[Elecraft] K3 sensitivity below 40 meters

[Fred Smith]

On my FTDX-5000MP I never had the preamp on for anything below 40m all it
did was increase noise. All that was ever done was to use the DNR to bring
the signal up out of the noise floor a lot of the time for a signal only saw
on a spot you had to bring it find it with the DNR on that frequency. As I
have said this is a point that the 5000 does better than my K3's about the
only one though.

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of kt5d at charter.net
Sent: Tuesday, November 13, 2012 8:39 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 sensitivity below 40 meters


Conventional wisdom historically has been that a receiver preamp is not used
at 40 meters and below primarily because it is not needed, indeed it would
typically degrade receiver performance. So why is it necessary to engage the
20 dB preamp on the K3 to get it to hear an S9 signal at the appropriate
level of other receivers?
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html