[Elecraft] 472KHz/500KHz

[Edward R Cole]

I did an experiment with 600-meter transceive on the KX3 (around 500
kHz). With the ATU installed, which provides additional filtering for
the broadcast band, the transmitter put out about 0.5 to 1.0 watts.
But additional low-pass filtering would be required, and as noted
above, receiver sensitivity is reduced in this band due to the high-
pass filtering.

73,
Wayne
N6KR
---------------
I tried keying the KX3 at 495 and 508 KHz and get BND END warning 
(probably because it is below edge of 160m).  How do you defeat the 
out of band restriction?

0.5w output would work very nice for me as I currently only use 0.1mw 
to drive my 100w converted Southern Avionics Non Directional Beacon 
xmtr (used as a high-gain linear amp).  The NDB is usable from 250 to 
600 KHz by simply tuning a slug-tuned one-pole BP filter.  Adding a 
preamp is an easy fix for receive as is a BP filter for 500-KHz.  I 
currently have a three-pole LP filter for 600m.

73, Ed - KL7UW
survived the 980mb massive storm last night (mostly affected 
Anchorage 70mi north of me).