This evening I had an unsuccessful JT65B sked on 2m with G4DCV in Aldershot. I was using WSJT 9.7 software. Although I could hear his JT65B tones well (and his CW) I could not once decode his callsign in JT65B despite Paul using 200W. Later I checked with GB3VHF and was easily able to copy callsign and QTH locator in JT65B mode. I shall have to try this mode again until I succeed. I have used JT65-HF successfully on several occasions. Paul could receive me despite me using just 2W to a halo at around 135km.Several times the WSJT 9.7 reported a runtime error and closed the program.
If anyone has any ideas why I did not decode Paul's transmissions please let me know.