FYI for operators using the IC-970 radio. I blew my AG-25 preamp once as a result of switching the satellite mode knob while PTT was still engaged. I never tried to duplicate this action of course, but it seems the radio logic got confused during the change and the sequencer did not kill the TX power.
> > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 23 Apr 2009 20:45:40 -0600 > From: "Yokshs" <[email protected]> > Subject: [amsat-bb] AG-35 smoke test > To: "Amsat BB" <[email protected]> > Message-ID: <0cd166ce3bf94d2b91d05ecd6d2cc...@main> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > > > Luc, > > Thanks for the reply. > > Did you have to remove the relay to replace the FET? Just curious. I've got > my AG-35 down off the tower and on the bench now. The FET is so close > to one of the relays, I'm pretty sure it'll have to be removed to replace > the FET.. Any suggestions? > > Thanks, > > Kyle > K0KN > > > --- Original Message --- > > I fried my UHF one too...I order a couple from ICOM. With my very limited > electronics building skills i cut the dead one leaving as much > legs as possible and i resolder the replacement over the cut legs. Not > elegant but quick and effective. Is this is achieving the same > overall previous gain figures? that i don't know but it works. > > I have another one to replace in a different type of preamp but the FET is > below a lot of other components and he's flat mounted (No legs) > i don't come up with a solution with this one? > > > "-" > > > Luc Leblanc VE2DWE > Skype VE2DWE > www.qsl.net/ve2dwe > WAC BASIC CW PHONE SATELLITE > > > > > > -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Use only Genuine Interocitor Parts" Tom Servo ;-P _______________________________________________ Sent via [email protected]. 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
