CB Radio >
TRE-2639
[Industrial Metal Chassis & 4-Scale Meter] Features a heavy-duty, metal-reinforced front panel engineered for high-vibration commercial cabs. The large analog instrument displays S-Meter, Modulation %, Power Output, and SWR in real-time.
[Commercial Noise Suppression Suite] Integrated with Noise Filter (GNF) alongside standard ANL/NB circuitry. Formulated to isolate operators from heavy diesel engine chatter, road vibration, and atmospheric static.
[Automatic SWR Hardware Protection] Equipped with a continuous-monitoring Automatic SWR Circuitry and front-panel LED alert light. Instantly detects antenna system mismatching to prevent final transistor damage during operation.
[Dynamic Transmission Control Suite] Provides precision tactile adjustments for Mic Gain, RF Gain, Variable Power, and an independent Talkback circuit, allowing seamless calibration for diverse mobile and base environments.
[Tactile Interface and High-Visibility Display] Features dedicated mechanical switches, a 3-position Quick CH19 toggle switch, and a 5-digit frequency counter. Integrated dimmer controls ensure clear readability under direct sunlight or pitch-black night driving.
CB Radio >
TRE-2639
- Tactile Knobs, Instant Control
- GNF Noise Filter
- Built-in SWR Bridge
- SWR Alert LED
- Large S-Meter/Modulation/Power/SWR Meter
- Switchable NB/ANL
- Variable Dimmer
- 4 pin front panel mic jack
- Superior Signal Reception
- Variable Talkback
Product Details
Texas Ranger TRE-2639: Heavy-Duty AM CB Mobile Transceiver
The Texas Ranger TRE-2639 is a commercial-grade, high-performance AM CB radio engineered specifically for professional long-haul truck drivers, fleet operators, and off-roaders who require uncompromised chassis durability and precise analog monitoring.
Ruggedized Fleet Engineering
Built to withstand the punishing environments of commercial transport, the TRE-2639 features an industrial metal-reinforced front panel that resists impacts and prolonged cabin vibrations. The oversized, illuminated four-scale analog meter delivers instant diagnostic status of signal strength, modulation depth, RF output, and SWR at a single glance.
Advanced Acoustic Isolation
Clear highway communication requires aggressive noise filtering. The TRE-2639 incorporates a specialized Noise Filter (GNF) combined with Automatic Noise Limiter (ANL) and Noise Blanker (NB) circuits. This multi-stage acoustic suite aggressively suppresses ambient diesel clatter and road hum, delivering consistent, highly intelligible voice reception.
Continuous Transmitter Safeguards
Operational downtime is minimized via an integrated Automatic SWR monitoring system. The radio continuously checks antenna matching and activates a dedicated front-panel warning LED if a high SWR fault is detected, safeguarding internal circuitry from destructive power reflections without requiring manual calibration.
Tactile Ergonomics for Safe Operation
Designed for non-distracted, eyes-on-the-road driving, the TRE-2639 replaces complex digital menus with heavy-duty tactile knobs and independent mechanical toggle switches. Featuring variable power adjustments, adjustable Talkback for real-time voice monitoring, and a 3-position Quick CH19 toggle switch, this transceiver provides instant control under any operating condition.
