[CQ-Contest] ICOM-amp. keying

[MikeR]

Clive -
My PRO II manual says the relay can handle 16V @ 2 amps. I saw a lot of stuff on the web 
indicating that was a misprint, and the specs were much lower. I use a buffer. It's cheap 
insurance. Take a look here: http://www.qsl.net/icom/auxrelay.html
Adam is a recognised ICOM guru.
73, Mike NF4L
Clive Whelan wrote:
> Hi list
> 
> Slightly off topic, but not presently subscribed to an ICOM reflector, so
> please excuse.
> 
> I recently acquired an ICOM7400 ( =746PRO in U.S.A.), ostensibly for VHF,
> but it seems to quite a nice HF rig, even for contest work. So I thought I
> would install it as the left(=RUN) radio in the SO2R set up, to give it a
> real work-out. So far so good, but I have a potential problem with
> interconnection to my Alpha 78. The spec on the ICOM amp. switching is max.
> 16v at 500mA, an enormous current, but the Alpha measures 20 volts in key
> up, which is above spec. of course.
> 
> I have previously switched the Alpha from both an FT1000MP and a TS870 with
> no trouble, but don't want to take any chances. So I wonder, has anyone
> already done what I am proposing, and found it to be safe, or otherwise? I
> wonder what the 756PRO spec. is in this regard, of which there must be a lot
> in use. Info. appreciated.
> 
> 
> 73
> 
> 
> Clive
> GW3NJW
> 
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