Hi Chris,
Am 29.10.2015 21:26, schrieb Chris Wilson:
[...] albeit my loading coil needs manual
tweaking to move to the right part of the band. Not sure of the best
way to remote tune it, it would be nice to have the ability to move
about the band without running outside in the dark. I may start a
thread about what alternatives there are, thanks again Erwin
I'm using a motor driven variometer which uses the phase meter circuit
of the M0BMU LF tuning meter. It is working well on LF, where my antenna
resonance is so sharp that i have to re-tune when doing QSY by 7 Hz.
See:
https://dl.dropboxusercontent.com/u/19882028/LF/LFtunemeter.pdf
https://dl.dropboxusercontent.com/u/19882028/LF/DK7FC%20Automatic_variometer_tuner%20.jpg
https://dl.dropboxusercontent.com/u/19882028/LF/automatic_variometer_board.jpg
https://dl.dropboxusercontent.com/u/19882028/LF/LF_variometer_drive_engine_arrangement.jpg
https://dl.dropboxusercontent.com/u/19882028/LF/phase_meter.jpg
2011 was a nice LF year for me!! :-)
73, Stefan
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