Empathy List Archives

BC

Brooke Clarke

Mon, Mar 10, 2008 10:31 PM

Hi Randy:

Do you know that one of the receivers causes a problem for the other one?

It may be that a passive splitter is all you need, like:
http://www.prc68.com/I/4GPS.shtml
To get more isolation you could pad between the splitter and receivers since
most receivers operate over a large dynamic range.

If you think you will want to run a number of receivers you might consider a
repeater. It consists of a high gain amp (about 30 to 50 dB) followed by a
passive antenna mounted on the ceiling pointing down. I found that setting the
receivers side by side where they were toughing each other caused problems, but
6 inches of separation was all that was needed for isolation.

Have Fun,

Brooke Clarke
http://www.prc68.com/P/Prod.html Products I make and sell
http://www.prc68.com/Alpha.shtml All my web pages listed based on html name
http://www.PRC68.com
http://www.precisionclock.com
http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Web Cam

randy warner wrote:

Guys,

I need to come up with a 0db little splitter to route 1 antenna into 2 GPS
receivers. To keep the isolation up I want to use an active splitter instead
of a passive one. I suppose I could use a passive splitter followed by two
LNA's (one to each receiver), but I would then have to add a lot of
attenuation to knock the signal back down. I suppose it would work, but the
noise factor sure wouldn't be optimum.

Does anyone out there know of a single/dual IC solution to this? Everything
I have found LNA wise is in the 10-30 dB range. Note that this will be a
board mounted circuit and I don't have to worry about connectors, etc. I'm
hoping to find a little solution that I can cover with one of Laird's
standard shield cans.

Thanks,

Randy Warner

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 Randy: Do you know that one of the receivers causes a problem for the other one? It may be that a passive splitter is all you need, like: http://www.prc68.com/I/4GPS.shtml To get more isolation you could pad between the splitter and receivers since most receivers operate over a large dynamic range. If you think you will want to run a number of receivers you might consider a repeater. It consists of a high gain amp (about 30 to 50 dB) followed by a passive antenna mounted on the ceiling pointing down. I found that setting the receivers side by side where they were toughing each other caused problems, but 6 inches of separation was all that was needed for isolation. Have Fun, Brooke Clarke http://www.prc68.com/P/Prod.html Products I make and sell http://www.prc68.com/Alpha.shtml All my web pages listed based on html name http://www.PRC68.com http://www.precisionclock.com http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Web Cam randy warner wrote: > Guys, > > I need to come up with a 0db little splitter to route 1 antenna into 2 GPS > receivers. To keep the isolation up I want to use an active splitter instead > of a passive one. I suppose I could use a passive splitter followed by two > LNA's (one to each receiver), but I would then have to add a lot of > attenuation to knock the signal back down. I suppose it would work, but the > noise factor sure wouldn't be optimum. > > Does anyone out there know of a single/dual IC solution to this? Everything > I have found LNA wise is in the 10-30 dB range. Note that this will be a > board mounted circuit and I don't have to worry about connectors, etc. I'm > hoping to find a little solution that I can cover with one of Laird's > standard shield cans. > > Thanks, > > Randy Warner > > > > _______________________________________________ > 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. >

RW

randy warner

Mon, Mar 10, 2008 11:19 PM

Bruce,

I'm afraid I have to agree. I just can't seem to find an "easy" way to do
this. I suppose I could cut one of my HP splitters apart, but that would be
rather ugly and costly. ;-)

Randy

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Bruce Griffiths
Sent: Monday, March 10, 2008 3:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Component level 1:2 splitter

randy warner wrote:

Guys,

I need to come up with a 0db little splitter to route 1 antenna into 2 GPS
receivers. To keep the isolation up I want to use an active splitter

instead

of a passive one. I suppose I could use a passive splitter followed by two
LNA's (one to each receiver), but I would then have to add a lot of
attenuation to knock the signal back down. I suppose it would work, but

the

noise factor sure wouldn't be optimum.

Does anyone out there know of a single/dual IC solution to this?

Everything

I have found LNA wise is in the 10-30 dB range. Note that this will be a
board mounted circuit and I don't have to worry about connectors, etc. I'm
hoping to find a little solution that I can cover with one of Laird's
standard shield cans.

