The urban area figure you’re using includes clutter – not applicable to a los microwave path.
From: Af [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 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>
