LORAN MODULE, not sure if it is for this unit.

Thanks for checking.

Jamie

--- Rob Kimberley rk@timing-consultants.com wrote:

Jamie,

I believe I have one in the "store". Will take a look tonight when I
get back. May also be some of the module manuals. What plug-ins does
it have?

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces@febo.com
[mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr
Sent: 18 July 2007 23:30
To: time-nuts@febo.com
Subject: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:

time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@fe
time-nuts-bounces+bo.c

om

Looking for a manual for an Austron 2201A GPS receiver.

Thanks!  --Jamie



Building a website is a piece of cake. Yahoo! Small Business gives you all
the tools to get online.
http://smallbusiness.yahoo.com/webhosting


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi Rob: I have an Quantic Q5200 GPS receiver that needs a special down converting antenna and have never seen one. I've thought of making one, but don't have enough information for the design. Does the 2029A manual have a block diagram or other design information? The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up the cable to the Antenna Module. The Antenna Module receives the satellite L1 frequency and down converts the signal to an IF of 153.028 MHz which is sent down the cable to the receiver. http://www.prc68.com/I/Q5200.shtml But how is a mystery. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com Rob Kimberley wrote: > ); SAEximRunCond expanded to false > Errors-To: time-nuts-bounces+brooke=pacific.net+brooke=pacific.net@febo.com > > Jamie, > > Have checked and have the following 2201 manuals (note not 2201A) > > Model 2201 Op & Maintenance manual P/N 12711946 REV A (received from > Austron March '91) > 2200/2201 Loran-C Assist Module Option P/N 12812503 > 2029A GPS Antenna P/N 12712553-2 REV A (received from Austron March '92) > 2201 OCXO Option Module Manual P/N 12712281 REV A (March '91) > 2201 OCXO Option Module Manual P/N 12712122 REV A (March '91) > > Let me know if you are interested and your mailing address. > > Rob > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > Behalf Of James R. Gorr > Sent: 19 July 2007 15:28 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] manual request: Austron 2201A > > ); SAEximRunCond expanded to false > Errors-To: > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c > om > > > Thanks, Rob! > > My unit has: > 23411437-2 Time Code (IRIG-B) > 23411900 Sine Output > > I also have a 23412342 LORAN MODULE, not sure if it is for this unit. > > Thanks for checking. > > Jamie > > --- Rob Kimberley <rk@timing-consultants.com> wrote: > > >>Jamie, >> >>I believe I have one in the "store". Will take a look tonight when I >>get back. May also be some of the module manuals. What plug-ins does >>it have? >> >>Rob Kimberley >> >>-----Original Message----- >>From: time-nuts-bounces@febo.com >>[mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr >>Sent: 18 July 2007 23:30 >>To: time-nuts@febo.com >>Subject: [time-nuts] manual request: Austron 2201A >> >>); SAEximRunCond expanded to false >>Errors-To: >> > > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@fe > time-nuts-bounces+bo.c > >>om >> >> >>Looking for a manual for an Austron 2201A GPS receiver. >> >>Thanks! --Jamie >> >> > > > > > ____________________________________________________________________________ > ________ > Building a website is a piece of cake. Yahoo! Small Business gives you all > the tools to get online. > http://smallbusiness.yahoo.com/webhosting > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >
RK
Rob Kimberley
Thu, Jul 19, 2007 6:34 PM

Hi Brooke,

Good to hear from you.

The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at
175mA.

The manual I have is pretty thin - no schematics just a spec block diagram
and an installation guide. Will email you block diagram directly.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Brooke Clarke
Sent: 19 July 2007 18:22
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c
om

Hi Rob:

I have an Quantic Q5200 GPS receiver that needs a special down converting
antenna and have never seen one.  I've thought of making one, but don't have
enough information for the design.  Does the 2029A manual have a block
diagram or other design information?

