Ken_ke2n wrote:
The KEY OUT switch (FET) is from the inverted state of the main receive
control line.
So your amplifiers and transverters (etc) are keyed up whenever you are
**not receiving**
- which is not quite the same thing as transmitting (!)
So when you program the keyer messages it turns on this output.
When you load a new MCU program in, it will key up your equipment for 3
minutes continuously (I will not do that one again !)
Anyway, I think a wiring change is required for this one. It would be easy
to change the logic to be:
not_receive AND transmit
I would be very careful about this, because of the need for the key out
to be activated a few ms. before RF appears and to stay active until
after the RF is gone. This is necessary to prevent hot-switching of
amplifier relays which at best will create key clicks and at worst will
destroy the relays.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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