630m on K3/S

[Elecraft mailing list]

After reading the Elecraft Application Note on this, I'm wondering if there has been discussion at Elecraft of producing an XV.472 (sic) transverter?  
Imagine, a fella could even operate 630m from his K2.
Elecraft could be first on the block with true 630m integration.  
Instead of throwing a wire into a tree, we could throw a 29-ft slinky into a tree.  Mouth-watering.
73 Eric WD6DBM

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[Don Wilhelm]

Eric,

Are you kidding?  Yes, the K2 can receive 630 meters with a suitable
transverter, but it would have to have an input/output frequency at 14
MHz or above.

The K3 with the new synthesizers and the upgrades to the KBPF3 can tune
down to that band, as can the K3S with the KBPF3 option.

You can use the transverter output with the K3/K3S in TX TEST mode to
provide a 1mW signal to an amplifier for those low frequency bands, or
you can use an external transverter.

I don't know of any plans to produce a low band transverter from Elecraft.

73,
Don W3FPR

On 3/14/2018 6:59 PM, eric norris via Elecraft wrote:
> After reading the Elecraft Application Note on this, I'm wondering if there has been discussion at Elecraft of producing an XV.472 (sic) transverter?
> Imagine, a fella could even operate 630m from his K2.
> Elecraft could be first on the block with true 630m integration.
> Instead of throwing a wire into a tree, we could throw a 29-ft slinky into a tree.  Mouth-watering.
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[k6dgw]

For a number of years, I SWL'd on LF using [or at least trying to use] a
Palomar receive up-converter 0 - 600 Kcs to 80 meters.  In NorCal,
LORAN-C took out everything.  LORAN-C is gone now, but the bleed-through
on 80 meters made this a very difficult challenge.  I really can't see a
market for any such product for the K2.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 3/14/2018 6:00 PM, Don Wilhelm wrote:

> Eric,
>
> Are you kidding?  Yes, the K2 can receive 630 meters with a suitable
> transverter, but it would have to have an input/output frequency at 14
> MHz or above.
>
> The K3 with the new synthesizers and the upgrades to the KBPF3 can
> tune down to that band, as can the K3S with the KBPF3 option.
>
> You can use the transverter output with the K3/K3S in TX TEST mode to
> provide a 1mW signal to an amplifier for those low frequency bands, or
> you can use an external transverter.
>
> I don't know of any plans to produce a low band transverter from
> Elecraft.
>
> 73,
> Don W3FPR
>
> On 3/14/2018 6:59 PM, eric norris via Elecraft wrote:
>> After reading the Elecraft Application Note on this, I'm wondering if
>> there has been discussion at Elecraft of producing an XV.472 (sic)
>> transverter?
>> Imagine, a fella could even operate 630m from his K2.
>> Elecraft could be first on the block with true 630m integration.
>> Instead of throwing a wire into a tree, we could throw a 29-ft slinky
>> into a tree.  Mouth-watering.
>

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[Brian Hunt]

A properly equipped K3 or K3S is a good receiver on 630m and as Don pointed out will produce 0.5 mW from the Xverter interface. I've made the mods and checked the output on my 10 year old K3 and it's good to go.
There are several amplifier designs on the web that will give 50-100 watts output and I think a few commercially available amps as well. Probably some adaptation needed for the K3 output tho.
The real bugaboo is the antenna. A resonant small multi-turn loop is good for receive. The transmit antenna needs a big hi-Q loading coil and as much wire as you can get into the air. That's my sticking point at the moment.
I think it's a real opportunity to get back to basics.
73,
Brian, K0DTJ
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