home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
World of Ham Radio 1997
/
WOHR97_AmSoft_(1997-02-01).iso
/
mods
/
kenwood
/
ts
/
ts940_19.doc
< prev
next >
Wrap
Text File
|
1997-02-01
|
1KB
|
64 lines
TS-940S FREQUENCY MOD
---------------------
HERE IS A MOD THAT WILL ALLOW YOU TO
TRANSMIT ON THE MARS FREQ.
LOCATE DIODE D135 ON DIGITAL UNIT.
DIGITAL UNIT IS LOCATED DIRECTLY
BEHIND THE LCD DISPLAY AND THE NOTCH
SQUELCH CONTROLS. CUTTING D135 WILL
ALLOW MARS OPERATION.
IF YOU WANT THE TS-940S TO TRANSMIT
FROM 1.5 MHZ TO 30 MHZ, THEN ON THE
SAME UNIT ALSO CUT D130 .
THAT SHOULD DO IT.
JUST REMEMBER THE FCC REGS WHEN MAKING
THIS MOD
TS-940S RESET
-------------
IF YOUR MAIN DISPLAY READOUT WILL NOT
LIGHT AND THE 940 WILL NOT TURN ON,
AFTER TURNING ON THE 940, REFER TO
YOUR OPERATOR'S MANUAL, PAGE 52, SECT.
11-4 HOW TO INITIALIZE MICROPROCESSOR.
ALSO, THE MAIN MICROPROCESSOR CAN BE
RESET BY FOLLOWING THE SEQUENCE LISTED
BELOW.
1. POWER ON THE TS-940
2. HOLD IN THE A EQUALS B SWITCH
3. POWER OFF, STILL HOLDING IN THE
A EQUALS B SWITCH, THEN TURN POWER
BACK ON.
TS-940S LOW SSB TALK POWER
--------------------------
THE BY-PASS CAPACITORS (C182,183)
ADDED (FROM THE PRODUCT S/N 601XXXX)
TO PREVENT POWER LINE INTERFERENCE,
THE FREQUENCY CHARACTERISTICS OF THE
ALC CIRCUIT HAS BEEN MODIFED, RESULTING
IN EXCESSIVE LIMITING BY THE ALC
CIRCUIT ON THE TALK POWER IN SSB. FOR
THIS REASON, PEAK POWER IN SSB MODE
MIGHT BE LOWER THAN THAT OF CW MODE.
COUNTERMEASURE: CHANGE THE VALUES OF
C182 AND C183 IN THE CONTROL UNIT FROM
.01 UF TO .0022 (50V)(X53-1420-00)
THANKS TO TRIO-KENWOOD FOR THIS INFO.