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- I have added CWID to my JKISS and JKISSP EPROMs. The Callsign to be sent
- is patched into the EPROM image with the program PATCHID, which takes two
- parameters, the required callsign, and the file to patch (either JKISS
- or JKISSP). Note that the specified file is overwritten, so I suggest you
- make a copy of the original first.
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- PATCHID G8BPQ JKISS - Note call must be in upper case
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- The CW patttern which will be sent is displayed on the screen - please
- check it, just in case my translate table is wrong!
-
- The ID is sent after one minute, then at 29 minute intervals, with a dot
- length of 60ms. If my calculations are correct, this equates to 20 WPM
-
- The ID is send in AFSK (assuming a normal AFSK modem), but because of the
- hardware design it is not possible to control which tone corresponds to
- mark or space - it depends on what was sent just before the ID starts.
- If you are using a modem with a scrambler (eg G3RUH), then the system
- wont work - the two tones will sound the same. I'd like to know if a
- CWID facility form RUH modems would be useful - if there is a significant
- demand I'll see if I can find a solution. A simple on-off keying may be
- possible, but would depend on the PTT characteristics of the TX. If you
- have a better idea, please let me know!
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- The normal SLOTTIME/PERSISTENCE code is used to minimise collisions with
- other stations (hence the interval of 29 mins, allowing a bit of time for
- conjestion, without going over the statutory 30 mins interval).
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- John Wiseman, G8BPQ
- 4 Sept 1990
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