Sunday, January 27, 2013
The story of my 80/40 meter three tube (all 6U8) superhet receiver is recounted here: http://www.gadgeteer.us/erart.htm
I've been playing with this RX on and off for many years now. Somewhere along the line I picked up a 455 kHz filter for it (I couldn't find the 455 kc crystals that Lew McCoy used). Yesterday I finally got around to putting the filter into the receiver.
There is almost no info on this filter on the internet. Here are the details"
Toyo Communications Equipment Company Ltd. CM FILTER
Type: 455 -- 2.4 -- C Date: 8- 69
On the bottom, there are four terminals. They are marked "P" "B" "E" and "G". Does anyone know what these letters signify?
Here's how I've placed it in the circuit:
Ideas, suggestions and even admonitions would be appreciated.
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