Path Loss 101

[Phil]

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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