[ICOM] 756pro Amp Keying

k0bx at arrl.net k0bx at arrl.net
Mon Apr 30 09:11:54 EDT 2007


Adam wrote that you have welded the relay together and
that is what is shorting the send line.
You need to repair/replace the relay.

Someone else wrote:
It seems to me, based on my experience, that two
options exist: Dan 
can
> >replace the reed relay on the amp keying line or he
can accept its 
demise
> >and use the output through one of the accessory
jacks (a DIN jack).

Once you have the relay or short unshorted, I think
keying the amp from the ACC2 plug is the way to go.

I used pins 2 which is ground, and 3 which is SEND. 
That output go's to a device called an "AMPKEYER"
which then keys the amp.  There are many different
circuits you can use but using the ACC2 output to key
them works fine.  It is also faster than using the
relay in the PRO3.

I just wish there was someway to turnoff that keying
relay in the PRO3.  It is noisy and not needed.

Joe K0BX



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