[R-390] 8640B new toy here!

[Barry]

Option 3 is Reverse Power Protection.  Mine came with one of the cards necessary for the frequency doubler, but there is additional circuitry required to make that option fully functional.

The gears in mine are cracked but not separated as much as some I've seen.  Still thinking about how I want to make that fix before they get worse.

Good luck with the FM board.  There are a lot of individual boards on eBay but they're pretty high in price and no guarantees.

Barry - N4BUQ

> Is Option 3 the frequency doubler extending the range to about 1 kmc?  
> (kHz)
> 
> The 8640 I have here does not work on FM.  If anyone has a spare FM  
> board, I might be able to buy it and fix my generator,
> 
> Roy