Would not an external preamp designed for 100 KHz not improve
sensitivity? Many operators use small loop antennas with preamps on
both 600m and LF.
73, Ed - KL7UW, WD2XSH/45
-----------------------------------------------------------
Date: Wed, 18 Feb 2015 10:17:09 -0800
From: Wayne Burdick <[email protected]>
To: Harry Yingst <[email protected]>
Cc: Elecraft Reflector <[email protected]>
Subject: Re: [Elecraft] KSYN3A and below 490 KHz?
====snipped
> Is it possible to move the lower limit down (lower than 100 kHz)
or is is a constraint of the HW?
The latter. Sensitivity gradually decreases as you do down in
frequency, and you start hitting a practical lower limit for the
receive chain.
The preamp is not useful below 500 kHz, and will actually introduce a
loss when turned on, so it should be left off in this range.
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[email protected]
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