Twenty-One CL

KLH R&D Co.; Cambridge (MA)

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Country
United States of America (USA)

Manufacturer / Brand
KLH R&D Co.; Cambridge (MA)

Year
1974

Category
Broadcast Receiver - or past WW2 Tuner

Radiomuseum.org ID
307045

Picture
Schematics

Twenty-One CL ; KLH R&D Co.; (ID = 2342188) Radio — KLH R&D Co.; Twenty-One CL (3)

Twenty-One CL ; KLH R&D Co.; (ID = 2342189) Radio — KLH R&D Co.; Twenty-One CL (3)

Twenty-One CL ; KLH R&D Co.; (ID = 2342190) Radio — KLH R&D Co.; Twenty-One CL (3)

Twenty-One CL ; KLH R&D Co.; (ID = 2342191) Radio — KLH R&D Co.; Twenty-One CL (3)

Twenty-One CL ; KLH R&D Co.; (ID = 2342192) Radio — KLH R&D Co.; Twenty-One CL (3)

Twenty-One CL ; KLH R&D Co.; (ID = 2342194) Radio — KLH R&D Co.; Twenty-One CL (3)

Twenty-One CL ; KLH R&D Co.; (ID = 2342150) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual page 1

Twenty-One CL ; KLH R&D Co.; (ID = 2342151) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 2

Twenty-One CL ; KLH R&D Co.; (ID = 2342152) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 3

Twenty-One CL ; KLH R&D Co.; (ID = 2342153) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 4

Twenty-One CL ; KLH R&D Co.; (ID = 2342155) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 5

Twenty-One CL ; KLH R&D Co.; (ID = 2342156) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 6

Twenty-One CL ; KLH R&D Co.; (ID = 2342157) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 7

Twenty-One CL ; KLH R&D Co.; (ID = 2342158) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 8

Twenty-One CL ; KLH R&D Co.; (ID = 2342159) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 9

Twenty-One CL ; KLH R&D Co.; (ID = 2342160) Radio — KLH R&D Co.; Twenty-One CL (2)
Owners Manual Page 10

Click on the schematic thumbnail to request the schematic as a free document.

Technical Specifications

Number of Transistors
8

Semiconductors

Main principle
Superheterodyne (common); ZF/IF 455/10700 kHz

Wave bands
Broadcast (BC) and FM or UHF.

Power type and voltage
Alternating Current supply (AC) / 60 Hz: 120 Volt

Loudspeaker
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.87 inch = 7.3 cm

Power out
4.5 W (7.5 W max.)

Material
Wooden case

from Radiomuseum.org
Model: Twenty-One CL - KLH R&D Co.; Cambridge MA

Shape
Tablemodel with Clock ((Alarm-) Clock Radio).

Dimensions (WHD)
14.9375 x 6.5 x 7.625 inch / 379 x 165 x 194 mm

Net weight (2.2 lb = 1 kg)
10.25 lb (10 lb 4 oz) / 4.654 kg

Author
Model page created by Chad Phillips. See "Data change" for further contributors.

Other Models
Here you find 22 models, 20 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from KLH R&D Co.; Cambridge (MA)

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