[Lowfer] Preamp question

[Mitch Powell]

> 
> The transformer should have 30 turns of bifilar wound on it. Connect one
> wire from one end of the pair to the opposite wire at the other end of
> the winding. 


That's exactly what I did - I assumed bifilar was correct. Thanks for the
confirmation.

If the winding is correct and the resistor values are
> correct the feedback will establish the gain at 20 dB. Over the years
> we've built about 2000 of these amplifiers and I've never seen the gain
> stray more than a dB from the 20 dB mark.

I will do a more detailed check after I box things up and tighten up the
leads.
 

 Since the preamplifier doesn't overload (I
> can only speak for my location) there really is no reason to tune it to
> resonance anyway - right?

Yes - I am using the pre-existing tuned loop - and it's been raining for
1-1/2 days now so can't get outside and "un-tune" it. Looks like good wx
tomorrow so will throw the capacitors away !.

Thanks again

73

Mitch

P.S. Don't let Bill know that I have a 7 ft octoloop , a KI0LE open frame
with remote tuning, as well as these two antennae. How many permutations can
we do with that ?  <grin>