Fb Hans,
That is a fb idea!
And when a relay from a kit is NOT powered, then the relay contact for TX is switched to a little dummyload/resistor.
It can be made a bit foolproof I think, so that only 1 Kit can transmit on the antenna, the others (if transmitting) are then transmiiting into a dummyload. They just have to wait (when they are on the same band) hi.
73 Paul, pa0ocd
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--- In QRPLabs@..., Hans Summers <hans.summers@...> wrote:
Hi Paul
PS: Would be nice to have 2 kits running on 30 M , one on QRSS/FSKCW and the other on WSPR in a time slot so they do not byte each other.
Perhaps something for V1.05 firmware upgrade to have running 2 or more kits, even switching antennas?....
There is already a v1.05, see
What I can do for v1.06, is to use one of the spare I/O pins (labelled
F0/F1/F2 on the connector) as an indicator of when the kit is
transmitting a frame. This signal could then be used to switch a
relay, to connect the kit output to the antenna. This way, you could
have multiple kits running different modes and even, different bands.
As long as the frames were set up so that they were transmitting at
different times, you could make this work quite well.
73 Hans G0UPL
