Yep, I think this is the formula for meters and MHz: FSL = 32.5 + 20 log F + 20 Log D
Where: D = Km F = MHz If Gt and Gr were gains, they would be additive – not subtracted, so I’m unclear as to what these actually stand for. From: Af [mailto:[email protected]] On Behalf Of Chuck McCown Sent: Tuesday, March 10, 2015 4:11 PM To: Animal Farm Subject: Re: [AFMUG] Free Space Loss calculator Well do you want to use miles and GHz or meters or feet KHz or or or? This formula may be for meters and cycles per second. That is what the constant does, the 32.44 it adjusts for units. Then the Gt and Gr are the gains of the antennas I presume. From: Jaime Solorza<mailto:[email protected]> Sent: Tuesday, March 10, 2015 2:05 PM To: Animal Farm<mailto:[email protected]> Subject: [AFMUG] Free Space Loss calculator Which one> 96.6 + 20logD + 20log F Where F & D are GHz and Miles. or 20logD + 20log F + 32.44 -Gt -Gr = FSPL where t is tx pwr and r is receiver sensitivity. Jaime Solorza Wireless Systems Architect 915-861-1390
