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1. Kenwood ts 940 serial numbers serial numbers#
2. Kenwood ts 940 serial numbers pdf#
3. Kenwood ts 940 serial numbers mod#
4. Kenwood ts 940 serial numbers driver#
5. Kenwood ts 940 serial numbers manual#

It should be noted that the power situation at the end of a long rural line is not favorable, nor is the fact that our radios experience the rough handling as airline baggage (even in the excellent foam-lined Pelican cases) and then sit idle for extended periods in the foggy and humid equatorial mountain-top air. All our radios have the stock CW and SSB IF filters (TS-930 SSB filters are wider than the pin-compatible ones for TS-940/850) and the PIEXX digital board, both for reliability, new functions such as main tuning knob control of RIT when dial is locked, and to be able to use computer logging and control. All have been standardized to the same configuration, so we would be able to separate the sources of any problems.

Kenwood ts 940 serial numbers serial numbers#

Our radios have serial numbers ranging from 4M to 8M. I was aware of the change of TS-930 design at S/N 310XXXX that responded to the many early problems (digital board through holes, amplifier through holes, receiver muting, sidetone, etc.) that are well documented in listings of modifications, as well as in Kenwood's application notes. Despite this we experienced failures in contests, with the requirement to return the radios to the US for repair. At the end of the burn-in period I checked for unchanged sensitivity, power output and fan operation. I aligned each radio and ran it for a four-day period at high transmitting duty cycle on CW and SSB, using computer logging software to transmit into a dummy load (which itself required a cooling fan).

AGC overshoot made reception difficult of signals in the range of S9+20 dB.

Kenwood ts 940 serial numbers driver#

Several radios experienced outright power supply failure, and one had a difficult-to-trace low frequency oscillation in the 28V circuit that involved the output amplifier, and destroyed amplifier driver bias transistors (this was cured by replacing the 2N5885 regulator transistors).As a partner in the new HC8 contest station on Isla San Cristobal, I undertook to obtain and refurbish a number of 930s, but we were disappointed by the lack of reliability we experienced. This particular performance advantage has, for whatever reason, eluded the designers of more modern radios. The Kenwood TS-930, while many years out of production and lacking many of the technology developments of the past twenty years, continues to be an excellent HF radio with a unique ability to hear multiple signals in a pileup. Kenwood TS-930S (TS 930 S TS930S) technical specifications Kenwood TS-930S (TS 930 S TS930S) technical specifications : Kenwood TS-930S (TS 930 S TS930S) SSB TX Tone Quality Kenwood TS-930S (TS 930 S TS930S) RF Feedback Kenwood TS-930S (TS 930 S TS930S) 15 Meter Internal Beat Tone Kenwood TS-930S (TS 930 S TS930S) CW Pitch Tone Shift

Kenwood ts 940 serial numbers mod#

Kenwood TS-930S (TS 930 S TS930S) Amtor keying mod Kenwood TS-930S (TS 930 S TS930S) Tuning Mods Kenwood TS-930S (TS 930 S TS930S) Intermittent TX Power Output Kenwood TS-930S (TS 930 S TS930S) Service Notes on AT-930 Kenwood TS-930S (TS 930 S TS930S) PLL Unlock

Kenwood ts 940 serial numbers manual#

Kenwood TS-930S (TS 930 S TS930S) Error in the operator's manual of the DIGITAL UNIT pin Kenwood TS-930S (TS 930 S TS930S) Power Supply surge protection Kenwood TS-930S (TS 930 S TS930S) ALC level drift 28 MHz CW Kenwood TS-930S (TS 930 S TS930S) Feedback into MIC CRT Kenwood TS-930S (TS 930 S TS930S) Audio oscillation

Kenwood TS-930S (TS 930 S TS930S) Low RX sensitivity Kenwood TS-930S (TS 930 S TS930S) CW Hetrodyne Tone Kenwood TS-930S (TS 930 S TS930S) Incorrect AC line voltage setting Kenwood TS-930S (TS 930 S TS930S) Noisy Power Supply Fan Kenwood TS-930S (TS 930 S TS930S) Expanded R.F. Kenwood TS-930S (TS 930 S TS930S) Digital Unit through-plated hole defects and their symptoms Kenwood TS-930S (TS 930 S TS930S) W6NL Mods Kenwood TS-930S (TS 930 S TS930S) power supply overheating Kenwood TS-930S (TS 930 S TS930S) Power amplifier repair Kenwood TS-930S (TS 930 S TS930S) repair hints Mods for Kenwood TS-930S (TS 930 S TS930S) :

Kenwood ts 940 serial numbers pdf#

PDF Service Manual/schematics for Kenwood TS-930S (TS 930 S TS930S) : PDF User Manual for Kenwood TS-930S (TS 930 S TS930S) : Programming software for Kenwood TS-930S (TS 930 S TS930S) : Programming interface schematics for Kenwood :