But now you see both H and V, and the received signal is the sum of them, which adds 3 dB. Whereas before you saw only H or V.
From: Josh Reynolds Sent: Saturday, March 07, 2015 8:15 PM To: [email protected] Subject: Re: [AFMUG] Typical improvement when using 45* slant I have no idea what you are trying to say. Take your "H", turn it 45 degrees. You now see "existing" "H" -3 dB less. Take your "V", turn it 45 degrees. You now see "existing" "V" -3dB less. Since the antenna on the far side of you in a PtP or PtMP scenario is also a 45deg matching slant, there is no loss in received signal from that transmitter. -- Josh Reynolds CIO, SPITwSPOTS www.spitwspots.comOn 03/07/2015 04:14 PM, Ken Hohhof wrote: I’m not sure that’s true unless the AF does some sort of noise cancelling algorithm, which maybe it does. But I don’t see where the antennas alone accomplish that. Yes, +45 would see V at –3dB, but it would also see H at –3dB, and assuming they are uncorrelated, the addition puts you right back where you started. From: Josh Luthman Sent: Saturday, March 07, 2015 6:55 PM To: [email protected] Subject: Re: [AFMUG] Typical improvement when using 45* slant Ahh I see what you're saying. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mar 7, 2015 7:53 PM, "Jerry Richardson" <[email protected]> wrote: The slants will be for the AF5X which will see the rockets -3dB less than if the AF5X was on H/V From: Af [mailto:[email protected]] On Behalf Of Josh Luthman Sent: Saturday, March 07, 2015 4:41 PM To: [email protected] Subject: Re: [AFMUG] Typical improvement when using 45* slant Rockets don't decide the slant/linear. The antenna does. So those "HV Rockets" on the 45* antenna aren't HV at all. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Sat, Mar 7, 2015 at 7:25 PM, Jerry Richardson <[email protected]> wrote: I see I’m not ‘splaining myself adequately On a given tower, if I have some rockets (H/V) and I use a 45 degree antenna, I should see additional S/N of x (3dB was my guess) between the two systems. While that +3db would be welcome, I’m not counting it. From: Af [mailto:[email protected]] On Behalf Of Josh Luthman Sent: Saturday, March 07, 2015 3:50 PM To: [email protected] Subject: Re: [AFMUG] Typical improvement when using 45* slant Radios are different, but slant vs pol won't get you different signals. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mar 7, 2015 6:38 PM, "Jerry Richardson" <[email protected]> wrote: Looking to put in an AF5X with the 45deg slant antennas. Was curious if we would see any additional link improvements over the H/V Rockets. I’m just assuming we won’t to error on the side of caution. From: Af [mailto:[email protected]] On Behalf Of Jon Langeler Sent: Saturday, March 07, 2015 3:20 PM To: [email protected] Subject: Re: [AFMUG] Typical improvement when using 45* slant if you have any links with oddball H/V signals, dual slant would level them out a bit to be about the same on each polarity. Sent from my iPhone On Mar 7, 2015, at 12:34 PM, Jerry Richardson <[email protected]> wrote: Looking at using AF5X for a link with the 34dB 45* slants What kind of improvement would you expect to see over standard V/H polarization? +3dB? +6dB? Thanks!
