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Last modified 2022-02-12

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Realistic TRC-57 (21-157)

A picture of Realistic TRC-57 (21-157)


Type:Citizen band transceiver
Frequency range:26.965-27.255 MHz
Channels / tuning steps:23
Mode:AM / SSB
Frequency control:PLL (Multiple discrete IC's)
Frequency stability:0.0002% @ 25C (77F), after 5 minutes warmup
Clarifier or Delta tune:1.5 KHz
Power supply:Mains: 120 VAC
or 13.8 VDC
Current drain / power consumption:RX: Less than 1.6 A @ 13.8 VDC or less than 60 W @ mains
TX: Less than 2.9 A @ 13.8 VDC or less than 95 W @ mains
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):349*148*284 mm (13.74*5.83*11.18")
Weight:? Kg (? lb)
Other features:PA. ANL/NB. 12/24 hr alarm clock.

Receiver system: Single conversion superheterodyne
IF: 7.8 MHz
Sensitivity: AM: 0.5 uV (10 dB S/N)
SSB: 0.25 uV (10 dB S/N)
Selectivity:60 dB (Adjacent channel)
Image rejection:
AF output power / speaker:4.5 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm

RF output power: AM: ~3.5 W (5 W input)
SSB: ~12 W (PEP)
Modulation system:
FM deviation (Factory set):No FM
Spurious emissions:Better than -50 dB
Microphone impedance / connector:600 ohm / 5-pin DIN
Microphone input level:0.4-0.8 mV for 50% modulation (AM) and 4 W PEP output (SSB)

Manufactured:197x-197x (Discontinued)
Main PCB:PC-068AA by Uniden
Sub PCBs: PC-006BB - PSU board
PC-069AA - Clock board
PC-070AA - Digital clock control board
PC-071AA - Digital clock display board
PC-072AA - SWR and ALC board
PC-073AA - VCO board
PC-074AA - PLL matrix board
Additional info:
Related documents: RF final: 2SC1307
Sams Photofact #:CB-102 (November 1976)
Modifications and fixes:
Options / Accessories:
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