Thanks,

Randy Warner

Randy

The only solution that springs to mind is to amplify split/attenuate
amplify attenuate.
If one uses low noise amplifiers and maintains a net gain before the
output attenuator then the noise figure can be kept reasonably low.
This requires an input amplifier followed by a splitter and possibly an
attenuator followed by an amplifier with an output attenuator for each
of the 2 splitter outputs.
The output attenuators will also increase the isolation by a few dB.

Bruce

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Bruce, I'm afraid I have to agree. I just can't seem to find an "easy" way to do this. I suppose I could cut one of my HP splitters apart, but that would be rather ugly and costly. ;-) Randy -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Bruce Griffiths Sent: Monday, March 10, 2008 3:02 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Component level 1:2 splitter randy warner wrote: > Guys, > > I need to come up with a 0db little splitter to route 1 antenna into 2 GPS > receivers. To keep the isolation up I want to use an active splitter instead > of a passive one. I suppose I could use a passive splitter followed by two > LNA's (one to each receiver), but I would then have to add a lot of > attenuation to knock the signal back down. I suppose it would work, but the > noise factor sure wouldn't be optimum. > > Does anyone out there know of a single/dual IC solution to this? Everything > I have found LNA wise is in the 10-30 dB range. Note that this will be a > board mounted circuit and I don't have to worry about connectors, etc. I'm > hoping to find a little solution that I can cover with one of Laird's > standard shield cans. > > Thanks, > > Randy Warner > Randy The only solution that springs to mind is to amplify split/attenuate amplify attenuate. If one uses low noise amplifiers and maintains a net gain before the output attenuator then the noise figure can be kept reasonably low. This requires an input amplifier followed by a splitter and possibly an attenuator followed by an amplifier with an output attenuator for each of the 2 splitter outputs. The output attenuators will also increase the isolation by a few dB. Bruce _______________________________________________ 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.

SW

Stan, W1LE

Mon, Mar 10, 2008 11:25 PM

Hello Randy,

You may find that you have excess gain from the existing LNA/Antenna to
the GPS RX.
Using a passive splitter, 1/2 to both outputs, will not degrade performance.

If you do not have excess gain, a cost effective approach is a ebay
splitter by Symmetricom.
Last one I got was 30$

Stan, W1LE FN41sr Cape Cod

randy warner wrote:

Guys,

I need to come up with a 0db little splitter to route 1 antenna into 2 GPS
receivers. To keep the isolation up I want to use an active splitter instead
of a passive one. I suppose I could use a passive splitter followed by two
LNA's (one to each receiver), but I would then have to add a lot of
attenuation to knock the signal back down. I suppose it would work, but the
noise factor sure wouldn't be optimum.

Does anyone out there know of a single/dual IC solution to this? Everything
I have found LNA wise is in the 10-30 dB range. Note that this will be a
board mounted circuit and I don't have to worry about connectors, etc. I'm
hoping to find a little solution that I can cover with one of Laird's
standard shield cans.

Thanks,

Randy Warner

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.

Hello Randy, You may find that you have excess gain from the existing LNA/Antenna to the GPS RX. Using a passive splitter, 1/2 to both outputs, will not degrade performance. If you do not have excess gain, a cost effective approach is a ebay splitter by Symmetricom. Last one I got was 30$ Stan, W1LE FN41sr Cape Cod randy warner wrote: > Guys, > > I need to come up with a 0db little splitter to route 1 antenna into 2 GPS > receivers. To keep the isolation up I want to use an active splitter instead > of a passive one. I suppose I could use a passive splitter followed by two > LNA's (one to each receiver), but I would then have to add a lot of > attenuation to knock the signal back down. I suppose it would work, but the > noise factor sure wouldn't be optimum. > > Does anyone out there know of a single/dual IC solution to this? Everything > I have found LNA wise is in the 10-30 dB range. Note that this will be a > board mounted circuit and I don't have to worry about connectors, etc. I'm > hoping to find a little solution that I can cover with one of Laird's > standard shield cans. > > Thanks, > > Randy Warner > > > > _______________________________________________ > 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. > >

RW

randy warner

Mon, Mar 10, 2008 11:32 PM

Dan,

Thanks for the info. It looks like Mini-Circuits little BP2G IC should work
well enough. 3dB of loss SHOULDN'T bother anything, the Novatel L1 CP
receivers we use here are almost deaf....... So long as the isolation stays
up in the high 20's and I put buffers on all ports I should be OK.