The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up
the cable to the Antenna Module. The Antenna Module receives the satellite
L1 frequency and down converts the signal to an IF of 153.028 MHz which is
sent down the cable to the receiver.  http://www.prc68.com/I/Q5200.shtml
But how is a mystery.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com

Rob Kimberley wrote:

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+brooke=pacific.net+brooke=pacific.net@febo.com

Jamie,

Have checked and have the following 2201 manuals (note not 2201A)

Model 2201 Op & Maintenance manual P/N 12711946 REV A  (received from
Austron March '91)
2200/2201 Loran-C Assist Module Option P/N 12812503 2029A GPS Antenna
P/N 12712553-2  REV A (received from Austron March '92)
2201 OCXO Option Module Manual P/N 12712281 REV A  (March '91)
2201 OCXO Option Module Manual P/N 12712122 REV A (March '91)

Let me know if you are interested and your mailing address.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com]
On Behalf Of James R. Gorr
Sent: 19 July 2007 15:28
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@
time-nuts-bounces+febo.c
om

Thanks, Rob!

My unit has:
23411437-2 Time Code (IRIG-B)
23411900  Sine Output

I also have a 23412342 LORAN MODULE, not sure if it is for this unit.

Thanks for checking.

Jamie

--- Rob Kimberley rk@timing-consultants.com wrote:

Jamie,

I believe I have one in the "store". Will take a look tonight when I
get back. May also be some of the module manuals. What plug-ins does
it have?

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces@febo.com
[mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr
Sent: 18 July 2007 23:30
To: time-nuts@febo.com
Subject: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:

time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@
time-nuts-bounces+fe
time-nuts-bounces+bo.c

om

Looking for a manual for an Austron 2201A GPS receiver.

Thanks!  --Jamie




Building a website is a piece of cake. Yahoo! Small Business gives you
all the tools to get online.
http://smallbusiness.yahoo.com/webhosting


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi Brooke, Good to hear from you. The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at 175mA. The manual I have is pretty thin - no schematics just a spec block diagram and an installation guide. Will email you block diagram directly. Rob -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Brooke Clarke Sent: 19 July 2007 18:22 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] manual request: Austron 2201A ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c om Hi Rob: I have an Quantic Q5200 GPS receiver that needs a special down converting antenna and have never seen one. I've thought of making one, but don't have enough information for the design. Does the 2029A manual have a block diagram or other design information? The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up the cable to the Antenna Module. The Antenna Module receives the satellite L1 frequency and down converts the signal to an IF of 153.028 MHz which is sent down the cable to the receiver. http://www.prc68.com/I/Q5200.shtml But how is a mystery. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com Rob Kimberley wrote: > ); SAEximRunCond expanded to false > Errors-To: > time-nuts-bounces+brooke=pacific.net+brooke=pacific.net@febo.com > > Jamie, > > Have checked and have the following 2201 manuals (note not 2201A) > > Model 2201 Op & Maintenance manual P/N 12711946 REV A (received from > Austron March '91) > 2200/2201 Loran-C Assist Module Option P/N 12812503 2029A GPS Antenna > P/N 12712553-2 REV A (received from Austron March '92) > 2201 OCXO Option Module Manual P/N 12712281 REV A (March '91) > 2201 OCXO Option Module Manual P/N 12712122 REV A (March '91) > > Let me know if you are interested and your mailing address. > > Rob > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] > On Behalf Of James R. Gorr > Sent: 19 July 2007 15:28 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] manual request: Austron 2201A > > ); SAEximRunCond expanded to false > Errors-To: > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@ > time-nuts-bounces+febo.c > om > > > Thanks, Rob! > > My unit has: > 23411437-2 Time Code (IRIG-B) > 23411900 Sine Output > > I also have a 23412342 LORAN MODULE, not sure if it is for this unit. > > Thanks for checking. > > Jamie > > --- Rob Kimberley <rk@timing-consultants.com> wrote: > > >>Jamie, >> >>I believe I have one in the "store". Will take a look tonight when I >>get back. May also be some of the module manuals. What plug-ins does >>it have? >> >>Rob Kimberley >> >>-----Original Message----- >>From: time-nuts-bounces@febo.com >>[mailto:time-nuts-bounces@febo.com] On Behalf Of James R. Gorr >>Sent: 18 July 2007 23:30 >>To: time-nuts@febo.com >>Subject: [time-nuts] manual request: Austron 2201A >> >>); SAEximRunCond expanded to false >>Errors-To: >> > > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@ > time-nuts-bounces+fe > time-nuts-bounces+bo.c > >>om >> >> >>Looking for a manual for an Austron 2201A GPS receiver. >> >>Thanks! --Jamie >> >> > > > > > ______________________________________________________________________ > ______ > ________ > Building a website is a piece of cake. Yahoo! Small Business gives you > all the tools to get online. > http://smallbusiness.yahoo.com/webhosting > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
BC
Brooke Clarke
Thu, Jul 19, 2007 7:49 PM

