Re: [Moon-Net] Elecraft transverter

[Seb]

You should know that DEMI can install (and probably sell as a kit for you to install) the ApolLo synthesizer board inside of Elecraft transverters.  I asked Steve at DEMI some time ago if it would be possible, and he asked me to send him my XV222 transverter.  Within a few days, I received it back and is now connected and locked to my external 10 MHz reference source.

Mine was the guinea pig and Steve mentioned that he would document its installation.  Even with Elecraft’s TCXO, its frequency was not stable enough for meteor scatter use.

73 de Sebastian, W4AS

> On Dec 30, 2016, at 4:30 PM, [hidden email] wrote:
>
> Tom, I also have a Elecraft 432 transverter. After working on it for a month
> with Elecraf'ts help I could not get it stable enough for jt65. Elecraft
> agreed I had got it as stable as it was going to be.It is ok for ssb and cw.
> I am using DEMI transverters  on 144,222,432, 1296,2304,and 3456. The only
> units with  10mahz reference are  2304 and 3456 which are dead on. I do not
> think you are going to find many transceivers that go above 1296. With a
> stable transceiver transverters are the way to go and cost effective for
> multiple bands.   The 432 Elecraft is for sale. I  am keeping the 2m  
> Elecraft for backup in case of emergency during vhf contest. KUHNE makes
> excellent  equipment but is out of my price reach. Tom got ur qsl today
> return is on way tnx. gl paul, wa3qpx
>                                                      

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[Edward R Cole]

This topic started on the Moon-Net reflector but I see it has
migrated over here.

Most of you probably know that I run a business building kits that
started with the DEMI transverters.  The 50-MHz thru 432-MHz
transverters all can be equipped with the VHF-APOLLO synthesized LO,
which is a single pcb which mounts on two standoffs above the main
transverter board.  The kit comes with new DPDT power switch,
mini-coax, hookup wire, blue LED lock indicator and BNC connector
which provides connection with external 10-MHz reference.  DEMI sells
the VHF-APOOLOK kit for $134 and I can install it for you for $25
plus shipping.

But if you have a solder iron its a 30-minute to 1-hour task with no
surface mount installation.  Kit comes with instruction sheet.  Synth
board is fully assembled and kit only includes parts for installing it.

I have one on my L432-28 transverter and on my 1296-28
transverter.  Not needed on 50-222 MHz in my opinion.

To get the best freq accuracy and stability install the TCXO-03 plus
the EXREF in the K3.  My tests show +/- 2 Hz at 28-MHz on the K3.

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   [hidden email]

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