[Lowfer] NC hifer is back
Dexter McIntyre
[email protected]
Sat, 26 Jul 2003 12:51:14 -0400
Thanks for the reports Lyle and Lloyd. I've had it on for over a week just
to test the oscillator. The antenna it's presently on isn't resonant and the
power is no more than 1 mw. The oscillator is a transmit channel element for
a Motorola Mitrek. The crystal cost about 5 times more than one of the Epson
oscillators and appears to be less stable. Not the best way to go but I just
thought I would try something different. Keying is done by a slight change
in voltage by shorting a series resistor with an opto isolator chip (TAG
Keyer). I suspect the frequency will drift around with temp change when I
move it to the LF shack. It is presently in the house shack where the temp
changes very little. I may move it the the dipole next week.
Dex