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

[Ken Roberson]

Charlie,

Yes they work great , Have you tried to copy
the WSPR stations on 474.2 KHZ ?

73 Ken K5DNL





________________________________
 From: "Charlie T, K3ICH" <pincon at erols.com>
To: elecraft at mailman.qth.net 
Sent: Wednesday, September 11, 2013 3:07 PM
Subject: Re: [Elecraft] [600MRG]  Use of K3 on 600m (and below)
 

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" <kwroberson at yahoo.com>
To: "Edward R Cole" <kl7uw at acsalaska.net>; "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 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 <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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