I use my K3 on 4.0 to 4.5 MHz with an old Palomar VLF converter. I just
ignore the 4 and read the frequency directly in kHz.
Works great and for such a simple circuit, there's not a lot of
bleed-through.
73, Charlie k3ICH
----- Original Message -----
From: "Ken Roberson" <kwrober...@yahoo.com>
To: "Edward R Cole" <kl...@acsalaska.net>; "Jim Miller" <j...@jtmiller.com>
Cc: "Elecraft Reflector" <elecraft@mailman.qth.net>; "600...@w7ekb.com
group" <600...@w7ekb.com>
Sent: Wednesday, September 11, 2013 8:47 AM
Subject: Re: [Elecraft] [600MRG] Use of K3 on 600m (and below)
Hello All,
I also would like to use 3.5 to 4.0 mhz for the IF frequency
.
I have completed the homebrew 630m transverter to work
With the K3 . I am using 7 mhz IF , It seem to be stable ,
However
It’s easier for me to build a more stable oscillator at 3.5
mhz.
Also there is a broadcast station on 7.475 mhz .
I can see the carrier on 475 khz , I have tried a few things
To filter this carrier out, So far no luck , What a pain.
Yes the 80 meter IF would be nice.
73 Ken K5DNL
=================================================
________________________________
From: Edward R Cole <kl...@acsalaska.net>
To: Jim Miller <j...@jtmiller.com>
Cc: Elecraft Reflector <elecraft@mailman.qth.net>; "600...@w7ekb.com
group" <600...@w7ekb.com>
Sent: Wednesday, September 11, 2013 2:37 AM
Subject: Re: [600MRG] [Elecraft] Use of K3 on 600m (and below)
Jim,
Yes, the lowest transverter IF is 7-MHz. Of course you can operate
the K3 in low power transceive on any frequency from 490-KHz to
32-MHz if in the TEST mode. Only issue is VFO readout is the IF and
not the operating frequency of a converter or transverter.
But say you use 3.472-3.478 MHz as your IF? Your LO would be 3.000
MHz. This could even be a DDS oscillator locked to a 10-MHz
reference. A simple mixer and LO without filters would work 0-500 KHz
(maybe).
The wider issue if using other ham transceivers that only operate in
the ham bands.
My K3 has the EXREF board for referencing to an external 10-MHz
source. This enables 0.1 ppm accuracy. A 10-MHz LO is 1-Hz stabile.
73, Ed - KL7UW
At 03:58 PM 9/10/2013, Jim Miller wrote:
It would really be nice if K3 would support 80m as a transverter
frequency.
If it did it would enable 3.5-4.0Mhz to reflect the full 500Khz from a low
band transverter.
jim ab3cv
73, Ed - KL7UW
http://www.kl7uw.com
dubus...@gmail.com
"Kits made by KL7UW"
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