Brian,
I think Jim is more concerned about his beverages losing their directional
properties due to re-radiation of received signals from his transmit antenna. I
don’t think there is a simple way of doing this and it’s probably best to
abandon QSK operation when using the beverages and use a
Earlier I suggested PIN diodes for this purpose. Upon reflection (no pun
intended) I realize the one would be hard put to find PINs that have the carrier
lifetime to function at 1.8 MHz.
I think that a vacuum relay might do it, but think that sequencing everything
wouldn't be trivial. All of
I use and like QSK on my K3 but I'm now looking at detuning my 160 inverted
L to avoid reradiation into my beverages when in receiving.
I'm looking at what it will take to do that and it appears that if the 160
inv-L is just deselected by the remote DXE relay box it will just be an
ungrounded 1/4
Another way to do what you want might be to switch some attenuation into the
receive path during transmit. I assume you are using the RX antenna port for
the beverages. The switching could be done with pin diodes with the timing
tuned to allow QSK.
Hope this helps.
Brian, K0DTJ
On Dec
I have no idea how you are feeding the inverted-L but I suspect some kind of
series feed. Nevertheless this seems like a job for some PIN diodes. Depending
of the situation, switching in something that would shift resonant frequency or
otherwise disturb the matching would do it (nearly
I suggest using a vacuum relay at the antenna. I wouldn't want to switch a
relay box even with a sequencer at a semi-QSK rate.
Vic K2VCO /4X6GP
On Dec 20, 2014, at 10:45 PM, Jim Miller j...@jtmiller.com wrote:
I use and like QSK on my K3 but I'm now looking at detuning my 160 inverted
L
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