Title: Re: [wsjt-devel] valid prefixes in JT65
Hi Bill,

Thanks for the explanation.

Searching for this matter, I found the following info. It's the first message, by Joe, K1JT:

https://groups.google.com/forum/#!topic/linrad/rLY4Y4StAbw  

I am not sure, a test with 'jt65code.exe' shows, 'JT65 v1' coding is in use in WSJT-X.

a message "CQ 3D2R/OE1MWW RH97"

Packed message v1 coding 6-bit symbols:  62 32 32 49 38 36 53 42 54 52  5 31

will be sent as "CQ 3D2R/OE1MWW"

and

a packed message in v2   6-bit symbols:  62 35  7 40 18 36 53 42 54 48  1 13

will be sent as "CQ 3D2R/OE1MWW RH97"



73's de OE1MWW
Wolfgang



Thursday, October 12, 2017, 12:03:57 AM, you wrote:

> On 11/10/2017 13:51, Wolfgang wrote:
>> There was a discussion in a Google group about valid prefixes and suffixes that can be used
>> in JT65 - and by the JT65-HB9HQX software.

>> 'jt65code.exe -t' lists all possible variations. Prefix 'A000' to 'ZZZZ' should be possible
>> and they will work by testing them with jt65code.exe.

>> Valid prefixes are listed in thehttp://physics.princeton.edu/pulsar/K1JT/JT65.pdf  document,
>> some 4 char prefixes starting with a digit, or for example, per list 'VK9M' showing
>> other results with jt65code.exe and tested in WSJT-X 1.7 devel 8164

>> But "CQ 3D3R/OE1MWW RH97" results in "CQ 3D3R/OE1MWW" the QRA locator is missing.

>> If I just change it to "CQ AD3R/OE1MWW RH97" or "CQ ZD3R/OE1MWW RH97" it will be sent
>> as typed. Otherwise, the listed VK9M in the JT65.pdf, using it with jt65code.exe gives
>> me instead of "CQ VK9M/OE1MWW JN88" just "CQ VK9M/OE1MWW", the QRA locator is missing in
>> this case. Replacing the '9' with an 'Z' for testing, will be coded as typed.

>> All this is not important at the moment, just, which guideline should be used?

> Hi Wolfgang,

> there are two different types of compound calls supported in WSJT-X,
> type 1 which use the predefined suffixes and prefixes that are shown in
> the help menu and newer type 2 compound calls that support a wider range
> of prefixes and suffixes limited by format rather to a predefined list.
> Both types have limitations on the messages that can be sent. Type 1
> cannot be sent with grid squares in CQ/QRZ and TX1 messages but do
> include both full callsigns in those message types. Type 2 compound
> callsigns can send a grid and full callsign in a CQ/QRZ message but
> cannot send a full callsign with another callsign in other message
> types, instead having to send the base callsign only or a DE
> <full-callsign> message with a report, R+report or 73 message. The User
> Guide contains examples of QSOs with both types of compound callsign.

> 73
> Bill
> G4WJS.

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