Randy

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Dan Rae
Sent: Monday, March 10, 2008 3:23 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Component level 1:2 splitter

randy warner wrote:

Guys,

I need to come up with a 0db little splitter to route 1 antenna into 2 GPS
receivers. To keep the isolation up I want to use an active splitter

instead

of a passive one.

Randy,
For a long time I used a passive splitter made from a swap meet $1 MCL
(minicircuits) 1 to 2 GHz splitter / combiner. Isolation of these is
good, around 30 dB, and the extra 3 dB loss will not be noticed in the
majority of cases. This one had SMAs all round and DC continuity
through from the A and B ports to the Common. I blocked one path to DC
with a 100 pF SM capacitor. If you need the Rx connected to the blocked
path to think it is feeding an antenna a series R and L combination with
a 220 Ohm R will fool the Rx in question.

I really would not think you will need any gain. For more than two
receivers though I would recommend the hp / symmetricom (?) 4 and 8 way
active splitters that can be found on eBay. If you did want gain there
are a lot of MMICs that will do the job.

I've given it away a while back so can't give you any further details,
but for two receivers this worked well for me. For my growing collection
of gps units here I now need more than two...

Dan

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and follow the instructions there.

Dan, Thanks for the info. It looks like Mini-Circuits little BP2G IC should work well enough. 3dB of loss SHOULDN'T bother anything, the Novatel L1 CP receivers we use here are almost deaf....... So long as the isolation stays up in the high 20's and I put buffers on all ports I should be OK. Randy -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Dan Rae Sent: Monday, March 10, 2008 3:23 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Component level 1:2 splitter randy warner wrote: >Guys, > >I need to come up with a 0db little splitter to route 1 antenna into 2 GPS >receivers. To keep the isolation up I want to use an active splitter instead >of a passive one. > Randy, For a long time I used a passive splitter made from a swap meet $1 MCL (minicircuits) 1 to 2 GHz splitter / combiner. Isolation of these is good, around 30 dB, and the extra 3 dB loss will not be noticed in the majority of cases. This one had SMAs all round and DC continuity through from the A and B ports to the Common. I blocked one path to DC with a 100 pF SM capacitor. If you need the Rx connected to the blocked path to think it is feeding an antenna a series R and L combination with a 220 Ohm R will fool the Rx in question. I really would not think you will need any gain. For more than two receivers though I would recommend the hp / symmetricom (?) 4 and 8 way active splitters that can be found on eBay. If you did want gain there are a lot of MMICs that will do the job. I've given it away a while back so can't give you any further details, but for two receivers this worked well for me. For my growing collection of gps units here I now need more than two... Dan _______________________________________________ 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.

UB

Ulrich Bangert

Tue, Mar 11, 2008 6:49 AM

Randy,

a splitter for two GPS receivers is a bit different from a normal power
splitter in that both receivers should "see" 50 Ohms impedance @ RF but
abt. some hundred Ohms @ dc. That is because each receiver will try to
measure the (active) antenna's dc current to find out whether the
attached antenna is working or not. They will react to either a to low
or a too high dc impedance with an "short circuit" or an "open loop"
condition that may inhibit them from work.

If you supply your mail address I can send you a photograph of a diy
passive splitter for two GPS receivers that works pretty well despite
the fact that it looks not really like rf equipment. It is easy to make
from parts out of the junk box.

Best regards
Ulrich Bangert, DF6JB

-----Ursprungliche Nachricht-----
Von: time-nuts-bounces@febo.com
[mailto:time-nuts-bounces@febo.com] Im Auftrag von randy warner
Gesendet: Montag, 10. Marz 2008 22:03
An: 'Discussion of precise time and frequency measurement'
Betreff: [time-nuts] Component level 1:2 splitter

Guys,

I need to come up with a 0db little splitter to route 1
antenna into 2 GPS receivers. To keep the isolation up I want
to use an active splitter instead of a passive one. I suppose
I could use a passive splitter followed by two LNA's (one to
each receiver), but I would then have to add a lot of
attenuation to knock the signal back down. I suppose it would
work, but the noise factor sure wouldn't be optimum.

Does anyone out there know of a single/dual IC solution to
this? Everything I have found LNA wise is in the 10-30 dB
range. Note that this will be a board mounted circuit and I
don't have to worry about connectors, etc. I'm hoping to find
a little solution that I can cover with one of Laird's
standard shield cans.

