This is from the LNR precision Web site: Update: 2/16/23: MTR4 V2.3 is not available for purchase now but we will be offering these again in the Spring of 2024. We don’t have an exact date yet but the target is by the end of March. This will be the only and last offering of the MTR4b V2.3 radios as we are shifting focus on a redesigned and re-engineered version of the popular MTR3B! It is our hope to have these out in Fall of 2024 if possible, but no guarantees. I’ve been trying to buy a MTR-3B LCD for years
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SW-3B Display Problem – Fixed!
The SW-3b is my favoite POTA rig. About June of 2023, the radio developed a problem with the LCD display. At first, the display would have random characters on one line. This was intermittent. As the year progressed, with each POTA activation or use, the display got progressively worse. The entire display would be garbled after a few minutes of use. The last time I tried to use it for a POTA activation in October 2023, the display was completely blank when the radio was turned on. I spoke with Dale at Venus about the problem. He suggested re-soldering the
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QRP Guys End Fed Half Wave Antenna – Part 3
I didn’t have time to test the antenna before our cabin trip, so I took some measurements on-site. The antenna was strung between the upper deck of the cabin and a nearby tree. The wire I used was 63 feet long, I intended to cut it to length when the antenna was put up. What actually happened was I passed the end of the wire through a plastic dog bone insulator and wrapped it back on itself about a foot, and called it good. The SWR turned out to be so close to perfect, I didn’t make any adjustments. Here
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uBitx V3 – Part 4
Here is my completed uBitx. It worked perfectly the first time I applied power. Well, except I had the encoder wires backwards so the tuning was backwards, but I don’t count that. The microphone, keyer and external speaker jacks are on the front panel. I plan to make custom knobs (red of course) on the lathe when I get time. There is a custom made heat sink on the back. It connects to a custom made piece of thick aluminum on the inside of the case where the final transistors mount. This view show power and RF connections. You can
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