[Milsurplus] A Great Gift for my TCS RX

[David Stinson]

A friend sent me a great gift for my TCS receiver (Lord bless 
you, Clare!  This thing is very cool).
 If you like "boatanchor" receivers and should you ever see one 
of these things, grab it! It plugs directly into a 6SK7, 12SK7 or 
similar IF stage in place of the IF tube and adds a mechanical 
filter to the set. It was intended for HRO-60 and SP-400, but 
works with similar IFs like that in the TCS.

Like most WWII receivers, the TCS was engineered "wide" so 
lightly-trained radiomen could hear each other if within a few 
KCs of each other. Good for WWII comm but not so good on the ham 
bands.

This short video (I edited out fil warmup time) is my TCS-13 
receiver tuned to a CW DX pile-up on 30 meters. It opens with a 
view of the module and the 1.2 KC filter in it. The tubes are 
6BA6 and 6AU6. You wire the fils in series or parr. depending on 
your fil voltage. I swap between the filter module and the 
original 12SK7 1st IF, then back, not changing the tuning (except 
right at the end). I think you'll see why I'm tickled with it.

Here's the link to the video:

https://goo.gl/photos/J7v8pZkW5oGuTMvA7