Kantronics KAM Operation Manual

Also see for KAM: Manual Command manual Instruction manual Installation manual

Kantronics KAM Operation Manual Manual pdf 36 page image

WEFAX32LOCATION FREQUENCIES (MHz)Halifax, NSNorfolk, VASan Diego, CAMobile, ALSan Fran, CAWashington, DC4.275, 6.630, 9.890, 13.5108.080, 10.865, 16.4108.646, 17.4109.1584.346, 8.682, 12.730, 17.1514.795, 10.185, 12.205, 14.672In addition, many of the frequency guides for sale by various radio equipment suppliers list WFAXstation frequencies.Tuning WEFAX Signals on HFAs mentioned earlier, WEFAX broadcasters use an 800 Hertz shift FSK format, using mark andspace frequencies of 1500 and 2300 Hertz respectively. These tones, like voice broadcasts, areused to modulate the station RF carrier. You can tune these signals with your standard 1200 baudPacket modem by tuning 1.7 kHz below the published frequency in upper-sideband (USB). Forexample, with your HF transceiver or receiver set to USB, turn the dial until the frequency readoutshows 8078.3 to receive NAM (the Norfolk US Navy Fleet Weather Service transmitting on 8080kHz.)Receiving WEFAX TransmissionsTo receive WEFAX you need to connect an audio cable from your HF receiver to the audio input ofyour TNC. The KPC-4 uses Port 2 and the KAM uses the VHF port for receiving WEFAX. You shouldconnect an audio cable from the audio output jack of your HF receiver to the correct audio inputpin of the KPC-4/KAM to receive the WEFAX signal. With the KAM you can connect the audio fromyour HF receiver to the VHF and HF ports at the same time and use the bargraph tuning indicatorto tune your WEFAX station.For the dual port communicators, you will need to set the MAXUSERS to 0/1 and for the single portunits, set MAXUSERS 1 before starting WEFAX reception. Be sure to read the documentation thatcomes with your WEFAX program to determine how to use it.All of the programs available from Kantronics will require, that you set MAXUSERS as listed aboveand each of them will issue the proper WEFAX command to start the reception of the image. Theprograms will work best at higher ABAUD rates and we suggest 9600 for the PC and Macintoshbased programs, and 1200 for the Commodore 64.