[Elecraft] K2 and RX Beverage antenna

[Ken Kopp]

A word of caution ...

I severely damaged the RX antenna RF stage of my FT-1000D due
to RF coupling from the TX antenna (1KW, 160M) into the RX antenna.
I later measured the induced RF voltage with a 'scope ... it was many
volts.  Some commercial (marine) receivers have lamps in series with
the RX input for protection ... others have pico-fuses.

I realize this situation didn't involve a K2, but I'd be VERY careful.
I've since installed an external RX protection box on both my radios
RX antenna inputs.

Someone mentioned a 47 ohm resistor or an RF choke from the antenna
connector to ground.  I have this arrangement on my open-wire feeders
where they enter the shack.  Dry blowing dust or snow wcan build up a
considerable charge on the antenna and find a path to ground somewhere 
....

I mentioned marine receivers above ... Saint Elmo's Fire is a common
event at sea ... when you see your ship's antenns(s) "glowing" in the 
dark
you know why those protection lamps are there. (:-))  Bzzzzt!

73! Ken Kopp - K0PP