I also lost BS 170 in a QDX unfortunately when it failed it put 12V on the driver (74ACT08) and killed it, so I had to replace it.
Hopefully Hans will eventually get protection against high SWR into a not too distant firmware upgrade.? I would also like to see a low power mode for antenna tuning.? I do have an external 50 ohm attenuator that allows safe tuning.
