[Premium-Rx] Synchronous Detector for WJ and Harris receivers

[Carcia, Francis A HS]

I have the detector module from the Yeasu FT1000 that uses the MC13022 with
so so performance. I had to add a cap in the loop filter to slow it down.
Then the lock time extends though. I like the clock recovery of the Racal
since it is not a
PLL. Down load the RA6790 manual and check it out. I may try to use it as
part of a I/Q demodulator.
Racal uses a MC1357 for clock recovery and a MC1496 as a demodulator. 
A real good I/Q demodulator is the LTI eval board but it has to hang off an
IF above 40 MHz. 
The I/Q base band goes to the sound card and then you can run SDR software.
fc

-----Original Message-----
From: Craig Anderson Ext 1365 [mailto:Craig.Anderson at saintpaul.edu]
Sent: Wednesday, December 08, 2004 3:22 PM
To: premium-rx at ml.skirrow.org
Subject: [Premium-Rx] Synchronous Detector for WJ and Harris receivers



I am looking for a good design for a 455KHz Synchronous Detector for my
WJ-8718 and Harris RF-590A.  I have seen several good articles in the past
but they all use chips like the MC13022 or Exar that are discontinued and
not readily available.  Rather than spend $600 bucks on a SE-3 I would like
to role my own.  Any ideas?

 

W9CLA

Craig L. Anderson, Ed.S.

Vice President - Administration

Saint Paul College

Minnesota State Colleges & Universities System

651-846-1365 Voice

651-846-1675 Fax

 

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