[AMRadio] Fw: determining frequency of a transmitter?

Mike Duke, K5XU k5xu at comcast.net
Mon Mar 17 16:38:34 EST 2008

A friend recently posed this question to me.

Since there are builders here who know far more about tank coils than me, I,
yield to the experts.

Mike Duke, K5XU

----- Original Message ----- 
From: "Howard Traxler" <htraxler2 at EARTHLINK.NET>
Sent: Monday, March 17, 2008 7:09 AM
Subject: determining frequency of a transmitter?

recently I purchased a transmitter--home brew.  There is no designation of
what frequency band it operates.  It is a plate modulated 807, crystal
control (oscillator tube missing).  The output tank has some rather small
tuning capacitors and a air wound coil about an inch in diameter and maybe
eight turns at about half inch spacing with a tap a couple turns from one

Any ideas?  Thanks

73, de Howard, WA9RYF

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