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TRIO KENWOOD
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TRIO-KENWOOD FM/AM TUNERS in Japan 2007.08.12
Transition of name of the company and brand from Kenwood site's history
YearEpoc
1960.1Change company name to "Trio Electronics, Inc.".
1961.11Establish brand name "KENWOOD".
Also see Trio/KENWOOD brand name (Japanese).
1979.10Begin to use brand name "KENWOOD" for high-end products in Japan.
1981.8Begin to use "KENWOOD" as Corporate brand.
1986.6Change company name to "Kenwood Corporation".
2008.10Became a subsidiary company of "JVC KENWOOD Holdings Inc."

High-end and mid-range tuners after 1976 (catalog or manual is ---> here)
analog tuner High end
YearJapanese modelPriceBandBrand in JapanExport modelFeature
1976KT-9700\150,000FMTRIO600T, 650TThe first tuner which adopt pulse count detector.
600T and 650T(with a bronze face) correspond to Japanese KT-9700 model.
1978KT-9900\200,000FMTRIOKT-917In addition to pulse count detector, a sample-and-hold stereo multiplex(MPX) demodulator was adopted.
Export KT-9900 model is not Japanese KT-9900
1979L-01T\200,000FMKENWOODL-01TFirst Kenwood brand tuner in Janan.
Since L-01T, L series based on the black face design.
In addition to pulse count detector and a sample-and-hold MPX, RF-direct was adopted.
1978L-07T\???,?00FMTRIOL-07TTRIO brand, although L series. L-07T use quadrature detection. Not pulse count detector. Rackmount style.
1979L-07T‡U
L-07TII
\130,000FMTRIOL-07TII
L-07TII
TRIO brand, although L series. Similar appearances to L-07T. Detector was changed to pulse count system.
1981L-02T\300,000FMKENWOODL-02TTop of the highend tuner made by introduction of high advanced technology like Non-spectrum-IF (active-distortion-correct-IF) and Non-step-sampling&hold-MPX. For AF out, sigma drive is used.
The first Kenwood tuner that adopt PLL detector.
For export model, L-02T has digital friquency display instead of deviation/multipath meter.
1982L-03T\120,000FMKENWOODn/aThe last analog tuner. It looks like KT-1100, but inner circuit circuit is quite different from KT-1100. L-03T's circuit is a subset of L-02T like Non-spectrum-IF (active-distortion-correct-IF). For AF out, sigma drive is used.
198?L-02TPRO\???,000FMKENWOOD???L-02T specially made to FM broadcast stations.
198?L-03TPRO\???,000FMKENWOOD???L-03T specially made to FM broadcast stations.
analog tuner Midium range
YearJapanese modelPriceBandBrand in JapanExport modelFeature
1976KT-7700\78,000FMTRIOKT-8300
KT-9900
FM/AM
Final product of no pulse count tuner. 7-gang FM front end.
Export KT-8300 and KT-9900(Europian model, with a bronze face) correspond to Japanese KT-7700 model. But they have 6 FM and 2 AM gangs.
1977KT-8000\69,800FMTRIO???First pulse count tuner in mid range.
1978KT-8300\63,000FMTRIOKT-815
FM/AM
Export KT-815 correspond to Japanese KT-8300 model. Export KT-8300 correspond to Japanese KT-7700 model.
1980KT-1000\69,800FM/AMTRIOKT-1000New design. Pulse count detector and a New-sample-and-hold MPX, RF-direct was adopted for FM. Loop antenna was adopted for AM.
1982KT-1100\74,800FM/AMTRIOKT-1100Similar appearances to L-03T, in particular black model.
Inner ciucuits are improved KT-1000. Pulse count detector and a New-sample-and-hold MPX, RF-direct, etc.
The last pulse count tuner.
Europian model has digital friquency display.
1982KT-2200\99,800FMTRIOn/aAdvanced model of KT-1100 on the product line.
But inside circuit is quite different from KT-1100.
Inside circuit is very similar to L-03T. Only Sigma-drive and inner frame copper plate were leaved out. Silver color only.
digital synthesizer tuner
YearJapanese modelPriceBandBrand in JapanExport modelFeature
1981KT-9X\64,800FM/AMTRIOKT-9XKT-9X maybe the only digital synthesizer tuner that use pulse-count detector. Sold as one of "Expert series" component.
1984KT-3030\120,000FMKENWOODKT-1100SDFirst hi-end digital synthesizer tuner.
1984KT-2020\74,800FM/AMKENWOODKT-990SDFirst mid-range digital synthesizer tuner by Kenwood brand name.
Export KT-2020 model is not Japanese KT-2020.
1986D-3300T\140,000FMKENWOODKT-3300DThe last high-end tuner in Japanese market.
1986KT-1100D\74,800FM/AMKENWOODKT-1100DThe last mid-range tuner.
1991n/a$1,100FMKENWOODL-1000TL-1000T was not sold in Japan.
Sold with L-1000C (control amplifire), L-1000M (power amplifire), L-1000D (CD player) in oversea's market.
This list omit old tuners before 1975 and low price digital synthesizer tuners.
I have a few information about low price tuners. And there are a few information about them in the Internet.
Year of sale may be postponed one or two.
Sansui was not sell FM use only tuner.
Export model may be different from Japan's domestic model, although they have same model number.
It would be greatly appreciated if you inform of the error in writing and the omission, etc.

