Kenwood TS-440S (TS 440 S TS440S) mods reviews software and diagrams

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Kenwood TS-440S (TS 440 S TS440S)

TS-440S

Programming interface schematics for Kenwood :
Programming software for Kenwood TS-440S (TS 440 S TS440S) :
PDF User Manual for Kenwood TS-440S (TS 440 S TS440S) :
PDF Service Manual/schematics for Kenwood TS-440S (TS 440 S TS440S) :

Mods for Kenwood TS-440S (TS 440 S TS440S) :
   Kenwood TS-440S (TS 440 S TS440S) IF-10 (RS-232) interface
   Kenwood TS-440S (TS 440 S TS440S) Displays dots on certain bands
   Kenwood TS-440S (TS 440 S TS440S) Circuit Improvements
   Kenwood TS-440S (TS 440 S TS440S) mod for improved receive sensitivity of 0.5 to 1.6MHz
   Kenwood TS-440S (TS 440 S TS440S) PLL unlock due to VCO #5
   Kenwood TS-440S (TS 440 S TS440S) PLL unlock due to VCO #1
   Kenwood TS-440S (TS 440 S TS440S) Intermittent operation
   Kenwood TS-440S (TS 440 S TS440S) SSB Power-adjustment
   Kenwood TS-440S (TS 440 S TS440S) Digital Audio Modification
   Kenwood TS-440S (TS 440 S TS440S) Fan Temperature Modification
   Kenwood TS-440S (TS 440 S TS440S) Possible cure for TS440 showing dots only on display
   Kenwood TS-440S (TS 440 S TS440S) Undocumented feature
   Kenwood TS-440S (TS 440 S TS440S) Serial interface
   Kenwood TS-440S (TS 440 S TS440S) A few adjustments you should know
   Kenwood TS-440S (TS 440 S TS440S) modification to use antenna tuner
   Kenwood TS-440S (TS 440 S TS440S) display calibration
   Kenwood TS-440S (TS 440 S TS440S) Connection to a DATA
   Kenwood TS-440S (TS 440 S TS440S) Computer Interface Instruction
   Kenwood TS-440S (TS 440 S TS440S) increase the power by ALC control
   Kenwood TS-440S (TS 440 S TS440S) with PIN-Diods
   Kenwood TS-440S (TS 440 S TS440S) Operation with the MC-85
   Kenwood TS-440S (TS 440 S TS440S) Notch filter low frequency improvements
   Kenwood TS-440S (TS 440 S TS440S) Protecting Q33
   Kenwood TS-440S (TS 440 S TS440S) Case Screws binding in the heat sink
   Kenwood TS-440S (TS 440 S TS440S) RX Audio Mods
   Kenwood TS-440S (TS 440 S TS440S) Bandscope-Schaltung
   Kenwood TS-440S (TS 440 S TS440S) Modifications in FM mode

Kenwood TS-440S (TS 440 S TS440S) technical specifications : Kenwood TS-440S (TS 440 S TS440S) technical specifications

Kenwood TS-440S (TS 440 S TS440S) Bandscope-Schaltung

Zum Herausführen der 2. ZF von 8,83 MHz genügt ein 33pf Keramikkondensator An Diode D34/ D36 auf der IF-Unit (X44-1680-00) und ein Stückchen RG-174 Coaxleitung.

Eine genaue Anleitung findet ihr in der Clubzeitschrift des DARC e.V.
CQDL 11-1991 S.673
Bandscope-Schaltung mit TS-440S und Monitor SM-220

Da ich keine zusätzlichen Löcher bohren wollte, habe ich entgegen der Anleitung die paar Schrauben mehr gelöst, und die unbeschaltete Chynchbuchse auf der Rückseite benutzt.
Die Platine mit den Chynchbuchsen ist mit drei Schrauben befestigt, die Leitungen sind mit Steckverbindern angeschlossen.

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