2014 ARRL 10 GHz and Up Contest
Sep 20, 2014 - the “10 Gig & Up” Contest - my first real 10 GHZ QSO (I don't really count, 50+ years ago, a 200 foot contact down my driveway to my non-ham father. The rigs came from a QST article using an amplitude modulated 2K25 klystron and a 1N21 in a tomato can as a mixer and a surplus IF strip.. The klystrons were tuned the IF apart. By the time I lugged the IF strips back from Cortland Street I had run out of wherewithal for dishes. We did a lot of careful aligning of those tomato cans!!!
That was then, this is now! Fast forward half of a lifetime … I had agreed to host the Forguites boys, brothers Randy, KA1LEX, and John, N1EEV on their weekend rove. As promised noon also brought Randy and John … and … surprise … a third 10 GHZ unit for me to use … I dug out my trusty FT817, key, mike and the appropriate cables and got setup … we had a sked with Mike, N1JEZ, and Henry, KT1J, way across Lake Champlain 82 km near the summit of Whiteface and Mike went first on 10 GHZ and despite the heavy clouds laying on the lake they found each others signals and made the exchange quickly. Then John and Mike and then me. The loaner unit I was using had as its 10 GHZ signal source an assembly salvaged from a collision avoidance sensor mounted in a box chassis and feeding a 6 db horn … output about 5 milliwatts … between my inexperience and the awesome drift of the sensor, it took almost 10 minutes for Mike to find my signal. That done, I locked in on his signal pretty quickly. The three went around again. This time with Henry. Then Randy and Mike worked each other on 24 GHZ and 47 GHZ.
Picture 1 - Brian, N1BQ, using Randy’s 10 GHZ loaner ( box set up on end with feed horn)
Picture 2 - Brian’s operating position FT817 IF rig, CW paddle and mic
Picture 3 - John, N1EEV and Randy’s 24 GHZ rig
Picture 4 - Brian, N1BQ and Randy’s 47 GHZ rig
Picture 5 - rear view of the 47 GHZ rig, showing the small transverter/ amplifier combo which puts out a whopping 10 MICROwatts!
-- N1BQ
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