[TenTec] 318 and qsk-5

[denton sprague]

I used to have a Hallicrafters SX101A reciever and a HT32B transmitter with one of those Johnson TR switches….qsk ssb anyone??
On Dec 7, 2013, at 2:07 PM, "Rick - DJ0IP / NJ0IP" <Rick at DJ0IP.de> wrote:

> The reason that the amp had no T/R relay is, there were no transceivers back
> then.
> We had separate receivers and transceivers.
> Antenna switching was always done external to the transmitter.
> Transmitters had no T/R relay.
> The transmitter was simply connected to the input of the amp.
> 
> Many people used an external T/R relay to switch the antenna between the
> transmitter and the receiver.
> If you used an amp, you just used the same switching circuit but connected
> it to the amp's RF out.
> 
> Even cooler was the "Johnson Viking TR Switch."
> This was an external device with two vacuum tubes that automatically
> switched the antenna between the RX or TX (instantly) whenever it was
> activated.
> 
> I guess we can say the Ameritron QSK-5 is the descendant of the old Johnson
> Viking TR Switch.
> 
> 73
> Rick, DJ0IP
> 
> 
> 
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