time-nuts@lists.febo.com

Discussion of precise time and frequency measurement

View all threads

10 MHz Distribution Amp

RW
Richard W. Solomon
Thu, Nov 12, 2009 6:20 PM

A friend of mine is looking for an inexpensive way to distribute
his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while
very nice, is a tad on the pricey side when you add in the enclosure.

Any ideas what he could use that is not so expensive ?

Thanks, Dick, W1KSZ

A friend of mine is looking for an inexpensive way to distribute his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while very nice, is a tad on the pricey side when you add in the enclosure. Any ideas what he could use that is not so expensive ? Thanks, Dick, W1KSZ
DS
David Smith
Thu, Nov 12, 2009 6:32 PM

Hi Dick,

Down East Microwave makes a 10 MHz distribution kit called the 10-4. I think it sell around $50. 1 input port and 4 output ports.

Dave W6TE
----- Original Message -----
From: Richard W. Solomonmailto:w1ksz@earthlink.net
To: time-nuts@febo.commailto:time-nuts@febo.com
Sent: Thursday, November 12, 2009 10:20 AM
Subject: [time-nuts] 10 MHz Distribution Amp

A friend of mine is looking for an inexpensive way to distribute
his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while
very nice, is a tad on the pricey side when you add in the enclosure.

Any ideas what he could use that is not so expensive ?

Thanks, Dick, W1KSZ


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

Hi Dick, Down East Microwave makes a 10 MHz distribution kit called the 10-4. I think it sell around $50. 1 input port and 4 output ports. Dave W6TE ----- Original Message ----- From: Richard W. Solomon<mailto:w1ksz@earthlink.net> To: time-nuts@febo.com<mailto:time-nuts@febo.com> Sent: Thursday, November 12, 2009 10:20 AM Subject: [time-nuts] 10 MHz Distribution Amp A friend of mine is looking for an inexpensive way to distribute his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while very nice, is a tad on the pricey side when you add in the enclosure. Any ideas what he could use that is not so expensive ? Thanks, Dick, W1KSZ _______________________________________________ time-nuts mailing list -- time-nuts@febo.com<mailto:time-nuts@febo.com> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> and follow the instructions there.
RA
Robert Atkinson
Thu, Nov 12, 2009 8:34 PM

Hi,
The cheap alternative is to use a video distribution amp. Even the cheap ones are reasonable. VGA distribution units can also be used, you get three channels.
 
Robert G8RPI.

--- On Thu, 12/11/09, Richard W. Solomon w1ksz@earthlink.net wrote:

From: Richard W. Solomon w1ksz@earthlink.net
Subject: [time-nuts] 10 MHz Distribution Amp
To: time-nuts@febo.com
Date: Thursday, 12 November, 2009, 18:20

A friend of mine is looking for an inexpensive way to distribute
his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while
very nice, is a tad on the pricey side when you add in the enclosure.

Any ideas what he could use that is not so expensive ?

Thanks, Dick, W1KSZ


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, The cheap alternative is to use a video distribution amp. Even the cheap ones are reasonable. VGA distribution units can also be used, you get three channels.   Robert G8RPI. --- On Thu, 12/11/09, Richard W. Solomon <w1ksz@earthlink.net> wrote: From: Richard W. Solomon <w1ksz@earthlink.net> Subject: [time-nuts] 10 MHz Distribution Amp To: time-nuts@febo.com Date: Thursday, 12 November, 2009, 18:20 A friend of mine is looking for an inexpensive way to distribute his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while very nice, is a tad on the pricey side when you add in the enclosure. Any ideas what he could use that is not so expensive ? Thanks, Dick, W1KSZ _______________________________________________ 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.
JM
John Miles
Thu, Nov 12, 2009 8:54 PM

Well, the cheap alternative is a simple CATV splitter, available off the
rack at Home Depot for $5-$10.  If you have enough 10 MHz drive, and if your
instruments will lock up reliably with the resulting attenuated output, then
you're all set.

Before I bought a 5087A, I was able to lock almost all of my HP and Tek gear
on a 4-port splitter fed by a Thunderbolt at +9 dBm.  The only exception was
my 5345A counter, but a $2 MAV-11 amplifier took care of that.

