[aprssig] Return loss bridge

[Bob Martinson]

See: http://minicircuits.com/products/dc_coax_6_30.html

Take your pick.

73, Bob, K1REM



-----Original Message-----
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org]On
Behalf Of Scott Miller
Sent: Tuesday, September 08, 2009 3:10 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] Return loss bridge


Yikes, that's small.  What I really need is a fully built box,
preferably with BNCs.  I just don't have time to spend on building test
equipment right now.

I did take about 3 minutes to wire up a serial cable for the 8920 and I
can now print test results directly to the PC.  Wish I'd thought to do
that a long time ago.

Scott
N1VG

Bob Donnell wrote:
> Hi Scott,
>
> Minicircuits has a 10 dB coupler with some decent directivity
>
> http://minicircuits.com/pdfs/ADC-10-4.pdf
>
> The first trick will be to get it hooked up with connectors - but that was
> with a very quick search, and it covers a lot wider bandwidth than you
asked
> for.
>
> 73, Bob, KD7NM
>
> -----Original Message-----
> From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
> Of Scott Miller
> Sent: Tuesday, September 08, 2009 10:55 AM
> To: TAPR APRS Mailing List
> Subject: [aprssig] Return loss bridge
>
> My HP 8920A has the tracking generator and spectrum analyzer options, so
if
> I can find a suitable return loss bridge or directional coupler I can use
it
> to plot VSWR for antenna testing.  I've found lots of plans out there, but
> not many affordable assembled units.  Anyone know where I can get one for
a
> reasonable price that covers at least 140-160 Mhz?
>
> On a related note, I've got a batch of 2 meter 'Hershey kiss' type
magmounts
> on the way in the next month or so, and they're coming factory-tuned for
> 144.39 Mhz.  The factory's test report looks good, but it'd be nice to be
> able to reproduce the results here.
>
> 73,
>
> Scott
> N1VG
>
>
>
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