To: | [email protected] |
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Subject: | Re: LF: 500 kHz WSJT JT4A |
From: | Andy Talbot <[email protected]> |
Date: | Thu, 21 Jan 2010 22:29:38 +0000 |
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Ah...
I wonder.
Jim's DT setting for your sigs is around +2 seconds. Which means in the opposite direction it would be -2s. This is a bit marginal. The WSJT modes were designed originally for EME, and I think the acceptable time window is assymetric, being around 2s negative and up to 6s positive to allow for the EME delay.
But if you're decoding JT65A on HF all OK, not too sure - depends if it has the same time-search margin. Would have thought it does. Unless Jim's timing is out.....?
Just a thought. WSPR is probably more tolerant of timing and it certainly doesn't need to be assymetric in its search.
2010/1/21 Gary - G4WGT <[email protected]> OK Andy, |
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