Wx-Fax on your computer requires a SSB
(single side band) radio
receiver, a patch cord from radio headphone jack to computer microphone input and some SW to turn sound data into a picture. Assuming you can figure out the fax transmission
schedule and how to tune the SSB radio.
My radio: Sangean ATS-909 and Radio Shack DX-398
Some tech stuff from internet
First at all you need a Single
Side Band (SSB) Receiver, tune in to a Fax
signal, in the Upper Side Band (USB), at a frequency 1.9 KHz lower as given in theFrequencies lists.
Example to tune in Northwood on 11.086.5 KHz set your Receiver to 11.084,6 KHz.
The most Fax transmissions are send with a LPM (RPM) of 120 and a IOC (sometimes called Module) of 576.
Only stations with Russian equipment
sometimes use RPM
60 or 90 and sometimes a IOC of 288.
Photofax transmissions such as from north Korea
60 and a IOC 352 with gray tones, and satellite
rebroadcast use also RPM 120 IOC 576, with gray tones (4 or more bit Depth)
decoding best way is to decode with Black and White (2 bit Depth).
The Start-tone is 95 % black and 5 % white with tones with a duration of 15 to 20 seconds (called phasing) (300 Hz), the stopsignal is 450 Hz, and this is called Automatic Picture Transmission
Now you should heard the typical "Scratch" sound from a Fax signal, with white-tones are send with 2300 Hz, and black-tones are send with 1500 Hz.
If you use Software
for decoding Fax transmissions, use B&W with 2 bit Depth
for the B&W weather charts