WRZM243 Posted April 5 Report Share Posted April 5 Two antennas on the roof for GMRS... one for repeater and one for the base station... how far apart should the antennas be? Quote Link to comment Share on other sites More sharing options...
0 Sshannon Posted April 8 Report Share Posted April 8 On 4/5/2024 at 12:31 PM, WRZM243 said: Two antennas on the roof for GMRS... one for repeater and one for the base station... how far apart should the antennas be? It depends. If you mount them on the same mast with one vertically above the other they can be just a 14 inches (a half wavelength) or so apart. If you place them on the same level then the transmissions from one antenna are much more likely to affect the other. The signal strength goes down by 10 db (a factor of 10) for every foot of horizontal separation. A foot of vertical separation is worth about ten feet of horizontal separation. WRZM243 1 Quote Link to comment Share on other sites More sharing options...
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WRZM243
Two antennas on the roof for GMRS... one for repeater and one for the base station... how far apart should the antennas be?
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