[1000mp] ARRL REVIEW ROOFING FILTER

[D. J.]

Dirk,

Here are some numbers:

MKV noise floor before the INRAD roofing -123 and after -130

Blocking at 20 khz spacing before 130 db   after 146 db
5 khz spacing before 105 db after 130 db
1 khz spacing before 104 db after 106 db

IMD dynamic range 20 khz spacing before 88 db after 93
2 khz spacing before 69 after 79
On Dec 23, 2004, at 10:51, ON4ADZ wrote:

The report says "improvement is notable".

  I have it installed in my own MKV and It's a noticeable improvement 
without affecting the normal SSB audio.  AM even sounds ok to my old 
ears.  I highly recommend it.

73
Dale, K9VUJ


> Dear
>
> I am intrested in a summary of this arrl only member review.
>
>
> With thanks,
>
> ON4ADZ
> dirk
> on4adz at skynet.be
>
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