From: G0MRF@aol.com
Message-ID: <95.9d9fc99.2817f74a@aol.com>
Date: Wed, 25 Apr 2001 05:47:54 EDT
Subject: Re: LF: Pre-amps.
To: rsgb_lf_group@blacksheep.org
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In a message dated 4/25/01 9:47:36 AM GMT Daylight Time, 
rik.strobbe@fys.kuleuven.ac.be writes:

<< I did some tests woith pre-amps and found out that most simple designs have
 a too poor IM behaviour and make things worse instead of better. If I would
 design one I would primarily aim at a high IM rejection and don't worry too
 much about noise figure or gain.
 If you want to use one of the monolithic amps from Mini-Circuits I would go
 for something better than a MAR-6, that one has the worst IM behaviour of 
all.
 To compare :
  >>

I have MAV11SM  (65mA)  and MAR3SM  (35mA) devices here if you need them.
SM = surface mount.

Dave, Graham and I used a MAR3 pre-amp in Guernsey and found it overloaded 
with the large signal from Lessay. The MAV11 is rated at 60mW output and may 
be a better choice if you can spare the current.


73

David. G0MRF