Radio Shack TRC-501 owner manual Specifications, Receiver

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21-1701.fm Page 17 Thursday, August 5, 1999 12:50 PM

SPECIFICATIONS

RECEIVER

Frequency Coverage

All 40 CB Channels (Class D)

 

26.965 to 27.405 MHz

Sensitivity

0.7 μV or better for 10 dB (S+N)/N

Adjacent Channel Rejection

55 dB

Audio Output

3 Watts (Minimum)

Frequency Response

6 dB (at 450–2500 Hz)

Intermediate Frequency

1st 10.695 MHz

 

2nd 455 kHz

Cross Modulation

50 dB

Squelch

Adjustable from 0.5 μV to 1 mV

TRANSMITTER

 

Frequency Coverage

All 40 CB Channels (Class D)

 

26.965 to 27.405 MHz

Output Power

4 Watts (FCC Maximum)

Type of Modulation

AM Double Sideband, Full Carrier Modulation

Modulation Capability

90%

Spurious Emission

–60 dB

Frequency Tolerance

±200 Hz

Antenna Impedance

50 Ohm

Current Drain (13.8 volt supply)

1 Amp with No Modulation

 

1.6 Amps with 90% Maximum Modulation

GENERAL

 

Power Requirements

13.8 Volts DC, Negative Ground

Dimensions

15/16 x 41/2 x 65/16 Inches (HWD)

 

(33 x 114 x 160 mm)

Weight

15.7 oz

 

(445 g)

Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.

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Contents TRC-501 Introduction FCC Information Contents Connecting the Microphone InstallationMounting the Microphone Holder MountingSelecting an Antenna Connecting AN AntennaConnecting the Antenna Connecting AN Optional External SpeakerUsing Vehicle Battery Power Using the CB as a Base Station Connecting PowerOperation Receiving Transmissions and Adjusting SquelchCommon Uses for a CB Radio TransmittingCB Operation Tips Maximum Range CB CourtesyCode Meaning Using Common 10-CodesSymptom Check That TroubleshootingReducing Noise Maintenance Replacing the Fuse Receiver SpecificationsFm Page 18 Thursday, August 5, 1999 1250 PM Fm Page 19 Thursday, August 5, 1999 1250 PM RadioShack Division of Tandy Corporation Fort Worth, Texas
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TRC-501 specifications

The Radio Shack TRC-501 is a classic handheld transceiver that epitomizes the innovation of the late 20th century in portable communication technology. Released during the peak of the CB radio craze in the 1970s, this device catered primarily to hobbyists and amateur radio operators, and it quickly won the hearts of many with its compact design and impressive features.

One of the main features of the TRC-501 is its ability to operate on the Citizens Band (CB) radio frequencies, which span from 26.965 MHz to 27.405 MHz. This range allowed users to communicate freely within a specified distance, making it suitable for personal use, small business operations, and even for truck drivers seeking to stay in touch while on the road. The unit supports 40 channels, providing ample options for users to find clear communication channels and avoid interference from other users.

The TRC-501 boasts a straightforward control layout, featuring a simple dial for channel selection and a push-to-talk (PTT) button positioned for easy access. The inclusion of an RF gain control helps users fine-tune their reception based on the signal strength, enhancing the overall clarity of conversations. Additionally, its built-in speaker ensures that audio is loud and clear, critical for effective communication in noisy environments.

In terms of technology, the TRC-501 operates using superheterodyne circuitry, a common method employed in radio communications that enables effective signal processing and minimizes noise. This technology helps the device maintain a reliable connection over various distances, making it versatile for different communication scenarios.

The TRC-501 is also designed for durability and portability. Its compact form factor, combined with a sturdy plastic casing, means it can withstand the rigors of everyday use. Users often appreciate its lightweight design, which allows for easy transport, whether in a vehicle or as part of outdoor activities.

Overall, the Radio Shack TRC-501 stands as a testament to the evolution of mobile communication technology during its time. Its combination of essential features, reliable performance, and user-friendly design has secured its place in the hearts of radio enthusiasts and collectors alike. The TRC-501 remains a symbol of a bygone era, reflecting the excitement of communication technology during the 1970s and the birth of more mobile forms of communication, paving the way for the advanced systems we have today.