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Author Topic: HH70A FT8 problem  (Read 1624 times)
WA2VUY
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Posts: 385




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« on: January 04, 2018, 03:25:36 PM »

HH70A is having a problem using FT8, an issue with having two digits after the prefix.  I'm not familiar with FT8, if there is a fix for this please post. I did find the following which seems to indicate that's just the way it is.

"FT8 (and similar protocols) are designed to allow a specific call sign format, noted at http://physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-1.8.0.html#PROTOCOL_OVERVIEW. A call S51XXX can be accommodated, but not S510XXX, or S510<anything>. The call is also 7 characters in size. The rules only allow for calls of up to 6 characters (2 character prefix, 1 character number, up to 3 letter suffix)."

The 70 is for 70th anniversary of the Haitian radio club.
« Last Edit: January 04, 2018, 03:30:03 PM by WA2VUY » Logged
N2RJ
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Posts: 2071




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« Reply #1 on: January 13, 2018, 11:00:34 PM »

I don't think there is a fix, other than sending it as a free message. They would have to omit the grid square too. Possibly the signal report and it would totally break auto sequence.

So I guess for digital contacts they may want to stick to RTTY or PSK31.


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VA3VF
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Posts: 1455




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« Reply #2 on: January 14, 2018, 06:55:47 PM »

I don't think there is a fix, other than sending it as a free message.

Correct! I just happened to check the WSJT list - I'm no longer subscribed, but the archives are public - and there is a recent discussion, a couple of days old, about this.

There is no work around, other than free messages, before it becomes a new protocol, with very different characteristics.
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