[Wswss] IC-471A Hard Key Setup

[Tom Carney]

Bill

Almost all ICOM rigs have a signal (hsend?) that goes from 8v (no transmit)
to 0 (during transmit) that brought out on one of the connectors.  A fairly
simple circuit will allow you to switch the common brick amp using this
signal.

I build one for an IC-290 and a Mirage amp several years ago.  I'm away from
home right now but will send you the details when I get home on Monday.
Seems like it was just a couple of small signal transistors and a couple of
resistors.  I put mine in an old plastic 35mm film can.

73  Tom  K6EU

----- Original Message -----
From: "Bill Jenkins" <w6jex at dm-tech.net>
To: <wswss at mailman.qth.net>
Sent: Saturday, February 12, 2005 2:30 PM
Subject: [Wswss] IC-471A Hard Key Setup


> Hi all,
> WB6JNX in Chico has an IC-471A he would like to hardkey an amplifier with.
>
> The owners manual makes no mention of this function.
>
> Can a solid state amplifer be hard keyed wirh this rig ?
>
> Any help appreciated.
>
> Thanks,
>
> Bill W6JEX
> _______________________________________________