WRPG745 Posted August 25 Report Share Posted August 25 nice build! WSBR383 1 Quote Link to comment Share on other sites More sharing options...
DominoDog Posted September 4 Report Share Posted September 4 I picked up one of the N9TAX single band slim jims for GMRS, it seems to do really well. I would say it probably performs at a similar level to the ones reviewed here. WSBR383 1 Quote Link to comment Share on other sites More sharing options...
WSEN982 Posted September 13 Report Share Posted September 13 Anyone try out either the Hyshikra FB17UV (1.7 meters length) or the FB22uV (2.2 meters length) base station GMRS antennas? I really would like to get at least 7-8db gain. These claim that. Amazon. Quote Link to comment Share on other sites More sharing options...
SteveShannon Posted September 13 Report Share Posted September 13 24 minutes ago, WSEN982 said: Anyone try out either the Hyshikra FB17UV (1.7 meters length) or the FB22uV (2.2 meters length) base station GMRS antennas? I really would like to get at least 7-8db gain. These claim that. Amazon. I haven’t, but is that gain dBi or dBd? RayDiddio 1 Quote Link to comment Share on other sites More sharing options...
WSEN982 Posted September 13 Report Share Posted September 13 that'd be dbi - thanks for catching. Quote Link to comment Share on other sites More sharing options...
WSEN982 Posted September 13 Report Share Posted September 13 Also, just read this on digi.com. Any comments to this? "Also note that antennas with higher gain focus the energy over a smaller area. Digi recommends avoiding the highest gain antennas in most applications because they are more difficult to work with. Recommended antenna gains: Omnidirectional: 3 dBi to 6 dBi Directional: 8 dBi to 11 dBi Note: High gain antennas are of limited use in extending the range in a non-Line-of-Sight (non-LOS) environment. In a non-LOS environment the obstructions contribute more losses to the system than the antennas are able to overcome. Also, the obstructions cause the signals to bounce and arrive at the antenna from different angles so it is desirable to have an antenna with a wide beam width and a lower gain. Quote Link to comment Share on other sites More sharing options...
SteveShannon Posted September 13 Report Share Posted September 13 4 minutes ago, WSEN982 said: that'd be dbi - thanks for catching. What Digi said is exactly right. Gain in one direction is stolen from somewhere else. What are you using the antenna for? Do you expect to turn it to point in a particular direction, such as pointing it at different stations? Or do you want to just receive every station in a circle around you? Wil they all be at the same level as you or will some be higher and some lower? Personally I’m satisfied with a 6 dBi gain antenna on my roof. The repeater that’s 3000 ft higher is still easy to reach. WRXB215 1 Quote Link to comment Share on other sites More sharing options...
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