[Yaesu] FT-1000 PIN Diode "Mod"

[n1eu@hotmail.com (Barry N1EU)]

As an owner of an early FT-1000, I was wondering if there's any information 
available that gives a good technical explanation of the advantage to 
changing to PIN type diodes for the RF unit's BPF switching.  How is the IMD 
seen with the non-PIN diodes prevented with the PIN diodes?  Was the circuit 
change ever published as a service bulletin that is accessible?

Thanks for any help & 73,
Barry  N1EU




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