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Realistic Navaho TRC-459 AM/SSB CB Video Overview

The Realistic TRC-459 was the base version of the TRC-480 and offered a digital clock, memory and scan functions, and led meters. The radio isn't a great performer overall and the slider controls tend to wear out over time. Interesting radio but not a collector's item.

CB Tricks - Clarifier and Freq Expansion

CB Tricks - Factory Service Manual

From the radio shack website is the following information -

TRC-459 AM SSB CB Transceiver
(210-1582) Care and Maintenance Faxback Doc. # 46734

Since only the finest quality parts are used throughout your Transceiver
(and these are all conservatively rated), you will need little or no
service or repair of the unit.

Be sure you treat it with the care deserving of such a piece of electronic
equipment. It is rugged and designed for either base or mobile use but do
not abuse it. Be sure you always make proper connections and adequate
mounting provisions.

If you run into problems with the unit, we recommend you check the
following:

1. If trouble is experienced with receiving.

Check the VOLUME control and POWER setting.

Be sure SQUELCH is adjusted properly. Is it over squelched?

Check if the unit is set to an operating channel.

Be sure PA button is not pressed in.

2. If trouble is experienced with transmitting.

Check if the transmission line is securely connected to the ANTenna
Connector.

Check to be sure the antenna is OK.

Are all transmission line connections secure and free of corrosion?

Make sure you are fully pressing the Push To Talk Button on the Mic.

Be sure Mic connector is firmly pressed into its jack.

Be sure PA button is not pressed in.

3. If the transceiver is completely inoperative.

For DC Power operation, check the wires and the in line fuse (4 A).

4. If trouble is experienced with KEYBOARD operation.

Insufficient DC voltage may have been supplied for a short period of
time; temporarily disconnect DC power cord from the unit, then
reconnect it and try keyboard operation once more.

If these checks don't solve the trouble, do NOT attempt repairs or
adjustments yourself. The unit should be serviced only by a qualified
radio technician. Whenever possible, return the unit to the store from
which it was purchased.

WARNING: Do not open up the Transceiver to make any internal adjustments.
Any internal adjustments can be made only by (or under the direct
supervision of) a person holding a Federal Communications
Commission Radio Telephone 1st or 2nd Class License.

Internal adjustments and/or modifications can lead to illegal
operation as defined by FCC Rules and Regulations, Part 95. Such
illegal operation can lead to very serious consequences.

TRC-459 AM SSB CB Transceiver
(210-1582) Controls and Functions Faxback Doc. # 46884

A short description of the Controls is given here; for actual Operating
Instructions, refer to USING THE KEYBOARD and USING YOUR TRANSCEIVER in
Faxback Doc. # 46733.

Push Buttons and Controls:

24 HR - Press to display time in the 24 hour mode; press again to return
to 12 hour display.

AUTO - Press to use the Clock as an automatic control to turn on the CB
receiver; press again to return to normal operation of the
TRC-459.

POWER - Press to turn unit "on"; press again to turn "off".

SWR CAL - Press in when using the SWR CAL control (on back panel) to set
reference for SWR measurement. Press again to return to normal.

NB/ANL - (Noise Blanker/Automatic Noise Limiter) Press in to cut out
annoying impulse and hash type noise; press again to release
these functions.

DIMMER - Press to dim the Clock display; press again to return to normal
brightness.

CB - Press in for normal CB use (Receiver or Transmit). This push
button is interlocked with the PA and MON buttons (pressing one
in automatically pops out any other).

PA - Press in to use the Public Address amplifier feature. (Button is
interlocked with MON and CB.)

MON - Press in when you want to use the Public Address feature and yet
be able to monitor for CB signals (through the PA Speaker).
(Button is interlocked with the CB and PA.)

Sliding Controls:

CLARIFIER - Functions as a "fine tuning" (or "delta" tuning) control.
It permits you to tune your receiver to exactly the same
frequency of any other station (or stations) you are
communicating with.

TONE - Adjusts the tonal quality of the received signal.

RF GAIN - Varies the sensitivity of the RF amplifier stages of the
receiver circuitry.

SQUELCH - Cuts out unwanted background noise when no signal is being
received.

VOLUME - Use to adjust sound level of the received signal. When
using PA it controls the level of the PA output.

Digital Clock - Shows the precise time in large, easy to read 7 segment
Display display (either in 12 or 24 hour format, depending on
setting of 24 HR button).

AM Indicator - This red LED glows to indicate AM hours (in 12 hour
format). (If flashing, power has been interrupted.)

PM Indicator - This red LED glows to indicate PM hours (in 12 hour
format). (If flashing, power has been interrupted.)

CB Indicator - This red LED glows when CB button is pressed in.

PA Indicator - This red LED glows when PA button is pressed in.

MON Indicator - This red LED glows when MON button is pressed in.

NB/ANL - This red LED glows when NB/ANL button is pressed in.
Indicator

AUTO - This red LED glows when the AUTO button has been pressed
Indicator in.

