[1000mp] Bonus Mod Recommendation

[Dean Fewkes]

I did the "Bonus Mod" AKA "K9AN Mod" this weekend and I would like to =
share that I am very pleased with the results. Prior to the mod there =
was excessive audio hiss on CW with narrow filters when not using the =
EDSP CW Demodulator. The EDSP CW Demodulator has a bandwidth that ranges =
from 300 Htz to 1500 Htz and that is why the hiss is not really =
noticeable when using the EDSP CW Demodulator.  I did not like using the =
EDSP CW Demodulator because it is too narrow banded for me when tuning =
for signals. With the mod installed I can keep the EDSP CW Demodulator =
off and have a wider bandwidth available without having the hiss when =
using the narrow filters.

=20

BTW, this does not mean that I turn off the main EDSP (menu 0-9), I just =
turn off the EDSP for CW Demodulation (menu 7-7). =20

=20

This mod consists of adding a 0.047 uF capacitor across C3015 on the =
audio board. I did this on the top of the board so it was not even =
necessary to remove the board.

=20

I have not done the IF hiss mod and I have never noticed a need for it =
on my particular radio.



I hope that this is helpful to any who may experience this issue.

=20


--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---