[600MRG] [Elecraft] Use of K3 on 600m (and below)

[Pat Hamel]

If you substitute the Elcraft test output for the Icom with no power on the
finals, the plug-and-play system AA1A showed us a year or so ago should be
an easy assembly. Check his web site or email aa1a at arrl.net.
73,
Pat /6


-----Original Message-----
From: 600MRG [mailto:600mrg-bounces at w7ekb.com] On Behalf Of Ken Roberson
Sent: Wednesday, September 11, 2013 7:48 AM
To: Edward R Cole; Jim Miller
Cc: Elecraft Reflector; 600mrg at w7ekb.com group
Subject: Re: [600MRG] [Elecraft] 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 <kl7uw at acsalaska.net>
To: Jim Miller <jim at jtmiller.com> 
Cc: Elecraft Reflector <elecraft at mailman.qth.net>; "600mrg at w7ekb.com group"
<600MRG at 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
dubususa at gmail.com
"Kits made by KL7UW" 


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