What’s in the box
TRE-2639 radio transceiver
Dynamic Microphone
Mounting bracket with hardware
Fused DC Power Code
Microphone hanger with hardware
Instruction Manual
Specification
General:
|
Model: TRE-936FFB |
Channels: 40 |
Frequency Range: 26.965 ~ 27.405 MHz |
|
Emission: AM |
Frequency Control: Phase-Lock-loop (PLL) Synthesizer |
Frequency Stability: 0.00% |
|
Temperature Range: -30°C to +50°C |
Antenna Impedance: 50 Ohms |
Input Voltage: 13.8V DC |
|
Weight: 4.2 lbs |
Size: 7- 3/8” (W) x 8- 3/4” (D) x 2- 1/4” (H) |
|
Transmitter:
|
RF Power Output: 4W |
Spurious Emission: -60 dB |
Audio Distortion: 10% |
Microphone: Dynamic |
|
Frequency Response: 300 to 2500 Hz |
|||
Receiver:
|
Sensitivity for 10 dB (S+N)/N: < 1.0 uV |
Squelch Sensitivity: < 0.5 uV |
Image Rejection: More than 65 dB |
|
Audio Response: 300 to 2500 Hz |
Audio Power Output: 3W @ 10% Distortion |
AGC Figure of Merit: 100 mV for 10dB Change in Audio Output |
Specification
| General: | |
| Model | TRE-936FFB |
| Channels | 40 |
| Frequency Range | 26.965 ~ 27.405 MHz |
| Emission | AM |
| Frequency Control | Phase-Lock-loop (PLL) Synthesizer |
| Frequency Stability | 0.00% |
| Temperature Range | -30°C to +50°C |
| Antenna Impedance | 50 Ohms |
| Antenna Connectors | Standard SO-239 type |
| Input Voltage | 13.8V DC |
| Size | 7- 3/8” (W) x 8- 3/4” (D) x 2- 1/4” (H) |
| Weight | 4.2 lbs. |
TRANSMITTER: | |
| RF Power Output | 4W |
| Spurious Emission | -60 dB |
| Audio Distortion | 10% |
| Frequency Response | 300 to 2500 Hz |
| Microphone | Dynamic |
RECEIVER: | |
| Sensitivity for 10 dB (S+N)/N | < 1.0 uV |
| Squelch Sensitivity | < 0.5 uV |
| Image Rejection | More than 65 dB |
| AGC Figure of Merit | 100 mV for 10dB Change in Audio Output |
| Audio Power Output | 3W @ 10% Distortion |
| Audio Response | 300 to 2500 Hz |
Technical Specifications
Operating Modes: AM Only (40 Channels)
Chassis Construction: Metal-Reinforced Front Panel
Metering Matrix: S-Meter, Modulation %, RF Power, SWR
Emergency Intercept: 3-Position Quick CH19 Toggle Switch
Noise Circuitry: GNF (Noise Filter), NB, ANL
Audio Circuitry: Variable Talkback, Variable Mic/RF Gain
|
1. MICROPHONE JACK |
2. MIC GAIN CONTROL |
3. ON/OFF VOLUME CONTROL |
4. SQUELCH CONTROL |
5. RF GAIN CONTROL |
|
6. SWR CAL CONTROL |
7. S-RF/CAL/SWR SWITCH |
8. TALKBACK CONTROL |
9. CHANNEL SELECTOR |
10. FRONT PANEL METER |
|
11. TX/RX LED |
12. FREQUENCY COUNTER |
13. DIM/BRT SWITCH |
14. COUNTER OFF |
15. PA/CB SWITCH |
|
16. NB/ANL SWITCH |
17. ROGER BEEP SWITCH |
18. CH19/NORMAL SWITCH |
19. CHANNEL DISPLAY |
|
1. ANTENNA |
2. DC POWER |
3. PA SP |
4. EXT. SP |
Controls and Indicators
| 1. MICROPHONE JACK | 2. MIC GAIN CONTROL |
| 3. ON/OFF VOLUME CONTROL | 4. SQUELCH CONTROL |
| 5. RF GAIN CONTROL | 6. SWR CAL CONTROL |
| 7. S-RF/CAL/SWR SWITCH | 8. TALKBACK CONTROL |
| 9. CHANNEL SELECTOR | 10. FRONT PANEL METER |
| 11. TX/RX LED | 12. FREQUENCY COUNTER |
| 13. DIM/BRT SWITCH | 14. COUNTER OFF |
| 15. PA/CB SWITCH | 16. NB/ANL SWITCH |
| 17. ROGER BEEP SWITCH | 18. CH19/NORMAL SWITCH |
| 19. CHANNEL DISPLAY |
| 1. ANTENNA | 2. DC POWER |
| 3. PA SP | 4. EXT. SP |