Hi Rob:

The Austron antenna is very straight forward.  A 10.0 MHz ref is sent up the
coax along with 15VDC.  The antenna multiplied by 50 and uses the 500 MHz to
drive a harmonic mixer thus subtracting 1500 MHz from L1 leaving 75 MHz to go
down the coax.  Simple and clean.

There must have been some special consideration that caused Quantic to use such
a strange scheme.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com

Rob Kimberley wrote:

Hi Brooke,

Good to hear from you.

The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at
175mA.

The manual I have is pretty thin - no schematics just a spec block diagram
and an installation guide. Will email you block diagram directly.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Brooke Clarke
Sent: 19 July 2007 18:22
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c
om

Hi Rob:

I have an Quantic Q5200 GPS receiver that needs a special down converting
antenna and have never seen one.  I've thought of making one, but don't have
enough information for the design.  Does the 2029A manual have a block
diagram or other design information?

The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up
the cable to the Antenna Module. The Antenna Module receives the satellite
L1 frequency and down converts the signal to an IF of 153.028 MHz which is
sent down the cable to the receiver.  http://www.prc68.com/I/Q5200.shtml
But how is a mystery.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com

Hi Rob: The Austron antenna is very straight forward. A 10.0 MHz ref is sent up the coax along with 15VDC. The antenna multiplied by 50 and uses the 500 MHz to drive a harmonic mixer thus subtracting 1500 MHz from L1 leaving 75 MHz to go down the coax. Simple and clean. There must have been some special consideration that caused Quantic to use such a strange scheme. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com Rob Kimberley wrote: > Hi Brooke, > > Good to hear from you. > > The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at > 175mA. > > The manual I have is pretty thin - no schematics just a spec block diagram > and an installation guide. Will email you block diagram directly. > > Rob > > > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On > Behalf Of Brooke Clarke > Sent: 19 July 2007 18:22 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] manual request: Austron 2201A > > ); SAEximRunCond expanded to false > Errors-To: > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c > om > > Hi Rob: > > I have an Quantic Q5200 GPS receiver that needs a special down converting > antenna and have never seen one. I've thought of making one, but don't have > enough information for the design. Does the 2029A manual have a block > diagram or other design information? > > The Q5200 sends both +15 Vdc power and a 11.114 MHz reference frequency up > the cable to the Antenna Module. The Antenna Module receives the satellite > L1 frequency and down converts the signal to an IF of 153.028 MHz which is > sent down the cable to the receiver. http://www.prc68.com/I/Q5200.shtml > But how is a mystery. > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.precisionclock.com >
RK
Rob Kimberley
Thu, Jul 19, 2007 8:40 PM

Hi Brooke,

I agree. When I looked at the Quantic numbers you gave me, I sort of hit a
mental block - not logical to me.

Meinberg's current GPS antenna has following characteristics

10 MHz LO
35.4 MHz IF
12V - 18VDC Power

http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf

For more info.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Brooke Clarke
Sent: 19 July 2007 20:50
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c
om

Hi Rob:

The Austron antenna is very straight forward.  A 10.0 MHz ref is sent up the
coax along with 15VDC.  The antenna multiplied by 50 and uses the 500 MHz to
drive a harmonic mixer thus subtracting 1500 MHz from L1 leaving 75 MHz to
go down the coax.  Simple and clean.

There must have been some special consideration that caused Quantic to use
such a strange scheme.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com

Rob Kimberley wrote:

Hi Brooke,

Good to hear from you.

The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at
175mA.

The manual I have is pretty thin - no schematics just a spec block
diagram and an installation guide. Will email you block diagram directly.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com]
On Behalf Of Brooke Clarke
Sent: 19 July 2007 18:22
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@
time-nuts-bounces+febo.c
om

Hi Rob:

I have an Quantic Q5200 GPS receiver that needs a special down
converting antenna and have never seen one.  I've thought of making
one, but don't have enough information for the design.  Does the 2029A
manual have a block diagram or other design information?

