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Last modified 2024-01-30

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Royce 641 / 1-641

A picture of Royce 641 / 1-641

SPECIFICATIONS

GENERAL
Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Mode:AM / SSB
Frequency control:PLL "Gyro-Lock"
Frequency stability:?%
Clarifier or Delta tune:±1.5 KHz
Power supply:Mains: 117 VAC (Fixed power cord)
or 13.8 VDC (2-pin connector on pigtail)
Current drain / power consumption:RX: ? mA @ 13.8 VDC
TX: Less than 2.5 A @ 13.8 VDC
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):382.134*270 mm (15.06*5.28*10.62")
Weight:8.5 Kg (18.75 lb)
Other features:PA. NB. Tone control.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 0.7 uV (10 dB S/N)
SSB: 0.2 uV (10 dB S/N)
Selectivity: AM
5 KHz (No reference)
SSB
2.2 KHz (No reference)
Image rejection:
AF output power / speaker:4 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power: AM: 4 W
SSB: 12 W (PEP)
Modulation system:
Max FM deviation (Factory set):No FM
Spurious emissions:Better than -60 dB
Microphone impedance / connector:500 ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1977-197x (Discontinued)
Main PCB:
Sub PCBs:
Additional info:
Related documents:User manual (3.6 MB)
Sams Photofact #:CB-201 (July 1978)
Modifications and fixes:
Reviews:
Options / Accessories:
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A rear picture of Royce 641 / 1-641