reading quickly but sounds right to me Sent from my iPhone
> On Mar 7, 2015, at 9:17 PM, George Skorup (Cyber Broadcasting) > <geo...@cbcast.com> wrote: > > I thought the whole idea of slant was chain equalization and certain types of > multipath are handled better. Take the PMP450 for example. On 5GHz (H/V), if > we get a strong interferer on v-pol (all the FSK out there) and V SNR is 15 > while H SNR is 30, you get MIMO-A. With the slant, now your V pol interferer > affects both - and + 45 equally, so you might get a SNR of 18 on both > polarities, but you're still getting MIMO-B. Dual 16QAM is better than single. > >> On 3/7/2015 7:14 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: af@afmug.com >> 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" <je...@richardson.bz> 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:af-boun...@afmug.com] On Behalf >>> Of Josh Luthman >>> Sent: Saturday, March 07, 2015 4:41 PM >>> To: af@afmug.com >>> 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 <je...@richardson.bz> >>> 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:af-boun...@afmug.com] On Behalf Of Josh Luthman >>> Sent: Saturday, March 07, 2015 3:50 PM >>> To: af@afmug.com >>> 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" <je...@richardson.bz> 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:af-boun...@afmug.com] >>> On Behalf Of Jon Langeler >>> Sent: Saturday, March 07, 2015 3:20 PM >>> To: af@afmug.com >>> 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 <je...@richardson.bz> 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! >>> >
