[Kenwood] Good Effective NBs

Michael Tope W4EF at dellroy.com
Wed Oct 12 22:11:50 EDT 2005


----- Original Message ----- 
From: "John Geiger" <ne0p at lcisp.com>
To: <kenwood at mailman.qth.net>
Sent: Sunday, October 09, 2005 9:48 PM
Subject: [Kenwood] Good Effective NBs


>I have asked this question before in a different format, but are there any 
>Kenwood rigs that have a good noise blanker in it that also doesn't kill 
>receive?  I live in a pretty noise location >so I need the noise blanker to 
>cut down the noise, but on the rigs I have used recently they also hurt the 
>receive. On CW I can hear loud stations 10khz away or more with the NB 
>on->coming through as a raspy, aurora sounding signal.

>Are there any rigs that have effective noise blankers that won't lead to 
>this increased IMD noises?  Or is that just the nature of a NB and the 
>price you pay for using it?

>73s John NE0P


It's not Kenwood, but the documentation I got with the Inrad roofing
filter for my FT-1000MP MK V claims that the filter doesn't degrade
NB performance, and that it reduces cross-modulation caused by
strong signals that are outside its passband (4KHz) since it is placed
ahead of the NB sampling point.

Maybe you can talk W2VJN into coming up with a similar roofing
filter for the Kenwood TS-950SDX.

73 de Mike, W4EF...................................




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