[R-390] T207 T401

[Flowertime01 at wmconnect.com]

Keith,

You ask about,  a procedure for aligning  T207 ( 17meg) or T401 (crystal osc) 


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You are correct.

For T401 the procedure is to run the MC to 31 and peak T401 and the cap for 
maximum output.

In practice you find the MC band with the lowest output level and retune T401 
to bring that band up enough to pass the 10:1 signal to noise ratio test on 
that weak megahertz band. There is no one best absolute setting for T401. You 
use it to get the bast of all bands out of it.

T207 the output of the first crystal oscillator is the same approach. That 
transformer always passes 17Mhz. Pick any point under 8Mhz and adjust T207 for 
maximum output on the diode load for minimum RF input at the antenna input.

You get like one clause of a sentence in the original TM on these subjects.

Hope this helps

Roger AI4NI
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