Dual pol means 19 x 19 or whatever. There are essentially two separate antennas (electrically speaking) and their gains do not affect each other.
Not the same as using a combiner or splitter. From: Christopher Gray Sent: Tuesday, July 11, 2017 12:22 PM To: [email protected] Subject: Re: [AFMUG] Connecting Antennas For Higher Gain? When a panel antenna is rated, is it rated for total gain when it is dual polarity? Specifically, if a panel is listed for 19 dBi dual polarity, do they really meany 2x 16 dBi? I found some 15.5" 19 dBi single polarity antennas... if I use two of those (one horizontal and one vertical), is that the equivalent of a 19 dBi dual polarity antenna or 22 dBi dual polarity antenna? -------------------------------------------------------------------------------- On Tue, Jul 11, 2017 at 1:07 PM, Chuck McCown <[email protected]> wrote: He is limited in area he can use: 16” x 64” From: Jaime Solorza Sent: Tuesday, July 11, 2017 11:04 AM To: Animal Farm Subject: Re: [AFMUG] Connecting Antennas For Higher Gain? Well there are 8 ft grid dishes with 26 to 28dB of gain....what about one of those new horns? Not sure if they exist at 2.4 Jaime Solorza On Jul 11, 2017 11:01 AM, "Chuck McCown" <[email protected]> wrote: Most yagis top out at about those gains. And that is close to the gain where panels start to have diminishing gains. So two of the largest dishes you can get away with is probably your best choice. From: Christopher Gray Sent: Tuesday, July 11, 2017 10:57 AM To: [email protected] Subject: Re: [AFMUG] Connecting Antennas For Higher Gain? I take it back, it is actually a 17" dish (L-Com HG2418DPD) that they rate at 18 dBi. On strict numbers, the best sectors I've found are in the 17-17.5 dBi range, so I just stopped looking. I'll check again. This is a steeple with minimal visibility allowed, but I may be able to put a yagi inside facing outward. I'll take some measurements and see what might fit. ---------------------------------------------------------------------------- On Tue, Jul 11, 2017 at 12:03 PM, Steve Jones <[email protected]> wrote: Can you go outward with a yagi, or stack of them like Jaime always posts? On Tue, Jul 11, 2017 at 10:30 AM, Chuck McCown <[email protected]> wrote: Real world result will be lower due to transmission line and combiner losses. 16” dish at 2.4 G sucks. I’ll bet you can get a sector that will fit that space that will have more gain. From: Christopher Gray Sent: Tuesday, July 11, 2017 9:20 AM To: [email protected] Subject: [AFMUG] Connecting Antennas For Higher Gain? I have a location with a tall space available for an antenna (About 16" wide x 64" tall). I'm currently running ePMP 2.4 GHz PTP there with a ~16" dish, but I would like more gain. What is the best way to get more gain if I can only go taller? Can I get a second dish and mount it above the first and really gain 3 dB, or will the real world results be lower? Thank you - Chris
