2017年8月3日 · I've been looking at some radios that operate in the UHF range and have been seeing multiple bands listed in the specifications. It's usually listed similar to this: UHF1: 400-470MHz; UHF2:450-520MHz; UHF3: 350-400MHz; UHF5: 806-941MHz I thought maybe the numbering scheme was just an internal...

2024年12月23日 · The trick with VHF/UHF antennas, and this ties into your original question, is elevation. Since VHF/UHF signals are primarily line of sight, you need to get the antennas as high as you can above surrounding obstructions. Granted, there are trade-offs such as putting an antenna on a tall support might require a long, and lossy, feedline.

2023年10月8日 · 470-512 TV, UHF-T band in some areas. 512-614 TV 614-746 various cellular type services 746-769 FirstNet (base) 769-776 Public safety LMR (700 MHz base) 776-799 FirstNet (mobile) 799-806 Public safety LMR (700 MHz mobile) 806-821 PLMR (mobile) 824-851 various cellular type services (mobile) 851-866 PLMR (base) 866-896 various cellular type ...

2023年10月28日 · Many antennas are described as covering a spread of UHF frequencies (e.g. 420-470 MHz), while a few are advertised as intended for GMRS use. Is the “GMRS Antenna” really different (more narrowly tuned) or is this just advertising’fluff’?

2024年7月1日 · If its just VHF/UHF then a dual band VHF/UHF mobile whip with wide bandwidth and a little gain on a ground plane mount should easily outperform the Moonraker thing. Maybe a Comet CA-2X4SR and a Larsen style ground plane NMO with four radials.

2025年2月8日 · I am looking at the new FTM-150RASP as maybe my next VHF/UHF mobile. The features are impressive, but I cannot figure out a couple of things that interest me. I downloaded the programming software from Yaesu, but it is very buggy. I am interested in the expanded receive. Besides using it in...

2024年9月29日 · Ditto. It's been a while since I've owned any ham gear, but when I did, I'd often run just a VHF 1/4 wave whip since that's what I used most of the time. On 70cm, they operate as a 3/4 wave antenna. The radiation angle on UHF shoots a bit above the horizon, but not a big deal for most users.

2012年5月15日 · VHF and UHF repeaters are listed in megahertz, and 600 kilohertz is 0.6 MHz, so you add or subtract 0.6 to the repeater frequency as needed to get the transmit frequency. UHF 70 cm is a little more uniform. Repeater outputs will always be between 440 and 445 MHz and always a plus offset (your radio transmits 445 to 449.975) The UHF offset is 5 MHz.

2025年1月16日 · The Diamond antenna is a good bit of kit, although you may find that the band pass filter will reject the UHF military air band. Regarding receivers specifically for airband, many general VHF/UHF comms receivers and scanners will work very well for you. As has been mentioned the BCT15X is a decent set and not terribly expensive.

2013年4月5日 · Hawkeye, are you talking about a VHF or a UHF radio? On the 2m amateur band, you will find that repeaters in the 145.110 to 145.490 MHz segment are generally spaced every 20kHz while repeaters in the 146.610 to 147.390 MHz segment are generally spaced every 15kHz. There are exceptions to this "rule", e.g. Michigan where they are spaced every 20kHz.