Thanks,

Randy Warner

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.

Randy, a splitter for two GPS receivers is a bit different from a normal power splitter in that both receivers should "see" 50 Ohms impedance @ RF but abt. some hundred Ohms @ dc. That is because each receiver will try to measure the (active) antenna's dc current to find out whether the attached antenna is working or not. They will react to either a to low or a too high dc impedance with an "short circuit" or an "open loop" condition that may inhibit them from work. If you supply your mail address I can send you a photograph of a diy passive splitter for two GPS receivers that works pretty well despite the fact that it looks not really like rf equipment. It is easy to make from parts out of the junk box. Best regards Ulrich Bangert, DF6JB > -----Ursprungliche Nachricht----- > Von: time-nuts-bounces@febo.com > [mailto:time-nuts-bounces@febo.com] Im Auftrag von randy warner > Gesendet: Montag, 10. Marz 2008 22:03 > An: 'Discussion of precise time and frequency measurement' > Betreff: [time-nuts] Component level 1:2 splitter > > > Guys, > > I need to come up with a 0db little splitter to route 1 > antenna into 2 GPS receivers. To keep the isolation up I want > to use an active splitter instead of a passive one. I suppose > I could use a passive splitter followed by two LNA's (one to > each receiver), but I would then have to add a lot of > attenuation to knock the signal back down. I suppose it would > work, but the noise factor sure wouldn't be optimum. > > Does anyone out there know of a single/dual IC solution to > this? Everything I have found LNA wise is in the 10-30 dB > range. Note that this will be a board mounted circuit and I > don't have to worry about connectors, etc. I'm hoping to find > a little solution that I can cover with one of Laird's > standard shield cans. > > Thanks, > > Randy Warner > > > > _______________________________________________ > 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

Tue, Mar 11, 2008 12:39 PM

Whatever route you go down, remember you need to get DC to the antenna from
one of the receivers, and block DC to the other.

Rob K

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of randy warner
Sent: 10 March 2008 21:03
To: 'Discussion of precise time and frequency measurement'
Subject: [time-nuts] Component level 1:2 splitter

Guys,

I need to come up with a 0db little splitter to route 1 antenna into 2 GPS
receivers. To keep the isolation up I want to use an active splitter instead
of a passive one. I suppose I could use a passive splitter followed by two
LNA's (one to each receiver), but I would then have to add a lot of
attenuation to knock the signal back down. I suppose it would work, but the
noise factor sure wouldn't be optimum.

Does anyone out there know of a single/dual IC solution to this? Everything
I have found LNA wise is in the 10-30 dB range. Note that this will be a
board mounted circuit and I don't have to worry about connectors, etc. I'm
hoping to find a little solution that I can cover with one of Laird's
standard shield cans.

Thanks,

Randy Warner

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.

Whatever route you go down, remember you need to get DC to the antenna from one of the receivers, and block DC to the other. Rob K -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of randy warner Sent: 10 March 2008 21:03 To: 'Discussion of precise time and frequency measurement' Subject: [time-nuts] Component level 1:2 splitter Guys, I need to come up with a 0db little splitter to route 1 antenna into 2 GPS receivers. To keep the isolation up I want to use an active splitter instead of a passive one. I suppose I could use a passive splitter followed by two LNA's (one to each receiver), but I would then have to add a lot of attenuation to knock the signal back down. I suppose it would work, but the noise factor sure wouldn't be optimum. Does anyone out there know of a single/dual IC solution to this? Everything I have found LNA wise is in the 10-30 dB range. Note that this will be a board mounted circuit and I don't have to worry about connectors, etc. I'm hoping to find a little solution that I can cover with one of Laird's standard shield cans. Thanks, Randy Warner _______________________________________________ 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.

BJ

Bill Janssen

Fri, Apr 4, 2008 3:55 PM

I was trying to get TAC32 to talk to my Z3801A, and no luck. I have
HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at
19200,7 bits and odd parity. Incidentally I modified the Z3801A to be
RS232, if that makes a difference

How do I convince TAC32 to connect to my Z3801A

Any help appreciated
Bill K7NOM

I was trying to get TAC32 to talk to my Z3801A, and no luck. I have HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at 19200,7 bits and odd parity. Incidentally I modified the Z3801A to be RS232, if that makes a difference How do I convince TAC32 to connect to my Z3801A Any help appreciated Bill K7NOM

JA

John Ackermann N8UR

Fri, Apr 4, 2008 5:02 PM

The Z3801A doesn't talk native Motorola -- it has its own set of
commands based on the SCPI protocol. So I don't think you'll have any
luck using the Motorola-based programs to talk to it.

