[Yaesu] FT-1000D PIN Diode Mod

[Walter Fairclough]

Looking for the details for carrying out the pin diode mod to the FT-1000D.
Tried to find out the service bulletin number and diode availability from
Yaesu but no response. I understand the 1SS83 diodes can be replaced with
1SV154 but not sure which diodes need to be replaced. Do all of the 1SS83
diodes in the BPF unit require replacing or only certain ones?

Any info would be much appreciated.

Thanks

Walter  VE3EN