[Kenwood] RE: ssb filters for my 850

[Hsu, Aaron (NBC Universal)]

Yash,

The question about what filters to get for the '850 comes up a couple
times a year.  If you dig through the archives, you'll find many
detailed responses.  Below is a post I made not too long ago.  If you
did further back in the archives, you'll find more details.  If I can
get a chance, I'll e-mail what I can from my e-mail archives.

For reference, you don't have to use filters made by Kenwood.  The
filters mentioned below are custom manufactured for InRad
(http://www.qth.com/inrad) - arguably the *best* filters you can get for
most rigs.  And, you don't have to follow the "labels" on the filters
slots - any bandwidth filter will fit any slot for that particular I.F.
So, you if you want, you *can* put a 500Hz filter in the slot marked
"1.8K" - you just need to remember that the filter is 500Hz and not
1.8K.

73!


  - Aaron Hsu, NN6O (ex-KD6DAE)
    {nn6o}@arrl.net
    {aaron.hsu}@nbcuni.com
    No-QRO Int'l #1,000,006
    . -..- - .-. .-   ".... . .- ...- -.--"
 

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My two '850's have the following...

Rig #1:
8.83MHz IF: Inrad 2.1K and Kenwood 500Hz
455KHz IF:  Inrad 2.1K

Rig #2:
8.83MHz IF: Inrad 2.1K and Inrad 400Hz
455KHz IF:  Inrad 400Hz

You can get a general idea of how they are setup, mode-wise.  Cascade
the filters and use slope tuning for narrower bandwidths, if necessary.
Though I don't do much CW, I've tried and found 270Hz filters a bit
narrow.  The cascaded 400Hz + slope tuning works well, when needed.
Cascaced 2.1KHz + slope tuning (esp turning "up" the low-cut) works well
for me during phone contests.

73,

  - Aaron Hsu, NN6O