Colin,

You are correct.  This one I think just crunches the basic numbers and 
gives you a text output of the distance.

Dave Marthouse N2AAM
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On 1/2/2016 3:47 AM, Colin McDonald wrote:
> that's a bit of a tall order if you are looking for something that gives
> some kind of textual representation of the lines and colors on the map the
> way most calculators do.
> What kind of info would you want from this kind of calculator?  Where you
> would enter coordinants of each station and then ask the calculator to spit
> back a yes or no answer to weather this is a practical communications path?
> The way all the calculators that I know of are set up is to show a foot
> print map, and different color representations of fixed station, mobile and
> handheld coverage out from a specific point.
> I'm not sure anything exists that will give you some kind of text feedback
> if you plug in a fixed point or something and tell you what the max range
> is...there are allot of variables involved in that such as turraine, height
> of the transmitting antenna and height of the receiving antenna, power
> output, antenna gain and of course frequency.
> Altitude, weather and humidity also play factors in VHF and UHF line of
> sight communications.  In perfect conditions, line of sight is nearly
> unlimited on both frequency bands.
> IE satellite communications is essentially line of sight without any RF
> sucking obstructions and those are up to 13000KM away.
>
>
> 73
> Colin, V A6BKX
> -----Original Message-----
> From: Jim Gammon
> Sent: Saturday, January 2, 2016 1:29 AM
> To: [log in to unmask]
> Subject: Re: Accessable VHF/UHF Line of Sight Calculator
>
> Oh thanks Dave, I just couldn't imagine what kind of calculator
> it might be.  I was thinking it was a hardware box like a
> Calculator you do math with.  73, Jim
>
> ----- Original Message -----
> From: Dave Marthouse <[log in to unmask]
> To: [log in to unmask]
> Date sent: Sat, 2 Jan 2016 02:48:58 -0500
> Subject: Re: Accessable VHF/UHF Line of Sight Calculator
>
> Jim,
>
> This calculator will plot the line-of-sight signal distance
> between two
> stations on VHF or UHF.  In other words the typical non-enhanced
> communications path over which the two stations can have good
> reliable
> communication.
>
>
> Dave Marthouse N2
> [log in to unmask]

-- 
Dave Marthouse
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