The Q5200 sends both +15 Vdc power and a 11.114 MHz reference
frequency up the cable to the Antenna Module. The Antenna Module
receives the satellite
L1 frequency and down converts the signal to an IF of 153.028 MHz
which is sent down the cable to the receiver.
http://www.prc68.com/I/Q5200.shtml
But how is a mystery.

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.precisionclock.com


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi Brooke, I agree. When I looked at the Quantic numbers you gave me, I sort of hit a mental block - not logical to me. Meinberg's current GPS antenna has following characteristics 10 MHz LO 35.4 MHz IF 12V - 18VDC Power http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf For more info. Rob -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Brooke Clarke Sent: 19 July 2007 20:50 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] manual request: Austron 2201A ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c om Hi Rob: The Austron antenna is very straight forward. A 10.0 MHz ref is sent up the coax along with 15VDC. The antenna multiplied by 50 and uses the 500 MHz to drive a harmonic mixer thus subtracting 1500 MHz from L1 leaving 75 MHz to go down the coax. Simple and clean. There must have been some special consideration that caused Quantic to use such a strange scheme. Have Fun, Brooke Clarke http://www.PRC68.com http://www.precisionclock.com Rob Kimberley wrote: > Hi Brooke, > > Good to hear from you. > > The Austron 2029A used 10 MHz LO and a 75.42MHz IF. Power was 15VDC at > 175mA. > > The manual I have is pretty thin - no schematics just a spec block > diagram and an installation guide. Will email you block diagram directly. > > Rob > > > > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] > On Behalf Of Brooke Clarke > Sent: 19 July 2007 18:22 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] manual request: Austron 2201A > > ); SAEximRunCond expanded to false > Errors-To: > time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@ > time-nuts-bounces+febo.c > om > > Hi Rob: > > I have an Quantic Q5200 GPS receiver that needs a special down > converting antenna and have never seen one. I've thought of making > one, but don't have enough information for the design. Does the 2029A > manual have a block diagram or other design information? > > The Q5200 sends both +15 Vdc power and a 11.114 MHz reference > frequency up the cable to the Antenna Module. The Antenna Module > receives the satellite > L1 frequency and down converts the signal to an IF of 153.028 MHz > which is sent down the cable to the receiver. > http://www.prc68.com/I/Q5200.shtml > But how is a mystery. > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.precisionclock.com > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
MD
Magnus Danielson
Thu, Jul 19, 2007 11:12 PM

From: "Rob Kimberley" rk@timing-consultants.com
Subject: Re: [time-nuts] manual request: Austron 2201A
Date: Thu, 19 Jul 2007 21:40:32 +0100
Message-ID: !&!AAAAAAAAAAAYAAAAAAAAAOYAZyOzV8ERq+LmT45ypI7CgAAAEAAAAHNkDDJzE/pPgmlezQHl6CkBAAAAAA==@timing-consultants.com

Hi Rob,

I agree. When I looked at the Quantic numbers you gave me, I sort of hit a
mental block - not logical to me.

Meinberg's current GPS antenna has following characteristics

10 MHz LO
35.4 MHz IF
12V - 18VDC Power

http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf

For more info.

Lower cable damping at lower frequencies allows for longer cable runs. Very
handy when considering putting GPS receivers into underground telecom bunkers.
Fiber link is also a very good thing in those cases. Both is a must if you
want to play in that leage, and Meinberg wants that.

Now, If you look at the Zarlink GP2015 GPS Frontend chip you will find how
well it fits with this scheme. You apply 10 MHz to the chip, it PLL locks a
1,4 GHz VCO and mixes down with that (1575,42 - 1400 = 175,42 MHz), then it
goes for a filtering round and then comes back for the second mixer at a tenth
of the VCO frequency, i.e. 140 MHz (175,52 - 140 = 35,42 MHz) again goes out
for a filtering-round (through a SAW filter) and back in for a mixdown with
31,11 MHz (actually 280 / 9 MHz) producing a 4,309 MHz signal which is then
sampled at 5,714 MHz (actually 40 / 7 MHz) producing 1,405 MHz carrier
frequency in the 5,714 Msamples/s 2-bit datastream.

