Automatic retune for Impulse

[SWMO Mark]

I know the Fisher Impulse never became popular because of the lack of a automatic retune. What I have always wondered if it might be possible to make it run like a SAT. I know on my Nautilus you have a choice of runnung it with a manual retune or automatic. On the automatic retune switch there is a 1-2 megohm resistor. Cant remember exact number. I am assumeing this resistor is allowing a small charge to go to the retune circuit, instead of haveing to hit the pushbutton retune. If this is right, wouldnt it be possible to add a similar resistor on the Impulses retune switch to accomplish the same thing? Anyone have any thoughts on this? Thanks, Mark

 

[Eric Foster]

Hi Mark,

No idea. If can can find the Impulse schematic I might be able to say, but it was a fairly complex circuit for what it achieved. Also unusual was its bipolar triangular shaped pulses, rather than unidirectional more or less rectangular, that most PI's have.

Eric.

 

[SWMO Mark]

n/t