Review on 📡 TWAYRDIO High Gain Yagi Antenna 144/430MHz, 100W, Dual Band 2M/70cm with UHF Female Connector for VHF UHF Mobile Radio, Two-Way Radio, FM Transceiver – Aluminum Alloy Yagi Antennas by Marc Hawkins

The antenna was assembled fairly quickly. Good that everything is in such a small box. There were no extra screws, so don't lose or tear them off. For testing, I mounted this antenna on a paint pole at the edge of a ravine behind my house, where my TV antenna gets good reception. I can only test VHF but that's where most of the signals I'm interested in are, but if you want to use this antenna on 70cm you'll need an antenna analyzer that can work there or at least a decent SWR meter in your radio. . After checking with my antenna analyzer it turned out to have a resonance at 144.70MHz and has a minimum SWR of 1.3:1 (pretty good). Unfortunately, it has a very narrow bandwidth, so the impedance increases rapidly as you move away from the resonant frequency. I tried to reach the repeater on 145.310MHz and got no response, although I could hear the hello tone and station ID fairly clearly. Maybe nobody was in control then. In any event, the antenna looks well built and should be able to withstand extended outdoor use, but its best use would be pointing and tuning to a specific repeater. (At least I was able to test on 2 meters.) Higher gain usually means narrower bandwidth. So it's a compromise, like every other antenna ever made. Overall this is a good antenna and works great for a fixed frequency like iGate's APRS, but the included 440MHz elements make it more versatile. Antenna for dual band VHF/UHF radio. I suspect you typically see more than one repeater on a tower. So if you point it at a 2m repeater, chances are there's something going on at the same location in the 440MHz band. The best strategy is probably to tune to the center of both bands and then use an antenna tuner.