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LF: RE: Re: Re: Re²: Tune the loop with varicap or tuning condenser

To: [email protected]
Subject: LF: RE: Re: Re: Re²: Tune the loop with varicap or tuning condenser
From: [email protected]
Date: Wed, 25 Aug 2004 18:49:58 +0200
Reply-to: [email protected]
Sender: [email protected]
Thread-index: AcSBMtRKuBwps1rGQEyYPACKt6WtswJkBS5A
Thread-topic: Re: Re: Re²: Tune the loop...
I got to the conclusion that the coupling loops should have an area of 1/100's the tuned loop.
Note that some suggest using tuning capacitor for the loop. My loop tuning is so sharp - it is 25dB variation from 136-138.8kHz, so the only way out is to use varicap tuning
73 Jan-Martin

J M Noeding, LA8AK QRL: 9077-7126 (QTH: 0047-380-87178)

-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of F6CWN
Sent: 13. august 2004 14:32
To: [email protected]
Subject: LF: Re: Re: Re²: Tune the loop...

13./08/2004   1211z
Hi Bryan,
I also used a loop with a second loop inside, then i receive very well a submarine transmitter very close...
The mutual coupling between the low Z pick up loop and the "RX" loop elarge the BW...They are no miracle!
Maybe the loop # 142857 will be perfect, wait and see!  :-))
 Jeff / F6CWN
----- Original Message -----
From: captbrian
Sent: Friday, August 13, 2004 11:05 AM
Subject: LF: Re: Re²: Tune the loop...

 I wonder why you don't use the commonplace  (for higher frequencies ) small  loop inside the bigger one for impedance transformation and variable coupling?. Notice I am learning from others' mistakes before making my own loop  :-))
Bryan G3GVB
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