Sounds logical – a 3’ dish at 2° would be down about 10 dB and at 3° about 20 dB according to the pattern
From: Af [mailto:[email protected]] On Behalf Of Jaime Solorza Sent: Wednesday, March 04, 2015 12:14 PM To: Animal Farm Subject: Re: [AFMUG] Smart guys on lost question Hum...I have always used it this way and have good results. I know from experience that "funny things" happen above 10GHz...guess all this new fangled stuff is showing my age. but I still hold that monopole moves just enough to affect stability of link. That's my story and I am sticking to it.. Thanks gents....I feel more confident for tomorrows presentation. Jaime Solorza Wireless Systems Architect 915-861-1390 On Wed, Mar 4, 2015 at 10:04 AM, Hardy, Tim <[email protected]<mailto:[email protected]>> wrote: The urban area figure you’re using includes clutter – not applicable to a los microwave path. From: Af [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Jaime Solorza Sent: Wednesday, March 04, 2015 12:00 PM To: Animal Farm Subject: Re: [AFMUG] Smart guys on lost question Wow ..close... I come up with 132.89 dB FSL and 143.41 dB urban area FSL ..so I guess if I back out the 2dB loss I am within 1.2dB of the calculations sent to me. Okay i am close. Cool...I can still add and subtract..yeah me! Jaime Solorza Wireless Systems Architect 915-861-1390<tel:915-861-1390> On Wed, Mar 4, 2015 at 9:53 AM, Chuck McCown <[email protected]<mailto:[email protected]>> wrote: I have never had problems using simple free space path loss for these frequencies. I doubt there is significant cable or waveguide loss. Dragonwaves mount to the antenna and the gain of the antenna is at the interface. 96.6 + 20logD + 20log F Where F & D are GHz and Miles. 96.6 + 10.5 + 25.1 = 132.2 dB From: Jaime Solorza<mailto:[email protected]> Sent: Wednesday, March 04, 2015 9:31 AM To: Animal Farm<mailto:[email protected]> Subject: [AFMUG] Smart guys on lost question Hello Smart Dudes on the list: Running a 3.348 mile path for 18 Ghz Dragonwave link to compare what someone else came up with. I am wondering if they used just unfaded free space loss calculation and coming up with a figure 10dB better than mine, I am using unfaded urban area free space loss for mime. I use just free space loss we are within 3db of each other. I added 1 db of cable loss since I do not know if waveguide was used or many other details. I will get all that information on site. I have always engineered paths on conservative side since the start. What are your thoughts Hobson? Thx Jaime Solorza Wireless Systems Architect 915-861-1390<tel:915-861-1390>
