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Fall is the perfect time for hiking, it\'s not too hot and not too cold. Last weekend I took a day trip to hike up High Mountain in New Jersey and activate SOTA summit W2/NJ008. It\'s really easy to set up an HF portable radio and not a whole lot to carry up the mountain. This...
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HAM radio makezine diana eng |
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In building the ham radio 40/80 meter inverted v antenna I ran into a slight set back. My SWR readings were very high and I first thought my antenna or cable to be bad. Fearing the worst I found the problem. A short circuit in the SO-239 connector in my MFJ-259B Antenna Analyzer. This is how I...
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MFJ-259B,Antenna Analyzer,Repair |
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This is a video of the Lindsay/Gingery coil winder that I built a ways back. It makes nice universal wound coils as well as solenoids. It is basically the Morris coil winder that was popular in the early years of radio.
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Tech Coil Winder Ham Radio Gingery Morris Tech |
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Yup, there's even a video of THIS! Amazing, soon we'll see people opening up utility bills on youtube. Anyway, if you've always used RG-8 or RG-213, this is a nice step right past LMR-400 and into the real stuff. This is the last step before Heliax. The difference w/ 600 Vs the first...
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People Radio coax feed line. People |
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This is one of my 144Mhz Mosfet amplifiers with Freescale MRF6VP2600H. This is a 49V Ldmosfet amplifier for 144Mhz which easily puts out 500 Watt in linear service.
The amplifier exhibits a gain of around 20dB and noteable gain compression sets in above 500 Watts of output power.
Not shown in...
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Tech MRF6VP2600H MRV6V2300 MRF6V4300 Tech |
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