Re: LF: VU/DF6NM, last chance

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

Hello Mike,

Sorry about that. Maybe it calms down in a few minutes :-) (Dreamer, you know).

I have had the same problems, especially when rain came up while i was sleeping and transmitting over night.
What you need is an automatic variometer that compensates the mismatch immediately. Maybe you remember my mail some weeks ago where i published my circuit. Here are the links again:
http://dl.dropbox.com/u/19882028/LF/DK7FC%20Automatic_variometer_tuner%20.jpg
http://dl.dropbox.com/u/19882028/LF/automatic_variometer_board.jpg
http://dl.dropbox.com/u/19882028/LF/LF_variometer_drive_engine_arrangement.jpg
http://dl.dropbox.com/u/19882028/LF/variometer%20end%20switches.jpg (new)

A nice and easy project but maybe you aren't as fast to complete it in 90 minutes ;-)
Here i can see the LEDs indicating short impulses on the engine. The phase remains at +- 0 !

...also good for QSY without caring about the phase..

73, Stefan/DK7FC



Am 22.02.2012 18:14, schrieb Mike Dennison:

I would love to join in Stefan, just like I have done for the last 
few evenings. But the wind is quite high today and the antenna is 
detuning with every gust.

Good luck.

Mike, G3XDV
==========

  

Just been in phone contact with Markus/VU/DF6NM. Today is the last
chance to leave a trace on south India. We will try an early test.
Markus will start to receive at _*17 UTC*_ until his netbook accu is
down, which means about 90 minutes. So give it a try! QRG 136.172+-
QRSS/DFCW-60

73, Stefan/DK7FC