Al,
You might want to take a look at www.telepostinc.com/. They don't get much
more accurate than Larry's LP-100A.
Regards, Joel
Joel R. Hallas, W1ZR
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of al sirois
Sent: Sunday, December 13, 2009 7:05 AM
To: geraldj@weather.net; 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] Colliins SWR Bridge.....I'm also interested in EWR-PWR
instrumentation.
0700 EST
13 December 2009
Good morning, all:
I'm not overly impressed with the commonly accepted Bird meters in the ham
community. I am looking for something much better, for sure. Guess I should
look into this Collins Bridge 312B-4 or go to calibrated occiliscopes.
73
Al Sirois
East Boothbay, ME
N1mhc@arrl.net
==============
-----Original Message-----
From: geraldj [mailto:geraldj@storm.weather.net]
Sent: Sunday, December 13, 2009 2:16 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Colliins SWR Bridge
---------- Original Message -----------
From: ac9s@mchsi.com
To: tentec@contesting.com
Sent: Sat, 12 Dec 2009 18:26:50 -0600 (CST)
Subject: [TenTec] Colliins SWR Bridge
> Jerry,
>
> You wrote: "Many a ham SWR meter is a very rough approximation of SWR and
even
> when it shows matched, the impedance and reactance may be a ways from 50
ohms
> resistive. Birds aren't bad, Collins wattmeters I think have a much better
> design. But then I'm biased, I have one of their reject designs
> (I worked with the department that did ham gear designs in 1963) and its
> plenty good but not good enough for their specifications. There's a lot
more
> shielding in their better design to control stray couplings that would
make
> the readings wrong."
> > >
>
> Does the 312B-4 include the better bridge design?
Yes.
>
> Thanks --
>
> Keith
> AC9S
73, Jerry, K0CQ
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