The Meinberg trick can be done by simply put one frontend chip in the antenna
and another in the receiver. Both is fed the same 10 MHz clock but you pick up
the signal after the 2nd mixdown stage and transport that IF over the cable
and then toss in it at that place in the receivers frontend. The AGC there will
automatically compensate for cable damping which happends around the 3rd
mixdown. The HF part of the frontend in the receiver it just kept as dead
functionality. Same goes for the 3rd stage in the antenna.

Fairly clean and simple.

Cheers,
Magnus

From: "Rob Kimberley" <rk@timing-consultants.com> Subject: Re: [time-nuts] manual request: Austron 2201A Date: Thu, 19 Jul 2007 21:40:32 +0100 Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAOYAZyOzV8ERq+LmT45ypI7CgAAAEAAAAHNkDDJzE/pPgmlezQHl6CkBAAAAAA==@timing-consultants.com> Hi Rob, > I agree. When I looked at the Quantic numbers you gave me, I sort of hit a > mental block - not logical to me. > > Meinberg's current GPS antenna has following characteristics > > 10 MHz LO > 35.4 MHz IF > 12V - 18VDC Power > > http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf > > For more info. Lower cable damping at lower frequencies allows for longer cable runs. Very handy when considering putting GPS receivers into underground telecom bunkers. Fiber link is also a very good thing in those cases. Both is a must if you want to play in that leage, and Meinberg wants that. Now, If you look at the Zarlink GP2015 GPS Frontend chip you will find how well it fits with this scheme. You apply 10 MHz to the chip, it PLL locks a 1,4 GHz VCO and mixes down with that (1575,42 - 1400 = 175,42 MHz), then it goes for a filtering round and then comes back for the second mixer at a tenth of the VCO frequency, i.e. 140 MHz (175,52 - 140 = 35,42 MHz) again goes out for a filtering-round (through a SAW filter) and back in for a mixdown with 31,11 MHz (actually 280 / 9 MHz) producing a 4,309 MHz signal which is then sampled at 5,714 MHz (actually 40 / 7 MHz) producing 1,405 MHz carrier frequency in the 5,714 Msamples/s 2-bit datastream. The Meinberg trick can be done by simply put one frontend chip in the antenna and another in the receiver. Both is fed the same 10 MHz clock but you pick up the signal after the 2nd mixdown stage and transport that IF over the cable and then toss in it at that place in the receivers frontend. The AGC there will automatically compensate for cable damping which happends around the 3rd mixdown. The HF part of the frontend in the receiver it just kept as dead functionality. Same goes for the 3rd stage in the antenna. Fairly clean and simple. Cheers, Magnus
RA
Robert Atkinson
Fri, Jul 20, 2007 7:15 AM

Hi,
Many of the Odetics SatSync receivers also used this scheme. I've had a
few of the receivers but never seen an antenna. Some were modified with
a Magellan OEM 5000 module and use a standard (12V) antenna.

Robert.

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Magnus Danielson
Sent: 20 July 2007 00:12
To: time-nuts@febo.com; rk@timing-consultants.com
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+robert.atkinson=genetix.com+robert.atkinson=genetix.co
m@febo.com

From: "Rob Kimberley" rk@timing-consultants.com
Subject: Re: [time-nuts] manual request: Austron 2201A
Date: Thu, 19 Jul 2007 21:40:32 +0100
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAOYAZyOzV8ERq+LmT45ypI7CgAAAEAAAAHNkDDJzE/pPgmle
zQHl6CkBAAAAAA==@timing-consultants.com>

Hi Rob,

I agree. When I looked at the Quantic numbers you gave me, I sort of

hit a

mental block - not logical to me.

Meinberg's current GPS antenna has following characteristics

10 MHz LO
35.4 MHz IF
12V - 18VDC Power

http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf

For more info.

Lower cable damping at lower frequencies allows for longer cable runs.
Very
handy when considering putting GPS receivers into underground telecom
bunkers.
Fiber link is also a very good thing in those cases. Both is a must if
you
want to play in that leage, and Meinberg wants that.

