Paul,
Spence did some rough testing, but it was designed to be simple, cheap, robust, and easily duplicated rather than cutting edge. I did some A/B testing with an ARR preamp on SO-50 and FO-29. Both made significant improvement, and I did not hear any practical difference. That would not likely be the case if we were talking about P3 bird at apogee.
73s,
Alan WA4SCA
<-----Original Message----- <From: amsat-bb-bounces@amsat.org <[mailto:amsat-bb-bounces@amsat.org] On Behalf Of Paul Stoetzer <Sent: Thursday, October 03, 2013 5:40 AM <To: amsat-bb@amsat.org <Subject: [amsat-bb] AMSAT Broadband Preamp Specs < <I was curious - has anyone measured the noise figure and gain of the <AMSAT Broadband Preamp? < <73, < <Paul Stoetzer, N8HM <Washington, DC <_______________________________________________ <Sent via AMSAT-BB@amsat.org. Opinions expressed are those of <the author. <Not an AMSAT-NA member? Join now to support the amateur <satellite program! <Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb <