[Elecraft] K3 RE: Keying SB-200

Joel R. Hallas jrhallas at optonline.net
Sun Nov 23 08:16:09 EST 2008


Ralf, et al,

A solid state or relay interface is a good way to solve the interface
problem, but there is another even simpler way, if it appeals to you.

Heil makes a footswitch (FS-2) that keys two circuits, with a slight delay
between them. Of course you can't do QSK, but either can an SB-200. I've
used an FS-2 and they are easy to get used to. A nice feature is that if you
forget (or miss) the switch, your 100 W just goes straight through. It's
about $40.

>From their Web site:
The Heil FS-2 is a unique product specially designed for controlling two
devices simultaneously. A typical application would be to key a transceiver
with the BLACK lead and an RF power amplifier with the RED lead. Because of
the design architecture, the micro-switch controlling the RED lead keys up
first as the foot switch is depressed, thus the RED lead turns on before the
BLACK lead thus insuring that the amplifier is keyed first before drive is
applied from the transceiver that keys up last in the sequence.

Regards, Joel
Joel R. Hallas, W1ZR

    <<Ralf, just make up a simple interface between your K3 keying and the
keying input of your SB-200 <<or look for one of those interfaces that Yaesu
had available and I believe that Ameritron offers one <<as well.    Fern
VE7GZ




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