Kenwood TS-870S (TS 870 S TS870S) mods reviews software and diagrams

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Kenwood TS-870S (TS 870 S TS870S)

TS-870S

Programming interface schematics for Kenwood :
Programming software for Kenwood TS-870S (TS 870 S TS870S) :
PDF User Manual for Kenwood TS-870S (TS 870 S TS870S) :
PDF Service Manual/schematics for Kenwood TS-870S (TS 870 S TS870S) :

Mods for Kenwood TS-870S (TS 870 S TS870S) :
   Kenwood TS-870S (TS 870 S TS870S) Improve full break-in operation
   Kenwood TS-870S (TS 870 S TS870S) IF output for MS-230 monitorstation
   Kenwood TS-870S (TS 870 S TS870S) 100W on 160m
   Kenwood TS-870S (TS 870 S TS870S) CW-monitor audio mod
   Kenwood TS-870S (TS 870 S TS870S) Noise Blanker mod
   Kenwood TS-870S (TS 870 S TS870S) DRU-3 records RX-Audio
   Kenwood TS-870S (TS 870 S TS870S) Service Menu Setup Tweaking v1.1
   Kenwood TS-870S (TS 870 S TS870S) external receive antenna switching
   Kenwood TS-870S (TS 870 S TS870S) [CQ-Contest] Collins Filters in Contest Rigs
   Kenwood TS-870S (TS 870 S TS870S) as a contest rig
   Kenwood TS-870S (TS 870 S TS870S) Output Power >100W
   Kenwood TS-870S (TS 870 S TS870S) ALC-Mod.
   Kenwood TS-870S (TS 870 S TS870S) Making super radio
   Kenwood TS-870S (TS 870 S TS870S) S-Meter pin with repeated RX/TX switching
   Kenwood TS-870S (TS 870 S TS870S) Receiver circuit changes
   Kenwood TS-870S (TS 870 S TS870S) Frequency expansion
   Kenwood TS-870S (TS 870 S TS870S) DSP XCVR specs

Kenwood TS-870S (TS 870 S TS870S) technical specifications : Kenwood TS-870S (TS 870 S TS870S) technical specifications

Kenwood TS-870S (TS 870 S TS870S) Noise Blanker mod

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.

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