Message-ID: <48D942AF.1040207@telia.com>
Date: Tue, 23 Sep 2008 21:25:35 +0200
From: "Johan H. Bodin" <jh.bodin@telia.com>
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Subject: Re: LF: Choice of RX for 136
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John,

a simple "Softrock style" front end adapted for 136 or 500kHz should 
work very well if you have a decent soundcard. There are a few SDR 
programs that works with such a front end, for example I2PHD's Winrad. 
Considering how narrow these bands are, there is no need for a VFO. Just 
use a crystal oscillator for LO and do the tuning in the software.

Perseus is indeed a very good receiver, and it is a lab' instrument as 
well. I will *never* regret buying that "appliance"! ;-)

The Perseus itself is very quiet but whenever a computer is involved in 
the receiving process, beware of the potential noise sources... Here is 
a horror story about my Dell laptop:

   http://web.telia.com/~u33233109/dellpsu/dellnoise.html

73 de Johan SM6LKM


John RABSON wrote:
> My receiver for this band is a Lowe HF250 with a 2m x 2m loop (estimated effective height 8 m).  It received G3XIZ surprisingly well on Sunday even though the selectivity of the receiver leaves something to be desired and there is a crossmodulation problem with longwave broadcast.
> 
> I'm thinking of getting something better, such as an SDR (Perseus?).  What do people think?  
> 
> 73
> John F5VLF