[ICOM] Amp Keying Question Again

[Adam Farson]

Hi Joe,

The amplifier keying relay in an Icom transceiver cannot be disabled, but
you may be able to connect ACC(2) Pin 3 (SEND) to the AmpKeyer input. The
SEND line is bi-directional; it goes low on transmit, and grounding it
externally keys the transceiver. The relay will still operate, but keying
from the SEND line eliminates the relay's 1 mS latency.

Cheers for now, 73,
Adam VA7OJ/AB4OJ
 

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of jduerbusch at charter.net
Sent: 20 June 2005 10:19
To: icom at mailman.qth.net; ic756pro3 at yahoogroups.com
Subject: [ICOM] Amp Keying Question Again

I got a IC-756PRO3 at Dayton and little by little I am getting all hooked up
to the station.
Yesterday my daughters gave me a 'AmpKeyer' device for FatherDay. (I wonder
how they knew?).
This box will go between the PRO3 and my Drake L-7.
Here is my questions:
1.  There are two places to hookup the connection on the PRO3, either the
RCA Jack or the ACC 1 connector.  Is one better than the other?  Can I take
the 12 volts off the ACC 1 to run the interface?

2.  Since I am keying the Amp with a solid state device in side the
AmpKeyer, is there anyway to bypass the relay in the PRO3?  On my TS-850S, I
was able to turn off the internal relay and use the +12 volts on xmit to
drive a transistor circuit.  BTW the voltage on the Drake is 24 Volts.

Other than that, the PRO3 seems to be working FB for me.  I really like the
digital display for the S-meter with the mini-scope above.

Joe K0BX
STL MO


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