In addition, read Japanese page if further information is necessary. (Please use traslation site.)

Reference WebSites
No.TOP PAGETRIO / KENWOOD FM/AM TUNERLang.
0.Catalogs and manuals pageTRIO / Kenwood tuner's catalogs, manuals and links to the related sites.*
1.Audio kaikorokuKT-9700,  KT-9900,  L-01T,  L-02T,  L-03T,  KT-1000,  KT3030,  D-3300TJp
2.Footprint of audioTRIO/KENWOOD
L-07TII,  L-02T,  L-02TPRO,  KT-8300,  KT-1000,  KT-1100,  KT-2200,  KT-3030,  KT-2020,  D-3300T
Jp
3.Amp Repair StudioTUNER repair records Document of many tuners repairJp
4.TUNER INFORMATION CENTERKenwood Tuners The most famous Tuner Fan's website.En
5.Koichiro Shida's Home PageThe Last Analog FM TunersJp
6.Audio agentTRIO KT-9900 explanation and photosJp
7.AudioinnovationenKenwood Galerie KT-917 Champagner Front version and normale Version
Kenwood KT-917 Voltage and equalizer switches on the back panel
Ge
8.keith garratt's webpages (closed)my hi-fi kit Trio brand KT-917 (closed)En
9.Audio woodsKENWOOD L-02T dissection L-02T's inside photosJp
10.Welcome Tech's home theatorintroduce of L-02T Repair by KenwoodJp
11.MZLwebsitePAGE of FM tuner KT-7700 Cleaning tuning scaleJp
12.BLUESS LaboratoryTRIO KT-7700 repair lamp and inside photo
TRIO KT-1100 inside photo
TRIO KT-1100 mod replace antenna connector
Jp
13.Min2 House11. TRIO KT-1000 repair recordsJp
14.Stephans Andere SeiteUKWellensalat A way of KT-1100 and KT-80 alignmentGe
15.Atelier AUDILLUSIONRenewal of KT-80 repair and modify records
KT-80(1980) is the most simple pulse count FM exclusive tuner.
Jp
16.Aramachi Traffic MusiumHard-off shopping diary : KT-80 Jp
17.Hiro's Website Kenwood KT-2020 repair with photos
KENWOOD KT-1100D repair with photos
Tuner's index See many tuners
Jp
18.La Rue Des Etoiles's recycle factoryKENWOOD tuner KT-2020 inside photos
KENWOOD tuner KT-1100D inside photos
Jp
19.ATMEL AVR&Macintosh&AudioKT-1100D (KENWOOD) replace antenna connector. inside photosJp
20.mgifos's Movie Review[equipment] Kenwood KT-1100D Antenna connector was broken.
KT-1100D's antenna connector may be inferior.
Jp
21.Home electrical products discussinShining Kenwood L series Explanation of Kenwood L series from L-07 to L-x1. Also L-1000 series. simplified ChineseCn
22.A ship leave from ShanghaiShining Kenwood L series Explanation of Kenwood L series from L-07 to L-x1. Also L-1000 series. A quotation of above? simplified ChineseCn
23.Kenwood Electronics Deutschland GmbHProduktarchiv Tuner Kenwood Germany
pdf brochures of L-01T, KT-1000, KT-1100D and another products
Ge

SANSUI FM/AM tuners list in Japan is here (with Japanese / oversea's model comparison)
Link welcome to in any HTML pages.
No matter by commercial or auction site.
It would be greatly appreciated if you inform of the error in writing and the omission, etc.


CoolTune FM/AM TUNER Labo
English http://cooltune.s28.xrea.com/indexe.htm
Japanese http://cooltune.s28.xrea.com/index.htm

2007.08.12 start
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