[amsat-bb] Re: Icom 910H aux switching

Scott Townley nx7u@arrl.net
Sat Sep 2 13:07:46 PDT 2006

My 2 pence worth is that the best way to do these things is with an 
external sequencer.
The ARRL Handbook has a simple one, plus you can get them ready-made from 
DB6NT, Advanced Receiver Research, and I think W1GHZ sells some on eBay 
from time to time.
The idea:  you PTT the sequencer (footswitch or equivalent) and the 
sequencer unkeys the preamp, keys the amp, and then keys the rig, in that 
order.  That way everything is where it should be when you speak/key the rig.
If you have the rig put everything else in TX then the rig can be 
transmitting before/as the relays are switching over, which is a guaranteed 
way of replacing your preamp transistors and/or relays someday.
That also implies no VOX with preamps.

At 04:23 2006-09-02, Keith Le Boutillier wrote:
>I wish to switch my amp and pre amps when using the Icom 910H
>Is their any way of having a switching line the changes when the rig goes
>into TX
>I have read the manual and checked the sockets on the back of the rig but
>can't see an aux switching line or voltage change or anything that I could
>Dose anyone have any advice or achieved what I wish to do
>73 Keith GU6EFB
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