Path Loss 101

[Terry N4TLF]

No problem Dick, it’s not like you are heading to Mars or anything.....
Terry, N4TLF


From: Phil via Tacos 
Sent: Thursday, March 17, 2016 1:54 PM
To: Tacos AMRAD 
Subject: Re: Path Loss 101

All the years I drummed into my students ad nauseam: "Units! Units! UNITS!" 

Phil M1GWZ (in old money)



On 17 Mar 2016, at 17:24, w3hwn at comcast.net wrote:


  Duh!  This paper gives distance in kilometers; I was thinking miles.  Teach me to read more carefully.

  Dick


------------------------------------------------------------------------------

  From: w3hwn at comcast.net
  To: tacos at amrad.org
  Sent: Thursday, March 17, 2016 1:19:24 PM
  Subject: Path Loss 101


  http://electronicdesign.com/blog/wireless-101-basic-physics-radio?NL=ED-001&Issue=ED-001_20160317_ED-001_502&sfvc4enews=42&cl=article_1_b&utm_rid=CPG05000000265010&utm_campaign=5427&utm_medium=email&elq2=12f9c87fc7fb48d38e0a6914011d57c4

  I just read through this and haven't researched it.  Back in the dark ages when I was designing mirowave systems for
  a liviing, FSPL was given as 36.6 + 20 log D + 20 log f.  This paper gives a different value. I don't know why, since the
  physical constants haven't changed, and maybe some day I'll look into it.

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