Hi Alan
Finally got the Ensemble RX fixed. Used PE0FKO v15.15 (latest), no issues so it seems backwards compatible with v15.12.
Built a Ponyprog serial programmer and used avrdude v7 on Linux Mint 19.3 to programme the ATTiny85.
All seems to work fine. The sensitivity is a few dB down on 10m, but can see the band noise from the G5RV so no problem.
Thanks for the support.
73
Nick
G3VNC