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Author Topic: 60B11 type electret caps for MC-44 mike  (Read 2125 times)
HG5AZR
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Posts: 0




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« on: November 19, 2013, 08:01:01 AM »

Hi all!

1.Where can I buy 60B11 type electret caps for MC-44 mike?

2.Who is a manufacturer?

Kenwood does not have it.

Thanks
             Zoli
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K9YLI
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Posts: 863




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« Reply #1 on: November 19, 2013, 08:28:40 AM »



 I looked at  mc 44  mic schematic.. I find no  odd components.  all are common labeled parts.

the Mic element  would be  any old  electret  mic element.. In the states   commonly 
about  98 cents...

which component on the schematic  are you refering to?HuhHuh
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W9GB
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Posts: 2622




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« Reply #2 on: November 19, 2013, 09:05:47 AM »

Zoli asked this same question (repair/fix Kenwood MC44) at QRZ in March 2013.
http://forums.qrz.com/showthread.php?376992-Kenwood-MC-44-mike

Kenwood MC-44 microphone
Schematic diagram and Parts List
http://boxspringsonline.com/kenwood/1587-kenwood-mc-44-schematic/download

This microphone uses an Elecret microphone element (2-wire design), ECM in diagram.
http://en.wikipedia.org/wiki/Microphone#Electret_condenser_microphone

WHO Manufactures Elecret Microphone Elements ?

Panasonic
http://www.panasonic.com/industrial/components/pdf/em06_wm61_a_b_dne.pdf

Primo Electronics Ltd. (Singapore) has a wide variety (sizes) for radio, telephone and spy usage.
Indonesia Plant
http://www.primo.com.sg/ourproducts-sg-microphone.html
Japan Plant
http://www.primo.com.sg/ourproducts-jap-microphone.html

JLI Electronics
http://www.transsound.net

There are only 2 Electrolytic Capacitors inside the microphone (C2, 0.047) and (C9, 4.7)

Kenwood USA Parts - East Coast
East Coast Transistor
http://www.kenwoodparts.com/parts/search.php

East Coast Transistor
2 Marlborough Road
West Hempstead, NY 11552
United States
Toll Free USA: 1-800-645-3516
Toll Free New York: 1- 800-632-3323
International Callers: +1-516-483-5742
« Last Edit: November 19, 2013, 10:04:26 AM by W9GB » Logged
W9GB
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Posts: 2622




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« Reply #3 on: November 19, 2013, 10:44:49 AM »

Another example, SparkFun Electronics (Boulder, CO - USA)
https://www.sparkfun.com/static/contact

Electret Microphone element, COM-08635 : $0.95 (USD) or 95 cents.
https://www.sparkfun.com/products/8635

Datasheet for Elecret element, above.
http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Sensors/Sound/CEM-C9745JAD462P2.54R.pdf
« Last Edit: November 19, 2013, 10:48:19 AM by W9GB » Logged
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