[Elecraft] tx/rx isolation and safe tx input power for K3

pendulous Michael.Irizarry at uscellular.com
Tue Mar 1 09:17:32 EST 2011


Good morning. I have a K3 with a P3 and all the fixins. I have had the radio
since before Christmas. Love it. Great product and great company. I recently
installed the DX engineering bidirectional Beverage systems. I have been
using them in conjunction with the K3 and a Hustler 6BTV and a couple of
Dipoles-seperate TX and RX. SeemS to work well. I have a question concerning
the minimum safe TX RX antenna separation to protect the front end of the
K3. I have not heard the COR kick in, at least I don't think so. Anyway, the
separation between the TX antennas and the beverages ranges anywhere from 50
feet to 90 feet, with the Beverages for the most part broadside to the TX
antennas. Transmit power is never more than 800 watts on CW. Is this a safe
distance for 160 to 20 meters? Is there a formula or model that allows one
to easily calculate the required isolation in terms of distance? Thanks in
advance for your help.

Mike
AB4KJ

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