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Author Topic: Airmail Propagation  (Read 251 times)
K4LED
Member

Posts: 13




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« on: October 30, 2005, 11:19:10 AM »

In latest version of Airmail when I look at the propagation chart in the HF Module I see a box called pre-calc.  What does that box do?  Can't find any mention of it in the help files.

Thanks - 73
Karry K4LED
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N4ZOU
Member

Posts: 340




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« Reply #1 on: October 31, 2005, 06:33:46 AM »

Turning the volume up on your transceiver so you can hear the frequency your about to operate on will let you actually hear if the band is open other than trying to use the computer program to calculate if the band is open. Better yet, try using the VFO and manually tune up and down the band and listen to real ham radio so you can tell if the band is open.
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K4LED
Member

Posts: 13




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« Reply #2 on: October 31, 2005, 02:13:09 PM »

Thanks but....the propagaion program works great - - I just wanted to know what the"pre-calc" button deos.
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KB4QAA
Member

Posts: 2340




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« Reply #3 on: October 31, 2005, 07:28:20 PM »

I don't know this piece of software, but some other prop programs use that to allow you to calculate the propagation for times later than the present.  For example 12 or 24 hours in advance.

73,
Bill
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X-WB1AUW
Member

Posts: 559




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« Reply #4 on: October 31, 2005, 10:55:41 PM »

I use W6EL.
Free download.

73
Bob
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