Re: [amsat-bb] Help FT-847 and HEIL ...

["Jay Rutherford" <w1emt@xxxxxxxxxxxx>]

Greetings,

The resistors are actually 2.2 ohm ones. They were added as an 
afterthought during earlier production as tacked-on leaded 
resistors. Didn't even show up on the schematic of rigs well into 
1998. Now they're using chip resistors.

I found that replacing the 2.2 ohm ones with 10 ohm ones gave me 
better matching between the speaker and phones. One problem 
with this rig is that certain tones (monitor, sidetone) are set only via 
menu, so there will always be an irritating mismatch unless you 
get a reasonable match on the voltage divider on the board.

This is discussed in some detail on the FAQs page of the Unofficial 
FT-847 web site. 

http://www.en.com/users/rayd/ft-847/wwwboard/wwwboard.html

73, Jay


W1EMT in Waterbury Center, Vermont, USA
GRID FN34 Email: W1EMT@AMSAT.ORG
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