Now, If you look at the Zarlink GP2015 GPS Frontend chip you will find
how
well it fits with this scheme. You apply 10 MHz to the chip, it PLL
locks a
1,4 GHz VCO and mixes down with that (1575,42 - 1400 = 175,42 MHz), then
it
goes for a filtering round and then comes back for the second mixer at a
tenth
of the VCO frequency, i.e. 140 MHz (175,52 - 140 = 35,42 MHz) again goes
out
for a filtering-round (through a SAW filter) and back in for a mixdown
with
31,11 MHz (actually 280 / 9 MHz) producing a 4,309 MHz signal which is
then
sampled at 5,714 MHz (actually 40 / 7 MHz) producing 1,405 MHz carrier
frequency in the 5,714 Msamples/s 2-bit datastream.

The Meinberg trick can be done by simply put one frontend chip in the
antenna
and another in the receiver. Both is fed the same 10 MHz clock but you
pick up
the signal after the 2nd mixdown stage and transport that IF over the
cable
and then toss in it at that place in the receivers frontend. The AGC
there will
automatically compensate for cable damping which happends around the 3rd
mixdown. The HF part of the frontend in the receiver it just kept as
dead
functionality. Same goes for the 3rd stage in the antenna.

Fairly clean and simple.

Cheers,
Magnus


time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


Genetix Limited - Queensway, New Milton, Hampshire, BH25 5NN  Registered in England No. 2660050  www.genetix.com
Any opinions expressed in this email are those of the individual and not necessarily Genetix Ltd (Genetix) or any company associated with it. This email and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this email in error and that any use is strictly prohibited. If you have received this email in error please notify Genetix by telephone on +44 (0)1425 624600.
The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving Genetix network. Genetix will not be liable for direct, special, indirect or consequential damages as a result of any virus being passed on, or arising from alteration of the contents of this message by a third party.

Hi, Many of the Odetics SatSync receivers also used this scheme. I've had a few of the receivers but never seen an antenna. Some were modified with a Magellan OEM 5000 module and use a standard (12V) antenna. Robert. -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Magnus Danielson Sent: 20 July 2007 00:12 To: time-nuts@febo.com; rk@timing-consultants.com Subject: Re: [time-nuts] manual request: Austron 2201A ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+robert.atkinson=genetix.com+robert.atkinson=genetix.co m@febo.com From: "Rob Kimberley" <rk@timing-consultants.com> Subject: Re: [time-nuts] manual request: Austron 2201A Date: Thu, 19 Jul 2007 21:40:32 +0100 Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAOYAZyOzV8ERq+LmT45ypI7CgAAAEAAAAHNkDDJzE/pPgmle zQHl6CkBAAAAAA==@timing-consultants.com> Hi Rob, > I agree. When I looked at the Quantic numbers you gave me, I sort of hit a > mental block - not logical to me. > > Meinberg's current GPS antenna has following characteristics > > 10 MHz LO > 35.4 MHz IF > 12V - 18VDC Power > > http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf > > For more info. Lower cable damping at lower frequencies allows for longer cable runs. Very handy when considering putting GPS receivers into underground telecom bunkers. Fiber link is also a very good thing in those cases. Both is a must if you want to play in that leage, and Meinberg wants that. Now, If you look at the Zarlink GP2015 GPS Frontend chip you will find how well it fits with this scheme. You apply 10 MHz to the chip, it PLL locks a 1,4 GHz VCO and mixes down with that (1575,42 - 1400 = 175,42 MHz), then it goes for a filtering round and then comes back for the second mixer at a tenth of the VCO frequency, i.e. 140 MHz (175,52 - 140 = 35,42 MHz) again goes out for a filtering-round (through a SAW filter) and back in for a mixdown with 31,11 MHz (actually 280 / 9 MHz) producing a 4,309 MHz signal which is then sampled at 5,714 MHz (actually 40 / 7 MHz) producing 1,405 MHz carrier frequency in the 5,714 Msamples/s 2-bit datastream. The Meinberg trick can be done by simply put one frontend chip in the antenna and another in the receiver. Both is fed the same 10 MHz clock but you pick up the signal after the 2nd mixdown stage and transport that IF over the cable and then toss in it at that place in the receivers frontend. The AGC there will automatically compensate for cable damping which happends around the 3rd mixdown. The HF part of the frontend in the receiver it just kept as dead functionality. Same goes for the 3rd stage in the antenna. Fairly clean and simple. Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -------------------------------------------------------- Genetix Limited - Queensway, New Milton, Hampshire, BH25 5NN Registered in England No. 2660050 www.genetix.com Any opinions expressed in this email are those of the individual and not necessarily Genetix Ltd (Genetix) or any company associated with it. This email and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this email in error and that any use is strictly prohibited. If you have received this email in error please notify Genetix by telephone on +44 (0)1425 624600. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving Genetix network. Genetix will not be liable for direct, special, indirect or consequential damages as a result of any virus being passed on, or arising from alteration of the contents of this message by a third party. --------------------------------------------------------
RK
Rob Kimberley
Fri, Jul 20, 2007 5:36 PM

