[Elecraft] RX antenna protection

[KENT TRIMBLE]

The Johnson 250-39 and B&W 380 T/R switches both had a certain amount of 
"suck-out" but they did protect tube receivers.

I had both (still do) and preferred the Johnson.

http://wireless-girl.com/Projects/TRswitches/Johnson/

Note the warning about use with solid-state equipment, however.

73,

Kent  K9ZTV



On 8/15/2017 11:58 AM, someone wrote:
> Just a note to say that years ago, I had a B&W Electronic Antenna Switch (I think it was called) that had one or two tubes in it.
> It worked perfectly to bias the receive completely and immediately as soon as transmit was detected.  It allowed full break-in for CW work.  I would like to see something like this again today in solid state.  I think this would be the ticket for what you need. I haven’t looked, so I don’t know if anyone is marketing such a device.
>
>