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Showing results for tags 'band specific'.
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So I'm fairly new to radios. I've had a couple for roughly 3 months and have dove headfirst into all different types of radios. That being said I love scanning frequencies, creating lists for repeaters and other things in my area I'm sure to catch! (Such as I'm fairly sure I have one of the last Wendy's still using 400+ mhz range on their headsets). I was scanning all the preprogrammed frequencies I have in my radio, and one of those included the STARS and DOTS. Brown dot in my area is usually construction workers and crane operators. The STARS and other dots are not usually active, except the uncommon sound of a (water/sewage?) Public worker. That being said, the one frequency that stands out is 464.550, otherwise known as yellowdot. I haven't done muxh research on it, mostly because I love learning from you guys! My question is, why is it that yellow dot of all frequencies in my area is always buzzing... it sounds like my squelch is turned completely off. And it's the only one of the dots and stars that do this. Thanks! Wrvg593
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433 specific antenna working perfectly on MURS ! ? Huh ?
JCase posted a question in Technical Discussion
Greetings everyone, Ok, I don’t claim to understand everything associated with RF. Heck, there’s a lot of it that’s just plain over my head (pun intended). But this particular surprise has me totally baffled. I was several new dual commercial band antennas that I just received in case any tuning was needed and since my mind was set to “dual band” mode I grabbed this inexpensive, lightweight, low power antenna and connected it to one of the Dakota Alert MURS 2 watt base units and decided I should check it also. I don’t mind telling you I couldn’t have been happier with my SWR reading, 1.0-1.1 right out of the package. I had a HUGE smile and thought perfectly, finally found an antenna that needed no tuning, not even a frogs hair amount needed to be trimmed off. I went back to testing the other dual band commercial antennas with several different mobile radios and it wasn’t until I finished and started putting my meters, adapters and various odds and ends away that I realized what I had done. I had connected a UHF only (433 MHz specific) antenna to a VHF transceiver, not only that but I got a picture perfect SWR & power level reading using it n a MURS channel (154.570). My radio tech ALWAYS stressed that I should only use band specific antennas for the band they were designed for and by using a VHF on UHF and visa versa, So, why is this UHF antenna working spot on with a VHF frequency ? I have included a pic of the antenna I’m referring to.