The Meinberg antenna should work with the SatSync, although not tried one
out.

Rob

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Robert Atkinson
Sent: 20 July 2007 08:16
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c
om

Hi,
Many of the Odetics SatSync receivers also used this scheme. I've had a few
of the receivers but never seen an antenna. Some were modified with a
Magellan OEM 5000 module and use a standard (12V) antenna.

Robert.

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Magnus Danielson
Sent: 20 July 2007 00:12
To: time-nuts@febo.com; rk@timing-consultants.com
Subject: Re: [time-nuts] manual request: Austron 2201A

); SAEximRunCond expanded to false
Errors-To:
time-nuts-bounces+robert.atkinson=genetix.com+robert.atkinson=genetix.co
m@febo.com

From: "Rob Kimberley" rk@timing-consultants.com
Subject: Re: [time-nuts] manual request: Austron 2201A
Date: Thu, 19 Jul 2007 21:40:32 +0100
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAAOYAZyOzV8ERq+LmT45ypI7CgAAAEAAAAHNkDDJzE/pPgmle
zQHl6CkBAAAAAA==@timing-consultants.com>

Hi Rob,

I agree. When I looked at the Quantic numbers you gave me, I sort of

hit a

mental block - not logical to me.

Meinberg's current GPS antenna has following characteristics

10 MHz LO
35.4 MHz IF
12V - 18VDC Power

http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf

For more info.

Lower cable damping at lower frequencies allows for longer cable runs.
Very
handy when considering putting GPS receivers into underground telecom
bunkers.
Fiber link is also a very good thing in those cases. Both is a must if you
want to play in that leage, and Meinberg wants that.

Now, If you look at the Zarlink GP2015 GPS Frontend chip you will find how
well it fits with this scheme. You apply 10 MHz to the chip, it PLL locks a
1,4 GHz VCO and mixes down with that (1575,42 - 1400 = 175,42 MHz), then it
goes for a filtering round and then comes back for the second mixer at a
tenth of the VCO frequency, i.e. 140 MHz (175,52 - 140 = 35,42 MHz) again
goes out for a filtering-round (through a SAW filter) and back in for a
mixdown with
31,11 MHz (actually 280 / 9 MHz) producing a 4,309 MHz signal which is then
sampled at 5,714 MHz (actually 40 / 7 MHz) producing 1,405 MHz carrier
frequency in the 5,714 Msamples/s 2-bit datastream.

The Meinberg trick can be done by simply put one frontend chip in the
antenna and another in the receiver. Both is fed the same 10 MHz clock but
you pick up the signal after the 2nd mixdown stage and transport that IF
over the cable and then toss in it at that place in the receivers frontend.
The AGC there will automatically compensate for cable damping which happends
around the 3rd mixdown. The HF part of the frontend in the receiver it just
kept as dead functionality. Same goes for the 3rd stage in the antenna.

Fairly clean and simple.

