bob and the boys...
the original ten tec amp accessory did provide a delay. There is (was) a small
trimmer on the pcb to set the time.
My replacement provides a way of adjusting the t/r delay time, too.
Mike, WB8VGE
“The trouble with quotes on the Internet is that you never know if they are
genuine”
—Abraham Lincoln
> On Mar 6, 2020, at 12:05 PM, Bob McGraw K4TAX <rmcgraw@blomand.net> wrote:
>
> Yes that is correct, the number I have is 80853. It allows the relay on
> that board to connect the coil to the T/R line and the other end of the coil
> to connect to +12VDC. There is a diode across the coil for back EMF. The
> relay contacts are connected to a RCA connector on the rear thus providing a
> closure when the T/R line is in transmit mode.
>
> I would comment......the Argosy does not provide any delay between key
> closure and RF output. This WILL cause hot switching of any amplifier being
> controlled by the T/R relay and subsequently the amplifier. Also the
> Argosy is always in full QSK mode thus the relays will operate with every key
> closure.
>
> One can use a reed relay or like to handle the switching for SSB as there is
> little likelihood when using manual PTT. For SSB VOX and CW, be assured
> that hot switching will take place. I am not aware of any method to
> delay the RF output after key closure.
>
> 73
>
> Bob, K4TAX
>
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