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Kenwood meter lamp

Discussion in 'General Technical Questions and Answers' started by AA1VA, Aug 26, 2009.

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  1. AA1VA

    AA1VA Ham Member QRZ Page

    Does anyone know the voltage and wattage of the replacement of the meter bulb for the TS 440?
  2. AA1VA

    AA1VA Ham Member QRZ Page

    :eek:Does anyone know the voltage and wattage of replacement bulb for meter on a TS 440?
  3. AG3Y

    AG3Y Ham Member QRZ Page

    I would join the Kenwood users group and ask over there!

    I found a source for my Golddust Twins there, and you would probably be able to do the same!

    Are they littlefuse shaped bulbs ? They were once common in foreign cars, although now you can hardly find them anywhere.

    Well, hopefully you will find your answer.

    73, Jim
  4. W9GB

    W9GB Ham Member QRZ Page

    Standard 12 to 14 Volt bulbs found in hobby shops (grain of wheat) and at hamfests or eBay by many vendors will likley work.

    Kenwood Parts lists this bulb for the TS-440S
    Not sure if this is just the cap or the bulb and cap.

    B30-0817-25 LAMP BLUE CAP - TS-830S TS-440S TS-940S $6.22
    Festoon lamps (or bulbs) -- very common is instrument panel lighting for automobiles.
    SuperBright LEDs are starting to appear as alternatives!

    Last edited: Aug 26, 2009
  5. W5RKL

    W5RKL Ham Member QRZ Page

    Radio Shack also sells a similar 12 volt "Mini Lamp" that can be used as replacements. The Radio shack part number is "272-1141". If your local Radio Shack does not have them in stock the store can order them and have them delivered to your house. I ordered a number of them and have used them to replace the dial lamps in my Kenwood TS-820S, VFO-820, and a few Kenwood TR-7400A 2 meter transceivers I have. They are not as bright as the original dial lamps but they do work quite well. They are, as one response stated, the "Grain of wheat" type lamps with 2 1/2 inch red/white leads. The lamp physical size is very close to the original Kenwood lamps size. The Radio Shack lamps in my TS-820 and VFO-820 have continued to work for the last 3 years. The 7400 lamp replacements were just installed a few months ago.

    You will have to cut the original lamp wires close to the original burnt out dial lamps and splice the replacement lamp wires. The dial lamps are not mounted in sockets.

    Mike W5RKL
  6. AG3Y

    AG3Y Ham Member QRZ Page

    Greg, I went to the auto parts store the other day to see if they would have any of those littlefuse lamps.

    The only thing they stocked were the larger lamps with the even larger glass cylinders. I told them the lamps I was looking for looked EXACTLY like a littlefuse, and the people in both auto parts stores just shrugged their shoulders, and said, "they quit putting those in cars, YEARS AGO ! "

    I couldn't access the site in your post above. Too busy, I guess. And I am not saying that the bulbs in question are the "littlefuse" variety. But I will try to access this page again. It might be an additional or even better source for those lamps. Otherwise, I may be trying to make grain of wheat bulbs work !

    P.S. I looked at the "festoon lamps" with the superbright LEDs. NOPE they are the larger lamps that are NOT the same physically as the "littlefuse" lamps.

    If I don't get exact replacements, I will be getting out the soldering iron and the 5 minute epoxy !
    Last edited: Aug 26, 2009
  7. KI6ZIF

    KI6ZIF Ham Member QRZ Page

    And you should. I suggest replacing the bulb with a similar sized led and appropriate reisitor for voltage level @ bulb. Besides, that vitage radio might look good with a lighting change.
  8. W9GB

    W9GB Ham Member QRZ Page

    Jim -

    Dynaco kits also used the LittleFuse style (size) for their dial lights. Sizes from T1 (3 mm), T1-3/4 (5 mm) up to T3
    I actually found a reliable source at West Marine stores -- I guess some of the boat makers also used them at one time.

    Wedge base LED replacements

    Last edited: Aug 26, 2009
  9. WA2CWA

    WA2CWA Ham Member QRZ Page

  10. W2VW

    W2VW Ham Member QRZ Page

    When the right LED is used the meter light matches the readout light too.
  11. KI6ZIF

    KI6ZIF Ham Member QRZ Page

    Agree'd. I just think it's nice when older equipment with incan lights are updated to LED's. I did a full conversion in my 2004 corvette from incan bulbs to full LED's (red ones). Driving that car at night was darn easy on the eyes.

    I have a penchant for red LED's on equipment, especially when combined with resistors to drop the value enough to allow the lighting to just be effective enough in a dim lit room.

    (for those that don't know... Red lighting is known to allow your eyes to relax in low light. I dont have a bright light on while just relaxing or using the radio. Only when I've got something on the bench for work.)
  12. AG3Y

    AG3Y Ham Member QRZ Page

    Thanks a bunch, Pete. I will check them out this week. I am probably going to need quite a few of them. My newly acquired receiver is completely dark.

    Oh, BTW, ZIF, being an amateur astronomer, I know perfectly well what you are saying about red lamps and night vision. But as I said, the GoldDust Twins are completely dark if they do not have dial lighting in them. And since they are hardly what you would consider to be "portable", white will do just fine, thank you !

    My Icom has a yellow analog meter for all the metering functions, and one of those blue florescent displays for the digital dial. I notice that it is getting dimmer now. Not so much as to be worrisome, but enough so that some segments that are seldom used are significantly brighter than those which stay lit almost all the time.

    Too bad that Icom chose to use a proprietary display, instead of putting in a series of 7 segment displays, such as the old Cubic Astro used !

    Example here :
  13. WA2CWA

    WA2CWA Ham Member QRZ Page

    These lamps were also used on a lot of late 60's and 70's Hi-Fi equipment. If you want to subdue the lighting effect, you can get small bottles of stain glass paint in various colors (blue, green, red, yellow) at hobby shops that works well with these lamps.

    Pete, wa2cwa
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