Failure to TX

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Last seen: 8 years 1 month ago
Joined: 2012/01/01 - 00:27
Failure to TX

I'm running WSPR through a Signalink USB into an Icom 718. It was working fine at first but after a week or so ( I'm new around here) TX became intermittent....
When I set up for TX 20% it will happily rx for hours but whenever 'tx' appears on the screen nada at the radio....
Then after half an hour or an hour or whatever it will start transmitting.

No problems when operating the same computer/cable/Signalink/radio with JT65-HF or PSK.

Any thoughts on 'why it is so'