sg-lab 1296 xvtr

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James Christiansen

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Aug 14, 2014, 9:31:46 AM8/14/14
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One left on e-bay.

Does it look like I'm pushing these things?  You bet.

Jim K7ND

Ask our rover, WW7D/R, if they work.    

There will be one for a prize at the conference.  Best get signed up.

Darryl Holman

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Aug 14, 2014, 12:08:07 PM8/14/14
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Indeed, these are great little transverters, and they are quite easy to set up and use.   Drive 'em with between 1/4 W and 5 W (adjustable in the transverter) at 144 MHz, and it delivers 2 to 2.5 W at 1296 MHz.   

Right out of the box I was able to connect one to an old Yaesu FT-290R and complete QSOs off the Olympics with Jim (K7ND) and Mike (KD7TS).    I used one during the recent ARRL UHF contest with the FT-290R and an 18 W amplifier and either a 10 el WA6VJB "cheap yagi" or a 22 el loop yagi, and made 35 QSOs, including 4 QSOs from CN85 back into CN87 (write-up here: http://tinyurl.com/WW7DUHF2014). 

The transverter can be configured for 3 types of T/R control:
   -- RF sensing of the IF rig
   -- PTT to ground
   -- +12V on the IF coax (particularly useful with an FT-290R as Mike pointed out to me)

Most options are jumper-selectable.   It comes configured with built in T/R switching w/ single connection to the antenna, but can be reconfigured (via moving a surface mount component) for separate transmit and receive connections for use with amps and/or preamps and a single external T/R relay.    There is a built in 25 ms "delay on transmit" output that can be utilized as a simple sequencer.   And it does offsets for repeaters.

It uses multi-color LEDs to indicate proper IF drive level and SWR.  There are also output voltages proportional to forward and reverse power that can be used for external metering.

All this for $200 is a real bargain.    Down East Microwave discontinued their 1296 MHz transverter line a few years ago (for "redesign"), and they were twice the price, so I believe this is the only game in town for low cost 1296 MHz transverters.    I mean, that's cheaper than any 1296 MHz FM rig on the market.  

The seller seems to be putting a couple on Ebay every two weeks or so, and they sell pretty quickly.   You can contact the seller directly to purchase one outside of Ebay.  See the SG-Lab web site for more information about the transverter and contact information:  http://sg-lab.com/TR1300/tr1300.html

I received mine in something like a week (and it came with a 2 element PC board yagi). 

If you have any interest at all in 1296 MHz, I recommend you pick up one of these puppies.

Best,
   Darryl
   ww7d

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Darryl Holman

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Aug 15, 2014, 1:52:03 AM8/15/14
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Hi All,

   The UK Microwave Group has teamed up with the Summits on the Air (SOTA) people to create a new SOTA activity/award, based on microwave (23 cm+) QSOs to summits.   Both summit activators and those "chasing" summits are eligible.    Details are here:   http://www.sotawatch.org/reflector.php?topic=9634

  Tomorrow, Etienne, K7ATN, and I will be heading to separate summits for doing microwave (and other VHF+ frequency) activations. 

Etienne will summit Mt Walker (47 47 18 N, 122 54 23 W) at around 2:30 pm PDT.  He will be active on several frequencies:  1296.2 MHz FM, 146.52 MHz FM and 432.25 FM. 

And I'll be activating Squawk Mountain ( 47 30 15 N, 122 2 49 W) around 3:00 pm PDT.   I'll be active on the same frequencies, and may also do some SSB/CW on the 2m and 432 MHz calling frequencies.   

We'll each have horizontally polarized 10 el yagis on 1296.2 MHz FM, so if you cannot get us on 1296.2 MHz, catch us on 146.52 MHz or 432.25 MHz FM to coordinate.

This is my first time doing a SOTA activation.  In order for it to "count," I must work at least four different stations.  So, if you have a chance around 3:00 pm, I would much appreciate the QSOs.   Etienne would as well.    

Best,
   Darryl
   ww7d

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