John

Bill Janssen wrote:

I was trying to get TAC32 to talk to my Z3801A, and no luck. I have
HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at
19200,7 bits and odd parity. Incidentally I modified the Z3801A to be
RS232, if that makes a difference

How do I convince TAC32 to connect to my Z3801A

Any help appreciated
Bill K7NOM

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 Z3801A doesn't talk native Motorola -- it has its own set of commands based on the SCPI protocol. So I don't think you'll have any luck using the Motorola-based programs to talk to it. John ---- Bill Janssen wrote: > I was trying to get TAC32 to talk to my Z3801A, and no luck. I have > HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at > 19200,7 bits and odd parity. Incidentally I modified the Z3801A to be > RS232, if that makes a difference > > How do I convince TAC32 to connect to my Z3801A > > Any help appreciated > Bill K7NOM > > > _______________________________________________ > 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

Fri, Apr 4, 2008 5:07 PM

From: John Ackermann N8UR jra@febo.com
Subject: Re: [time-nuts] TAC32 & Z3801A
Date: Fri, 04 Apr 2008 13:02:40 -0400
Message-ID: 47F65F30.4010008@febo.com

The Z3801A doesn't talk native Motorola -- it has its own set of
commands based on the SCPI protocol. So I don't think you'll have any
luck using the Motorola-based programs to talk to it.

There is a receive only hack, which listens to the Tx of the reciever.

The Z3801A commands is very different from that of the Motorola receivers.

Cheers,
Magnus

From: John Ackermann N8UR <jra@febo.com> Subject: Re: [time-nuts] TAC32 & Z3801A Date: Fri, 04 Apr 2008 13:02:40 -0400 Message-ID: <47F65F30.4010008@febo.com> > The Z3801A doesn't talk native Motorola -- it has its own set of > commands based on the SCPI protocol. So I don't think you'll have any > luck using the Motorola-based programs to talk to it. There is a receive only hack, which listens to the Tx of the reciever. The Z3801A commands is very different from that of the Motorola receivers. Cheers, Magnus

RH

Rick Hambly (W2GPS)

Fri, Apr 4, 2008 6:10 PM

John,

If I had a Z3801A I might be inclined to add support for it to Tac32 but I
do not have one.

Rick
W2GPS
AMSAT LM2232

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of John Ackermann N8UR
Sent: Friday, April 04, 2008 1:03 PM
To: billj@ieee.org; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TAC32 & Z3801A

The Z3801A doesn't talk native Motorola -- it has its own set of
commands based on the SCPI protocol. So I don't think you'll have any
luck using the Motorola-based programs to talk to it.

John

Bill Janssen wrote:

I was trying to get TAC32 to talk to my Z3801A, and no luck. I have
HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at
19200,7 bits and odd parity. Incidentally I modified the Z3801A to be
RS232, if that makes a difference

How do I convince TAC32 to connect to my Z3801A

Any help appreciated
Bill K7NOM

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
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and follow the instructions there.

John, If I had a Z3801A I might be inclined to add support for it to Tac32 but I do not have one. Rick W2GPS AMSAT LM2232 -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of John Ackermann N8UR Sent: Friday, April 04, 2008 1:03 PM To: billj@ieee.org; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] TAC32 & Z3801A The Z3801A doesn't talk native Motorola -- it has its own set of commands based on the SCPI protocol. So I don't think you'll have any luck using the Motorola-based programs to talk to it. John ---- Bill Janssen wrote: > I was trying to get TAC32 to talk to my Z3801A, and no luck. I have > HP SATSTAT working OK but not TAC32 (or SynTac). SATSTAT uses COM 1, at > 19200,7 bits and odd parity. Incidentally I modified the Z3801A to be > RS232, if that makes a difference > > How do I convince TAC32 to connect to my Z3801A > > Any help appreciated > Bill K7NOM > > > _______________________________________________ > 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@lists.febo.com

Re: [time-nuts] Racal-Dana 1992 switches

John

John