[amsat-bb] Re: SSB Preamp
Alan P. Biddle
APBIDDLE at UNITED.NET
Tue Aug 12 04:29:38 PDT 2008
Also, most TX amplifiers have a series capacitor on the input, which will
also block the DC power. With the TX amp switched off/out, there is usually
a DC path, but check the schematic.
Not sure what you mean by "recognized a preamp" (I don't have a 910), but if
you have a lightning arrestor in between the rig and the preamp, they
usually block DC from passing. Mine does, so I had to power it with an
external cable (which, now that I think of it, kind of defeats the purpose
of the lightning arrestor...!).
> Date: Mon, 11 Aug 2008 16:39:56 -0400
> From: roi at optonline.net
> To: AMSAT-BB at amsat.org
> Subject: [amsat-bb] SSB Preamp
> Is anyone using a SSB SP-7000 preamp and an Icom 910H powered via direct
> feed from the coax. I am not able to turn the preamp on with this method,
> set the menu for the preamp and the front panel; it recognizes a preamp
> it's not working, any ideas?
> 73 Peter
> Sent via AMSAT-BB at 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
Your PC, mobile phone, and online services work together like never before.
Sent via AMSAT-BB at 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
More information about the AMSAT-BB