VK8PDG > KENWOD 03.08.03 17:39l 46 Lines 2136 Bytes #999 (0) @ WW
BID : 8269_VK8PDG
Read: GUEST DB0FHN VE7HFY
Subj: TS930.4
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0BEL<IR0NET<VK3TE<VK8PDG
Sent: 030804/0953Z @:VK8PDG.PLM.#NT.AUS.OC #:8269 FBB7.00i $:8269_VK8PDG
From: VK8PDG@VK8PDG.PLM.#NT.AUS.OC
To : KENWOD@WW
TS-930 AMTOR KEYING MOD
-----------------------
FIRST MOD:
GO TO THE SIGNAL BOARD AND LOCATE C500. C500 IS A 4.7 UF ELECTROLYTIC
LOCATED NEAR THE CENTER OF THE BOARD (IF VIEWED WITH RADIO UPSIDE
DOWN WITH THE FRONT FACING YOU) NEAR CONNECTOR 30.
REMOVE THIS CAPACITOR BY TWISTING IT WITH A PAIR OF NEEDLE NOSE
PLIERS. THIS CAPACITOR CAN NOT BE REMOVED ANY OTHER WAY WITHOUT COMPLETE
DISASSEMBLY OF THE RADIO.
ITS FUNCTION IS TO DEBOUNCE THE PTT SWITCH AND IS A BIG REASON WHY
THE 930 WILL NOT WORK SATISFACTORILY IN AMTOR MODE.
THE NEXT MODIFICATION IS TO GROUND ONE LEG OF R476. THIS RESISTOR
IS LOCATED ON THE SAME BOARD JUST ABOVE THE LARGE CW FILTER. THE
LEAD OF R476 THAT IS EXPOSED IS THE SIDE OF THE RESISTOR THAT
NEEDS
TO BE GROUNDED. AN EASY AND FOOL PROOF WAY TO DO THIS IS TO LOCATE
R474 WHICH IS RIGHT NEXT TO R476 AND SCRAPE SOME OF THE INSULATION
FROM BOTH OF THE EXPOSED LEADS AND SOLDER A BRIDGE BETWEEN THEV.
NOTE:
THE LEADS THAT ARE NOT EASY TO GET TO ARE NOT THE ONES TO WORRY
ABOUT... THESE MODIFICATIONS ARE RECOMMENDED BY KENWOOD AND WILL PROVE
TO BE VERY SATISFACTORY...
Reposted By VK8PDG
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