Intermodulation properties of switching diodes, by Dr. 4.2 RadCom Technical Topics explains what Pin Diodes were supposed to achieve. PIN DIODE IMPROVEMENTS 4.1: Background on how Pin Diodes were discovered to improve radios.
Kenwood ts 940s serial numbers mod#
Executive Summary of AGC Mod Independent Feedback on how Receiver Improves THE PRODUCTION MISTAKE DESCRIBED: TO CHANGE THE RESISTORS THE INITIAL PROBLEM SYMPTOMS: ACKNOWLEDGEMENTS TO PERSONS WHO HELPED SOLVE THIS A CAUTION: COMMUNICATIONS WITH KENWOOD JAPAN BELOW: SUMMARY OF R149 AND R150 MIS-LABELLING Mike KC8ZNW on 25/4/05 describes this same behaviour to the. FIELD EFFECT TRANSISTORS AROUND THE WRONG WAY. KENWOOD PRODUCED 3 SERVICES BULLETINS WHICH DO CONSIDERABLY IMPROVE THE RECEIVER. PLL BOARD 4: PLL BOARD AND RF BOARD AND PLL OUT OF LOCK AVR BOARD & POWER SUPPLYįAN AND TEMPERATURES COOL AVR COMPONENTS BY REMOUNTING ON HEAT SINK POWER SUPPLY HEAT SINK RUNS TOO HOT VERIFY THERMISTOR 101 IS ATTACHED AND FUNCTIONING SUMMARY OF R149 AND R150 MIS-LABELLING What is new in Version 14: BATTERIES: įield measurements of receiver improvement following FET swap What is new in Version 13: PROMOTIONAL BROCHURE Copyright: Everything on this page What is new in Version 15: You assume total liability for any modification you undertake. Please email to Yours sincerely Jeff King ZL4AI / DU7 Disclaimer: No liability or responsibility whatsoever is taken for any of the information on this site. I will publish all email feedback at the end of the page, so that whatever is discovered by others can be shared by all. When information is already well documented and reliably maintained on another site then a hyperlink is made to that site to avoid yet another slightly different version. The intention is to acknowledge the person who discover the information so questions can be sent to that person. Some information here is not available anywhere else and should be useful to any TS-940 owner, Information does not exist in a single web site which is easy to follow, If the information remains available more TS-940s will be repaired and functional, (and probably The 940 has to be one of the greatest transceivers ever produced. Version 10: 4 August 2005, Version 11:, Version 12: 18 October 2005, Version 13: 23 October 2005, Version 14: 22 March 2006, Version15: * April 2006įrom a passionate Kenwood TS-940 owner.
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