John GI7UGV (@gi7ugv) header
John GI7UGV (@gi7ugv) profile picture

Radio amateur, mandolin picker, sea kayaker. Can be found on satellites, the moon, microwave frequencies, the sea, the hills or making some noise.

Northern Ireland
Joined September 2014
Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)Photo by John GI7UGV (@gi7ugv)
Spending my radio club constructor contest winnings. Next year need to aim for first so I can get two Guinness, as long as the prices don’t keep rising anyway..
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The crappy Icom charging cradle annoyed me to the point I made one that actually holds the radio. Not that I own a boat to need this, but it’s holding even if upside down now.
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Replaced my old Icom handheld marine VHF with an expensive new one. The new radio seems fine, but the enshitification of Icom charging cradles is something to behold. Pretty sure the radio's going flying in heavy seas. £45 if you want to buy a spare one🤡
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Meshcore been interesting this past 24 hours, had to move to a local channel due to the massive number of folk on Public making it hard to talk local 😂
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30 years ago! Remember being driven 70 odd miles each way to the test (was 14yo) by my dad who didn’t really know why I wanted to do this or if it was worth the effort. It was :)
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Managed 15 3cm EME QSOs, 10 being initials, over the weekend without any complications or hassle. Fair to say the new antenna controller is doing the job.
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New rotator mounted with dish to test it out. Now fighting with the controller software and I’m not winning.
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Getting near the end point on the new rotator setup for the dish. Need to put up the ridiculously heavy new mount outside and run cables next.
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K3NG rotator controller with Nextion touch screen all boxed up and working well!
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Chunky new rotator works okay with k3ng Arduino controller software, and a mess of wires, just fine.
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PTRX-9700 working well, decodes are the same using just an RTL-SDR, can monitor beacons or other people with SDR (top) while have the 9700 doing its own thing. Second good upgrade after adding reference injection which was more of a necessity.
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Found a VK on 3cm via the moon as it came out of the hedge :D
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PTRX-9700 fitted and seems to be working well with the reference in. Decodes tiny bit down on the SDR compared to the 9700 but likely just need to tweak SDR settings. Good upgrade!
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And made up a little box for the reference injection board.
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Missing the RSGB convention but the postman took pity and delivered Radcom, CQ-TV and a PTRX-9700 at the same time to get me through the weekend.
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Managed a 3cm EME contact with the new 20w amplifier in a bigger enclosure confirming its working! Unfortunately it is kind of held together by a bit of string as the enclosure weight is all on one side..
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Time to take the temporary IKEA chopping board mounted and 3d printed plastic fantastic 3cm EME setup with super crappy cabling apart for a new enclosure and bigger amp. Can’t promise it will look any better but as long as it mostly works I’m good :)
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John GI7UGV retweeted
23cm Pa. Overtemp monitor to wire in coax relay to mount then alter transverter output for 8w drive test later in the week
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This weekends mission, turn a messy looking collection of bits in to something semi functional for EME. Will do it properly and in another form when/if I can acquire a bigger PA.
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Another 3cm EME QSO. Barely scraped through at -29, I guess a 2.4m dish at the other side is the limit for now. My RX with this setup without LNA at least 6dB worse than it should be and suspect power at feed is maybe lower than expected. Plenty of improvements to be made yet!
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