[Milsurplus] Prog. Oscillator in WECO 227B

[David Stinson]

Well here's the first "operational prototype" for the 
transmitter crystal substitute.   I just did a single TX
channel for this first go.  The parts are on 
one side of the board and the ferrites on the other.
The toroid core turned-out to be an Amidon FT82-61.

Here's the top side of the board:
http://home.netcom.com/~arc5/oscbrdtop.jpg

And here's the bottom.
http://home.netcom.com/~arc5/oscbrdbtm.jpg

Shielded wire takes output to the XTAL socket.
An extra set of contacts on the "CHANNEL switch
connects the 12-volt ground on CHAN 4 (3890 KC)
to enable the board.  It works splendidly.   
Key-down for two minutes does make the heat sink 
warm but not too hot to hold.  Not terribly efficent 
but simplicity is the goal, so there are trade-offs.

73 DE Dave AB5S