Cheers,
Magnus


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


Genetix Limited - Queensway, New Milton, Hampshire, BH25 5NN  Registered in
England No. 2660050  www.genetix.com
Any opinions expressed in this email are those of the individual and not
necessarily Genetix Ltd (Genetix) or any company associated with it. This
email and any files transmitted with it are confidential and solely for the
use of the intended recipient. If you are not the intended recipient or the
person responsible for delivering to the intended recipient, be advised that
you have received this email in error and that any use is strictly
prohibited. If you have received this email in error please notify Genetix
by telephone on +44 (0)1425 624600.
The unauthorised use, disclosure, copying or alteration of this message is
strictly forbidden. This mail and any attachments have been scanned for
viruses prior to leaving Genetix network. Genetix will not be liable for
direct, special, indirect or consequential damages as a result of any virus
being passed on, or arising from alteration of the contents of this message
by a third party.


time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

The Meinberg antenna should work with the SatSync, although not tried one out. Rob -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Robert Atkinson Sent: 20 July 2007 08:16 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] manual request: Austron 2201A ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+rk=timing-consultants.com+rk=timing-consultants.com@febo.c om Hi, Many of the Odetics SatSync receivers also used this scheme. I've had a few of the receivers but never seen an antenna. Some were modified with a Magellan OEM 5000 module and use a standard (12V) antenna. Robert. -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Magnus Danielson Sent: 20 July 2007 00:12 To: time-nuts@febo.com; rk@timing-consultants.com Subject: Re: [time-nuts] manual request: Austron 2201A ); SAEximRunCond expanded to false Errors-To: time-nuts-bounces+robert.atkinson=genetix.com+robert.atkinson=genetix.co m@febo.com From: "Rob Kimberley" <rk@timing-consultants.com> Subject: Re: [time-nuts] manual request: Austron 2201A Date: Thu, 19 Jul 2007 21:40:32 +0100 Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAOYAZyOzV8ERq+LmT45ypI7CgAAAEAAAAHNkDDJzE/pPgmle zQHl6CkBAAAAAA==@timing-consultants.com> Hi Rob, > I agree. When I looked at the Quantic numbers you gave me, I sort of hit a > mental block - not logical to me. > > Meinberg's current GPS antenna has following characteristics > > 10 MHz LO > 35.4 MHz IF > 12V - 18VDC Power > > http://www.meinberg.de/download/docs/manuals/english/gpsant.pdf > > For more info. Lower cable damping at lower frequencies allows for longer cable runs. Very handy when considering putting GPS receivers into underground telecom bunkers. Fiber link is also a very good thing in those cases. Both is a must if you want to play in that leage, and Meinberg wants that. Now, If you look at the Zarlink GP2015 GPS Frontend chip you will find how well it fits with this scheme. You apply 10 MHz to the chip, it PLL locks a 1,4 GHz VCO and mixes down with that (1575,42 - 1400 = 175,42 MHz), then it goes for a filtering round and then comes back for the second mixer at a tenth of the VCO frequency, i.e. 140 MHz (175,52 - 140 = 35,42 MHz) again goes out for a filtering-round (through a SAW filter) and back in for a mixdown with 31,11 MHz (actually 280 / 9 MHz) producing a 4,309 MHz signal which is then sampled at 5,714 MHz (actually 40 / 7 MHz) producing 1,405 MHz carrier frequency in the 5,714 Msamples/s 2-bit datastream. The Meinberg trick can be done by simply put one frontend chip in the antenna and another in the receiver. Both is fed the same 10 MHz clock but you pick up the signal after the 2nd mixdown stage and transport that IF over the cable and then toss in it at that place in the receivers frontend. The AGC there will automatically compensate for cable damping which happends around the 3rd mixdown. The HF part of the frontend in the receiver it just kept as dead functionality. Same goes for the 3rd stage in the antenna. Fairly clean and simple. Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -------------------------------------------------------- Genetix Limited - Queensway, New Milton, Hampshire, BH25 5NN Registered in England No. 2660050 www.genetix.com Any opinions expressed in this email are those of the individual and not necessarily Genetix Ltd (Genetix) or any company associated with it. This email and any files transmitted with it are confidential and solely for the use of the intended recipient. If you are not the intended recipient or the person responsible for delivering to the intended recipient, be advised that you have received this email in error and that any use is strictly prohibited. If you have received this email in error please notify Genetix by telephone on +44 (0)1425 624600. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. This mail and any attachments have been scanned for viruses prior to leaving Genetix network. Genetix will not be liable for direct, special, indirect or consequential damages as a result of any virus being passed on, or arising from alteration of the contents of this message by a third party. -------------------------------------------------------- _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.