[Boatanchors] Electronic T/R Switch vs Coaxial Type

[w8au at sssnet.com]

At 05:32 PM 11/5/2008, Garey Barrell wrote:
>The best electronic T-R switch I used was from a June 1957 article 
>in QST. It used a single 6AH6, and mounted INSIDE the transmitter 
>cabinet. and coupled to the PLATE side of the output Pi-Net via a 
>very small capacitor, meaning that any harmonic energy generated by 
>the switch was attenuated by the Pi-Net before reaching the 
>antenna.   There was a coax lead from the unit that went to the 
>receiver antenna.

I concur, Garey:

I built this circuit into a DX-20 and it was the best.  Only drawback 
was you could
not generally tune to any band unless the xmtr tank circuit was also 
tuned there.
If actually on the air, this was a moot point.

Perry   w8au