[Moon-net] [Moon] 3XT1

[Joe Taylor]

Hi Kjell,

Kjell Jarl (SM7GVF) wrote:

> I read that I have to clear the grid box in JT65(?) to take full 
> capabilities of WSJT (clear text) for this expedition.
> Are the clear text messages not clear text if I enter this (grid) 
> information? I have been using clear text messages many times, without 
> knowing this limitation, is it true? I have also seen truncated or 
> distorted clear text messages without understanding why. Maybe Joe could 
> clarify this?

If you have not gained sufficient familiarity with WSJT to use the 
optional decoder features effectively, just turn them off.  There is 
little reason for you to be using them, anyway, with your FB station.

A JT65 plain-text message is truncated for only one reason: if the 
transmitting operator tries to send a message with more than 13 
characters, only the first 13 will be sent.

> My conspiratory SM7GVF wonder: What if I clear the grid box and only 
> have one call sign (the partner) in call3.txt? Are my chances of a QSO 
> increased then? Should I perform this for every new station to increase 
> my capabilities?

Certainly not.  If you want to gain better understanding of how the JT65 
decoder works, and to have clear answers to the questions you pose, your 
best course of action is -- yes, to read the documentation -- and then 
make tests for yourself.  I have made this easy for anyone to do, under 
carefully controlled conditions, by using one of these options:

1. The stand-alone simulator program SimJT.exe
2. The "simulator mode" built into all recent versions of WSJT.

These things are described on the WSJT web page.

	-- 73, Joe, K1JT