[Elecraft] K2/100 in a high RF environment

[Fred Jensen]

One never knows, Chuck, RF can be very unpredictable.  If the TBL were 
feeding coax, you'd probably be OK just disconnecting the K2/KAT 
antenna.  Given that part of the TX antenna is inside the shack a few ft 
away and shipboard HF antennas are rarely resonant, I would plug a 
shorted PL259 into all the Elecraft ant connectors.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Chuck Chandler wrote on 11/6/2021 6:00 AM:
> Some background here -
>
> I volunteer aboard the museum ship USS Slater in Albany.  She is a
> destroyer escort restored to her 1945 configuration as she was sent from
> the Atlantic to the Pacific after VE day.
>
> I try to put it on the air every time I'm there, once a week or so,
> maintenance issues allowing.  We use a K2/100 and KAT100 patched through a
> WW2 vintage Transmitter Transfer Panel to a choice of the ships original
> wire antennas.  These were mostly verticals used for receiving back in the
> day.  We can also use the two original transmitting antennas, long wires
> running fore and aft.
>
> We are restoring a TBL 400 watt transmitter, which is only connected to the
> fore and aft long wires.  The output exits the top of the TBL cabinet and
> consists of copper tubing that runs along the ceiling (I know, overhead...
> I'm a civilian) to where it exits Radio Central.
>
> Legend has it (and I have no reason to doubt it, I've seen the repair
> invoice) that the last time the TBL was fired up the KAT100 was damaged.
> Our practice is to unplug the feedlines to the KAT100 at the Antenna
> Transfer Panel, as well as where they connect to the rear of the KAT100
> itself.
>
> The repair invoice says “The wattmeter in this KAT100 had been damaged. D1
> and D2 were replaced. R1 was found to be open and replaced. C31 was not
> well soldered. “
>
> Im wondering if unplugging both antenna feed lines from the KAT100 is
> enough protection from a 400 watt transmitter firing up a few feet away?
>
>
> 73 de Chuck, WS1L
>
> chandlerusm at gmail.com