[aprssig] Return loss bridge

[Scott Miller]

Thanks, looks like just what I need!  Now to figure out which model... 
guess I'd better read the comm analyzer manual again and make sure I get 
the right thing.

73,

Scott
N1VG

Bob Martinson wrote:
> 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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>>
>>
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>>
> 
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