This program is free and very useful for HAMS,CB,SWL communicators...
DX Toolbox - Shortwave / Ham Radio / HF Radio Propagation Tool
DOCTOR/795
DX Toolbox - Shortwave / Ham Radio / HF Radio Propagation Tool
DOCTOR/795
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PROPAGATION TOOL
- Thread starter doctor
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Yeah but it's a time limited program without all the features unless you buy it therefore it is not free unless you don't want to use it beyond the free trial period.
Here is a free HF propagation program that is really free. I think those other posts were just link spam.
But if you ask me, all propagation programs are basically rubbish. You can't forecast propagation just by inputting a couple of solar numbers. I think propagation programs are useful to illustrate to newbies how in broad terms propagation changes from band to band from hour to hour, month to month and so on. But there are good days and bad days that these programs can't predict, which is why the DX will always be worked by the guy who decides to switch on his radio regardless of what the propagation programs say.
But if you ask me, all propagation programs are basically rubbish. You can't forecast propagation just by inputting a couple of solar numbers. I think propagation programs are useful to illustrate to newbies how in broad terms propagation changes from band to band from hour to hour, month to month and so on. But there are good days and bad days that these programs can't predict, which is why the DX will always be worked by the guy who decides to switch on his radio regardless of what the propagation programs say.
I agree. I remember pondering over the propagation predictions in CQ magazine which would have had to been compiled at least two months in advance. Sometimes they were spot on and other times way off. If the sun decides to burp on an otherwise slack day they things can change in a matter of hours. I like the reports from SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids especially the updates aout solar flares and sunspot numbers etc. that's all I ever bother with besides actually turning the radio on and checking propagation.
Propagation Tools
The Real Propagation Tool is here.
VOACAP Quick Guide: HF Propagation Prediction and Ionospheric Communications Analysis
The Real Propagation Tool is here.
VOACAP Quick Guide: HF Propagation Prediction and Ionospheric Communications Analysis
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@ Geoexplorer69:Coax question. I just put up a new Sirio monsoon base antenna with 100’ of rg8u coax testing with myMFJ antenna analyzer shows 1.4 swr at 26.965mhz and a 1.1 at 27.405 mhz . When I checked the ohms it’s steady a 30 ohms across the entire bandwidth.
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