What's This R-71A Mod ?
 

I have a "new to me" R-71A and in looking it over I find it stock except for
a mod on the Main Board. The mod as far as I can tell... is an added 3.3K
resistor on the negative lead of C88 to the board. This added resistor
isn't in the schematic.... I have searched the web for R-71A mods and can't
find this one.... any idea what it's for ?

The only issue this receiver has is a very "Scotch" "S" meter.... slow when
it does work on a very strong signal and although I calibrated it per the
R147/R142 adjustment procedure it still reads hardly ever..... idea ? I
haven't had a chance to trace that C88 mod... related ?

Mike
--
Michael Melland, W9WIS
Winneconne, Wisconsin USA EN54pc
qrp-l #1656 - qrparci # 9875 - iparc #252
ars #1075 - http://webpages.charter.net/w9wis/