[Johnson] Johnson T/R Switch 250-39 Function

[radioart at frontiernet.net]

Its hooked to the antenna all the time...

Dennis Petrich
Amateur Radio Station K0EOO
Lakeville Minnesota USA
k0eoo at arrl.net
952-898-1082

----- Original Message -----
From: "Don Ehrlich" <ehrlich at clallambroadband.com>
To: johnson at mailman.qth.net
Sent: Thursday, October 15, 2009 12:33:28 PM GMT -06:00 US/Canada Central
Subject: [Johnson] Johnson T/R Switch 250-39 Function

I am thinking of bidding for Kevin's T-R switch.  I need to know if the 
switch can provide near-QSK operation.  Does is use a fast switching relay 
or is the transmitter connected to the antenna all of the time with 
isolation of the receiver during transmit?

Application would be with a Ranger and my SX28A where I am presently using 
manual switching.

Don K7FJ


>
> I have a T/R Switch #250-39 FA on eBay, auction #220493709998, and I
> would like to confirm it's proper operation before shipping.  Does
> anyone know where a scan of the manual is located on the internet?
> Short of that, can anyone  share with me the function of the PROBE
> connector, looks like a place to put an oscilloscope probe to view the
> RF Envelope, but that's a guess.
>
> Kevin K7ZS
>
>
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