[Lowfer] New LF RX Conv Published

[PAUL DAULTON]

Peter I read that article with great interest. I"ve built dozens of
 circuits with the ne602, including the up
converter in Drew Diamonds book "QRP Projects from Downunder"
I built a simple rec a couple of weeks ago using two ne602. The input of
 mine is a simple pi lowpass . The 
first stage is crystal controled by a 5.185 xtal, second is controled by
 5.000 xtal. It gives + or - 185.000khz audio
difference to the sound card. Stability is not too good with battery, I am
 going to add regulator and run it from 12v.
Also freq is off but I can compensate with ARGO and Spectran calibration
 offsets. Havent copied anything but 
my own beacon, but it will be handy to carry aound in the car for feild
 strength readings.  Larry Coyle's front end is 
much better than mine I will try that. Mine has way less than $10.00 worth
 of parts. If I were building Larry's I
would add an oven oscilator for calibration accuracy.
Looking foward to second part of that article.
thanks
Paul K5wms
-----Original Message-----
From: "Peter Barick" <pbarick at niu.edu>
Sent: Sun, 26 Oct 2008 22:15:55 -0500
To: <lowfer at mailman.qth.net> 
Subject: [Lowfer] New LF RX Conv Published
 
 
Gents,  
Re: New LF RX Conv in QST  
 
Larry Coyle K1QW has part 1 of a 2 part piece on his design of a
 WINRAD-type converter for LF. Uses the SA602AN chip module and describes
 his rx loop. The software defined rx part to be in Part 2.  
 
Some here should find his ideas, in part of all together, of interest.  
 
See the Nov. 2008 QST, pp 36-39.  
 
--Peter  
_______________________________________________  
>From the Lowfer mailing list  
Send messages to: Lowfer at mailman.qth.net  
To sub/unsub visit: http://mailman.qth.net/mailman/listinfo/lowfer  
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.qth.net/pipermail/lowfer/attachments/20081026/949290bc/attachment.htm