[Boatanchors] Radio transmitter ranges

[fkamp at comcast.net]

William L Howard wrote:
> 
> I was asked by an overseas contact about US Army TMs use of the term
> mile for a radios range  He asks " I  mean,  Is TM indication of "mile"
> based on "land mile"  or  "sea mile" ????
> One land mile is around 1.6Km. and One sea mile is around 1.8Km."
> 
> I would assume that means land mile but admit I could be wrong. Do any
> of you know for certain which range is used?
> 

I think that TM is an unrealistic term.  Range
varies with conditions, terrain and a multitude of
other factors.  You would not expect a signal to
completely dissappear suddenly if TM is exceeded. 
So if it is land mile or sea mile does not seem to
be a difference worth noting.

Regards,
Frank Kamp
K5DKZ