Hello LF,
I have one of those from Shenzhen, and put it to use for a temporary 500 kHz grabber a few months ago. With an external antenna,
sensitivity was not a problem, but a tuned circuit was required at the input to mitigate MF and LF broadcast intermodulation. I
circumvented the frequency instability by switching the receiver to AM-wide demodulation and injecting an externally generated 500
kHz LO signal.
The Degen proved valuable for searching local QRM on LF. Walking around at night with an external ferrite antenna allowed me to
locate noisy underground ADSL and power lines to within a few centimeters. One is almost tempted to dig and cut... The receiver also
tunes below 100 kHz but does indeed become insensitive there - DCF77 and HBG are easily audible on the telescope rod, but VLF
signals are buried in a heap of LO sideband noise.
Best wishes
Markus
----- Original Message -----
From: "Julian Hardstone" <[email protected]>
To: <[email protected]>
Sent: Wednesday, December 03, 2008 12:50 PM
Subject: LF: Re: DEGEN 1103
A few observations - http://www.rosestone.me.uk/Degen.html including details of how best to use the 1103 at MF/LF and below
100kHz. If you should order an 1103 from the reputable dealer Liypn, you'll see he offers a couple of loop antennas
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