[Kenwood] TS-870 Noise Blanker mod

Fri, 16 Aug 2002 06:29:15 +0100

Hello guys,
There is some low effectiveness of Noise Blanker (NB) function
 in TS-870 especially when AIP is ON.
You can improve it by means of this simple modification.
It is necessary to increase resistor R331 in IC-9 comparator
circuit (RF unit) from 680k up to 3M. This enables to essentially
enlarge NB adjustment range.

73, Vladimir ("Bob")  UT1IA  =  EO1I
http://www.qrz.com/ut1ia/
http://www.qsl.net/ut1ia/