There is no 24db gain 432 preamp from ARR-They list as a 1 db difference. You should go for the gasfet as the noise figure will be the difference. I used one on my 821H for many years-no probs encountered. 73, Dee, NB2F
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mark L. Hammond Sent: Wednesday, March 09, 2011 1:28 PM To: Paul Delaney - K6HR Cc: amsat-bb@amsat.org Subject: [amsat-bb] Re: IC-821H Frontend Overload?
It's all about noise figure....I say get the AR2 SP432VDG 24db! If the front end is "too hot" you can use crummy coax to attenuate the signal ;)
Does the 821H have a preamp that you could turn off if necessary? Probably won't be necessary, but just in case...
Mark N8MH
On Wed, Mar 9, 2011 at 1:11 PM, Paul Delaney - K6HR paul.hamradio@verizon.net wrote:
I'm setting up for satellite operation and considering the AR2 SP432VDG
24db preamp. A friend suggests this will likely overload the frontend of the radio (an 821H) The antennas are M2 eggbeaters. Would the SP432VDA 15db be a better choice?
Can anyone using these preamps give me some feedback on the 15db vs. 24db
preamps and which might be the best way to go considering the radio and antennas I have?
Paul Delaney paul.hamradio@verizon.net http://k6hr.dyndns.org:8080 _______________________________________________ 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
-- Mark L. Hammond [N8MH] _______________________________________________ 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