-- john, KE5FX

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com]On
Behalf Of Robert Atkinson
Sent: Thursday, November 12, 2009 12:35 PM
To: Richard W. Solomon; Discussion of precise time and frequency
measurement
Subject: Re: [time-nuts] 10 MHz Distribution Amp

Hi,
The cheap alternative is to use a video distribution amp. Even
the cheap ones are reasonable. VGA distribution units can also be
used, you get three channels.
 
Robert G8RPI.

--- On Thu, 12/11/09, Richard W. Solomon w1ksz@earthlink.net wrote:

From: Richard W. Solomon w1ksz@earthlink.net
Subject: [time-nuts] 10 MHz Distribution Amp
To: time-nuts@febo.com
Date: Thursday, 12 November, 2009, 18:20

A friend of mine is looking for an inexpensive way to distribute
his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while
very nice, is a tad on the pricey side when you add in the enclosure.

Any ideas what he could use that is not so expensive ?

Thanks, Dick, W1KSZ


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.

Well, the *cheap* alternative is a simple CATV splitter, available off the rack at Home Depot for $5-$10. If you have enough 10 MHz drive, and if your instruments will lock up reliably with the resulting attenuated output, then you're all set. Before I bought a 5087A, I was able to lock almost all of my HP and Tek gear on a 4-port splitter fed by a Thunderbolt at +9 dBm. The only exception was my 5345A counter, but a $2 MAV-11 amplifier took care of that. -- john, KE5FX > -----Original Message----- > From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com]On > Behalf Of Robert Atkinson > Sent: Thursday, November 12, 2009 12:35 PM > To: Richard W. Solomon; Discussion of precise time and frequency > measurement > Subject: Re: [time-nuts] 10 MHz Distribution Amp > > > Hi, > The cheap alternative is to use a video distribution amp. Even > the cheap ones are reasonable. VGA distribution units can also be > used, you get three channels. >   > Robert G8RPI. > > --- On Thu, 12/11/09, Richard W. Solomon <w1ksz@earthlink.net> wrote: > > > From: Richard W. Solomon <w1ksz@earthlink.net> > Subject: [time-nuts] 10 MHz Distribution Amp > To: time-nuts@febo.com > Date: Thursday, 12 November, 2009, 18:20 > > > A friend of mine is looking for an inexpensive way to distribute > his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while > very nice, is a tad on the pricey side when you add in the enclosure. > > Any ideas what he could use that is not so expensive ? > > Thanks, Dick, W1KSZ > > _______________________________________________ > 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. >
PS
paul swed
Thu, Nov 12, 2009 10:29 PM

I guess I like simple stupid and common.
If the parts are at radio shack... thats indeed common.
I use a IRF510 fet $1.99 at RS.
Bias it into the linear region and then use a passive R splitter. Roughly
10K to Vdd
Doesn't get much easier then that.
I also will put a tank circuit on the drain and tune it if I want to make a
square wave into a sine wave. Use caps to isolate dc...
By the way I do also use Grassvalley video DAs and other broadcast DAs with
the clamping turned off. They easily go to 10 MC. But they draw a bit of
power compared to the simple fet approach.
Regards
Paul

On Thu, Nov 12, 2009 at 1:20 PM, Richard W. Solomon w1ksz@earthlink.netwrote:

A friend of mine is looking for an inexpensive way to distribute
his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while
very nice, is a tad on the pricey side when you add in the enclosure.

Any ideas what he could use that is not so expensive ?

Thanks, Dick, W1KSZ


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.

I guess I like simple stupid and common. If the parts are at radio shack... thats indeed common. I use a IRF510 fet $1.99 at RS. Bias it into the linear region and then use a passive R splitter. Roughly 10K to Vdd Doesn't get much easier then that. I also will put a tank circuit on the drain and tune it if I want to make a square wave into a sine wave. Use caps to isolate dc... By the way I do also use Grassvalley video DAs and other broadcast DAs with the clamping turned off. They easily go to 10 MC. But they draw a bit of power compared to the simple fet approach. Regards Paul On Thu, Nov 12, 2009 at 1:20 PM, Richard W. Solomon <w1ksz@earthlink.net>wrote: > A friend of mine is looking for an inexpensive way to distribute > his 10 MHz T-Bolt signal to other instruments. The TAPR unit, while > very nice, is a tad on the pricey side when you add in the enclosure. > > Any ideas what he could use that is not so expensive ? > > Thanks, Dick, W1KSZ > > _______________________________________________ > 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. >