[Ham-Mac] VHF Path Loss Capability Calculator

[James Duffey]

Rich - Here it is.

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You will need MathPad to run it. If you don't have it you can get it  
from the University of New Hampshire site I posted earlier. MathPad  
has a good help feature if you haven't used it before. Just change the  
appropriate entries to what your station capabilities are. You need to  
push enter for it to calculate. That is enter, not return. It always  
takes me a bit to figure this out.

You probably should read the QST article I reference in the work sheet  
as well.

Do you rove? If so, I would love to see pictures of your setup. I can  
reciprocate.

Let me know how this works for you. If you have questions, or have  
trouble getting it to calculate, let me know. I am new to writing  
software for others and it is likely to have problems I don't see.

Keep in touch. - Duffey


On Mar 9, 2008, at 3:10 PM, Richard Cincotta wrote:

>
> James,
>
>   I'm interested.  Could you please email the Mathpad program to me.
>
> Much thanks for making it available,
>
> Rich, KI4FW
>
> ----------------------------------------
>> From: JamesDuffey at comcast.net
>> To: Ham-Mac at mailman.qth.net
>> Date: Sat, 8 Mar 2008 21:38:46 -0700
>> CC: JamesDuffey at comcast.net
>> Subject: [Ham-Mac] VHF Path Loss Capability Calculator
>>
>> If there are any VHF weak signal enthusiasts out there, I have  
>> written
>> a small MathPad worksheet to assist in calculating your station's
>> capability. If you know the path loss for the station you want to
>> work, you can also calculate the expected signal to noise ratio over
>> that path.
>>
>> Let me know if you want a copy and I can email it to you. MathPad  
>> is a
>> free worksheet based mathematical calculator available from the
>> University of New Hampshire. I use it for a lot of calculations and
>> find it much easier to use than excel. Even if you are not interested
>> in VHF, you might be interested in MathPad.
>>
>> I recently discovered the SPLAT! web site that is an online version  
>> of
>> the Linux program SPLAT! by John, KB2BD. SPLAT! calculates the path
>> loss for any frequency between 20 MHz and 20 GHz between any two
>> stations using the Longley-Rice Irregular Terrain model. That was
>> inspiration for me to calculate my rover stations capability more
>> precisely and hence I wrote the worksheet. - Duffey
>>
>>
>> --
>> KK6MC
>> James Duffey
>> Cedar Crest NM
>>
>>
>>
>>
>>
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--
KK6MC
James Duffey
Cedar Crest NM