RECEIVE - This red LED glows when you are in the CB receive mode.
Indicator The linear LED Meter at the right lights up to indicate
the strength of the received signal.

TRANSMIT - This red LED glows when you are in the CB transmit mode.
Indicator The linear LED Meter lights up to indicate the relative
strength of your RF output signal.

SWR Indicator - This red LED glows when the SWR CAL button is pressed in.
The linear LED Meter lights up to indicate the SWR Cal
point or SWR reading (when in the transmit mode).

AM Indicator - Lights when you are in the AM CB mode of reception or
transmission.

LSB Indicator - Lights up when you are in the Lower Side Band mode of
reception or transmission.

USB Indicator - Lights up when you are in the Upper Side Band mode of
reception or transmission.

MEMORY - Lights up when you are in a Memory mode (Memory Scanning
Indicator or Memory Writing).

BUSY CH - Lights up when the BC/CC button has been set for Busy
Indicator Channel or to scan for busy channels.

CLEAR CH - Lights up when BC/CC button has been set for Clear Channel
Indicator or to scan for clear channels.

CH Indicator - This 2-digit 7-segment LED display will light up to show
you the channel you are operating on.

Clock Setting Controls:

Clock Function Switch - Slide to the desired setting.

AUTO SET - Use this position to set the Clock for automatic
turn on of the CB receiver by the Clock circuit.

RUN - Use this position for normal clock operation.

TIME SET - Use this position to set the Clock for normal time
keeping.

SEC - Use this position to display the actual second;
also use when setting the clock precisely (to hold
the seconds count or to reset seconds to :00).

FAST - Press this button to advance time rapidly (or when
in SEC mode, to set seconds to :00).

SLOW - Press this button to advance time slowly (or when
in SEC mode, to hold seconds count).

Front Panel Jacks:

MICrophone Jack - Connect the dynamic mic to this jack.

PHONES Jack - Plug in communications type headphones for private
listening, or in areas where background noise is
excessive (factories, at the scene of an accident or
fire etc.). When you plug in the headphones, it
automatically disconnects the internal speaker (or
external speaker).

Rear Panel:

ANTENNA Coax - Connect your CB antenna to this (SO-239 type, accepts
Connector PL-259 connectors).

SWR Control - This Calibration control is used when you set up the
Transceiver to check the SWR of your Antenna system.

PA Speaker Jack - Connect an 8-Ohm Public Address speaker to this jack
for PA use. We recommend RadioShack's 40-1244 or
40-1236, weatherized, rugged PA Speaker, as an ideal
unit for PA application.

EXTernal Speaker - If you want to use an external speaker, plug it into
Jack this jack. You should use a standard 8-Ohm type. When
a standard 1/4" (6.35 mm) phone plug is inserted into
this jack, the built-in speaker is automatically
disconnected.

13.8V DC Connector and Power Cable with in line fuse

To use this Transceiver in a vehicle, connect this cable to a source of
12-16 volts DC power, negative or positive ground. The Red wire with the
in-line fuse must be connected to the (+) side and the Black wire to the
(-) side.

AC Power Cord - Connect to a source of 120 volts, 60 Hz AC power.

Programming/Channel Keyboard:

MEMO WRITE Key - Press to enter a channel number into one of the five
Memories.

MODE Key - Press to set to the desired mode: AM, LSB or USB (as
indicated by lighted LED).

MEMO OUT Key - Press to read out the channel stored in a Memory.

BC/CC Key - Press to activate for Busy Channel (BC) or Clear Channel
(CC) mode of scanning.

MEMO SCAN Key - Press to scan channels loaded into Memory.

AUTO SCAN Key - Press for automatic scanning (searching for busy Channels
or Clear Channels).

DOWN Key - Press to step the functioning channel down (one press
will move channel down one number; holding the key will
cause the channel number to continue counting down).

UP Key - Press to step the functioning channel up (one press will
move channel up one number; holding the key will cause
the channel number to continue counting up).

Number Keys - Press to set the desired channel number. Also, the Keys
with sub-titles M1, M2, M3, M4 and M5 are for loading the
five Memories.

O/STOP Key - Press to stop AUTO SCAN or MEMO SCAN (also used to enter
the number "O").

Specifications Faxback Doc. # 46736

General:
Channels: ....... 40 Channels for AM, Upper side Band and Lower side Band,
utilizing Digital Circuitry.

