On Wed, May 01, 2024 at 09:55:37AM -0500, Richard Bonica via BVARC wrote: > I am still working on my satellite antenna. My question now is, I have a 2m > and a seperate 70cm antenna, both on the same turret like a set of cannons > on a battleship. I have a baofeng and a kenwood TM-71a radio. Do I need > to put the antennas on a duplexer or since the radio is already dual band > with one input, I am good already? If you want to connect both antennas to one radio you should use a duplexer— that way, the rf knows where to go. I belive that most of those kind of radios are desined to be used with one antenna for both 2m and 70cm, which is what the duplexer makes the pair of beams appear as.
I would recommend, if you don't have a dual-band that can listen to the down while transmitting on the up, to use two seperate radios for the up and the down, that way you can montior your signal into the satellite. Good luck, Scott KI5WLJ
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