question for Guy Atkins
 

Guy, tell us the details about your highly modified R-75 !

"the captain" wrote in message
om...
Guy, tell us the details about your highly modified R-75 !

Hi Captain,

I have installed the following modifications in my R-75, and it helped to
have good magnification to work with the little SMD parts:

-Phil's "Phidelity" mod (source: R75 YahooGroup)
-ECSS volume mod (R75 YahooGroup)
-Mediumwave attenuator removal mod (full removal, not the shorted-pads
trick) (R75 YahooGroup)
-Kiwa audio upgrade (a selection of replacement capacitors, polypropelene
dielectric for lower distortion in audio path and DC rails)
-Kiwa 3.5 kHz filter for Synchronous AM (S-AM) mode (note: Kiwa no longer
sells this filter)
-Kiwa Synchronous AM Module
-#320 INRAD crystal filter, 1.8 kHz at 9 MHz
-#322 INRAD crystal filter, 1.8 kHz at 455 kHz
-6 kHz replacement roofing filter in first I.F. (ICOM filter # 9M6A1)

I also have the DSP and voice synthesis modules for the radio, but the
latter is not installed.

I particularly like the way the INRAD filters tightened up the performance
of the twin PBT in the R-75, and the new roofing filter seems to help the
close-in dynamic range when I'm chasing foreign mediumwave DX at the
Washington coast.

regards,

Guy Atkins
Puyallup, WA USA