Frequency Range: ................................ 26.965 MHz to 27.405 MHz

Frequency Control: ............... Digital (Phase Locked Loop) Synthesizer

Frequency Accuracy: ........................................... +/- 100 Hz

Operating Temperature Range: ....................... -30 to 43.3 degrees C

Power Requirements: ................ 13.8V DC (12-16 volts DC, negative or
positive ground) or 120V AC (60 Hz)

Antenna: ...................................... 50 Ohm (Coaxial connector)

Microphone: ......................................... 600 Ohm Dynamic Type

Speaker: ................................................ 8 Ohm, 3.5 Watts

Clock: ........................................ Digital Type (solid state)

Size (HWD): .................. 3.8 x 15.3 x 11.8 inches (9.7 x 39 x 30 cm)

Weight: ......................................... 13 lbs. (approx.) (6 kg)

Accessories: .................................. DC Cord with in-line Fuse,
Microphone and Microphone Hanger
Receiver:
Max Sensitivity (AM): ......................................... 0.3 microV
(SSB): ......................................... 0.2 microV

Sensitivity for 10 dB S/N (AM): ..................... 0.5 microV or better
(SSB): .................... 0.25 microV or better

AGC Figure of Merit for 10 dB Change in Audio Output: ...... AM/SSB, 90 dB

Overload AGC Characteristics from 10 mV to 100 mV: ...... AM/SSB, +/- 2 dB

Overall Audio Fidelity at 6 dB Down (AM): .................... 450-2100 Hz
(SSB): .................... 450-3500 Hz

Adjacent Channel Selectivity: .................................. AM, 70 dB

Image Rejection (42.6 MHz): ............................ Better than 80 dB

IF Rejection: ...................................................... 80 dB

Maximum Audio Output Power: ...................................... 6 Watts

Squelch Range: ................ AM/SSB, Adjustable from 0.5 microV to 1 mV

Receiver Clarifier Range: ........................... +/-1.0 kHz, variable

Battery Drain at no Signal: ....................................... 400 mA

Battery Drain at Max. Output Power: .............................. 1200 mA

AC Power Consumption:
At no Signal: ...................................... 28 Watts
At Max. Output Power: ...................................... 57 Watts

Transmitter:
Max. Output Power (AM): ..................................... 4 Watts SSB
(SSB): ..................................... 12 Watts PEP

Spurious Emission: ...................................... -70 dB or better

Modulation Frequency Response:
(1 kHz, O dB reference) 450 Hz to 2.5 kHz, EIA: ...... AM/SSB, -6 dB

Microphone Sensitivity:
For 50% Mod. (AM): .................................... 0.5 mV
For 4 Watts PEP (SSB): .................................... 0.5 mV

Microphone Amplifier Circuit:
Dynamic Range: ..................................... 60 dB

Battery Drain:
At no Modulation (AM): .................................. 2,100 mA
(SSB): .................................... 800 mA

At Max. Output Power (AM): .................................. 3,000 mA
(SSB): .................................. 2,500 mA
AC Power Consumption:
At no Modulation (AM): .................................. 65 Watts
(SSB): .................................. 45 Watts

At Max. Output Power (AM): .................................. 80 Watts
(SSB): .................................. 90 Watts

Public Address Amplifier:
Maximum Output Power: ............................................ 6 Watts

WARNING: To prevent fire or shock hazard, do not expose this Transceiver
to rain or moisture.

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

Reference # Cat.No. Description NP Part #
------------------------------------------------------------------------
11319340 1N60
11319373 1N60P
11319522 1S1555
Q14 XSTR 2SC2098 T0220AB 2TR0417
2TR0417
11344462 XSTR 3SK59 N-CH 3SK59
11389301 USE 4066B 4066BCN
10870111 4081
UNIT DISC IN 1980 AA0000X
TC1 TC3 TC4 TC5 CAP TRIMMER 20P C0965
L402 L404-409 10562577 COIL,CHOKE 18UH CA3182
L11 L12 10563096 COIL,RADIO FREQUENCY CA3488
L6 COIL NETWORK CA3931
L1 L14 COIL INDUCTOR 100UH CB2427
X1 CRYSTAL,10.240MHZ CX0368
10654622 BUSHING,FOR TELEPHONE WIR HB0705
10698355 PKG OF 5 HF1157
10698371 PKG OF 5 HF1178
10698488 PKG OF 5 HF1260
J404 J405 10726016 JACK SPEAKER J0840
10726016 INCLUDES NUT J0840
32 J401 10732956 JACK DIN J6572
10732956 FOR MIC J6572
34 J403 10732964 CONNECTOR 3P DC J6653
D713-715 10794436 LED,RED 3MM DIFFUSED L0963
REPLACED BY MA0111 M2367
10805398 MICROPHONE,WITH KNOB MA0111
11414166 MANUAL,SERVICE 21-1582 MS2101582
11290830 XEROXCOPY MU2101582
IC6 SN76600P VID CIR MX3336
IC5 IC511 USE MX7849 MX3778
REPLACED BY MX7849 MX3778
IC508 TC4010BP BUF MX4558
IC5 IC511 ICQ790 10912855 IC,TA78L09AP BIPOLAR MX7849
RY2 RELAY (TX/RX SWITCHING) R8088
11392750 IC,TA7222 PWR AMP 10 PIN TA7222
11121043 CORD,AC FLAT BROWN WB0021

 

Picture from Spew Radio Inc.

 

 

 




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