The Trimble TDL-450H 430-470 MHz Radio Modem is a professional-grade UHF GNSS data radio engineered for demanding land surveying, construction, mapping, and RTK GNSS applications. Designed to deliver stable, long-range wireless data transmission, this radio modem is widely trusted by surveyors and geospatial professionals who require dependable base-to-rover communication in challenging field environments.
This unit is offered in good pre-owned condition, fully functional, tested, and ready for immediate deployment. The listing includes a complete operational kit, ensuring seamless integration into your existing GNSS workflow without the need for additional accessories.
Product Condition & Readiness
- Condition: Used / Pre-owned
- Operational Status: Fully tested, working, and ready to use
- Cosmetic Condition: Normal signs of professional use; no impact on performance
This Trimble radio modem has been carefully inspected to meet professional field standards, making it a cost-effective solution for surveyors seeking genuine Trimble hardware at a reduced price.
What’s Included in This Listing
This is a complete Trimble TDL-450H radio kit, eliminating compatibility concerns and reducing setup time:
- (1) Trimble TDL-450HX Radio Modem
- Model: TDL-450HX
- Part Number: ADL35-2
- Trimble P/N: 74451-65
- (1) Trimble Unity Gain Whip Antenna (450–470MHz, 0dB)
- Part Number: 51870-50-70
- (1) Trimble TDL450 Whip Antenna Adapter Cable (NMO to TNC)
- Part Number: 64451-00
- (1) Trimble Base Radio Data/Power Cable
- Part Number: 56659
- (1) Heavy-Duty Hardshell Carrying Case
Everything included is genuine Trimble equipment, ensuring maximum compatibility, durability, and signal reliability.
Designed for Professional GNSS & RTK Surveying
The Trimble TDL-450H series radio modems are built specifically for precision GNSS positioning systems, supporting RTK corrections transmission between base stations and rover receivers. Operating within the 430–470MHz UHF frequency band, this radio ensures robust signal penetration and consistent data flow even in difficult terrain or long-range survey environments.
Whether deployed as a base station radio or a rover communication unit, the Trimble ADL35-2 delivers reliable performance across a wide range of surveying and construction scenarios.
Key Performance Advantages
Reliable UHF Communication (430–470MHz)
The optimized UHF frequency range provides:
- Stable long-distance communication
- Improved signal penetration around obstructions
- Reduced interference in professional survey environments
Trimble-Grade Engineering
Built to Trimble’s exacting standards, this radio modem offers:
- Proven durability for daily field use
- High resistance to environmental stress
- Consistent data throughput for RTK corrections
Seamless GNSS Compatibility
The TDL-450H is compatible with many Trimble GNSS receivers and surveying systems, making it ideal for:
- RTK GNSS base stations
- Rover data link communication
- Survey control networks
Ideal Applications
This Trimble TDL-450H UHF radio modem is suitable for a wide range of professional applications:
- Land surveying & boundary surveys
- Construction layout & site positioning
- Topographic mapping
- Civil engineering projects
- RTK GNSS base and rover setups
- Machine control communication
- GIS data collection
Its versatility makes it an excellent choice for survey firms, contractors, engineering companies, and geospatial professionals.
Built for Field Durability
The Trimble ADL35-2 radio modem is housed in a rugged enclosure designed to withstand:
- Dust and debris
- Temperature fluctuations
- Field transportation and frequent deployment
The included hardshell carrying case further protects the equipment during transport and storage, ensuring long-term reliability.
Complete Antenna & Cabling Solution
This listing includes a Trimble unity gain whip antenna optimized for the 450–470MHz band, ensuring efficient signal transmission and reception. The NMO-to-TNC adapter cable allows flexible antenna mounting options, while the Trimble base radio power/data cable ensures reliable connectivity with compatible GNSS equipment.
Having all required components included significantly reduces setup time and ensures consistent field performance.
Why Choose This Used Trimble TDL-450H Radio Modem?
Cost-Effective Genuine Trimble Equipment
Purchasing pre-owned Trimble hardware allows you to:
- Reduce capital expenditure
- Maintain professional-grade performance
- Avoid compatibility risks associated with third-party radios
Proven Industry Standard
The TDL-450H series remains a trusted choice among surveying professionals worldwide due to its reliability, signal stability, and integration with Trimble GNSS ecosystems.
Ready-to-Deploy Kit
Unlike incomplete listings, this product includes everything needed for immediate field operation, no missing cables or adapters.
Technical Overview
- Frequency Range: 430–470MHz
- Radio Type: UHF GNSS data radio modem
- Model: TDL-450HX
- Variant: ADL35-2
- Trimble Part Number: 74451-65
- Antenna Type: Unity gain whip antenna (0dB)
- Use Case: RTK GNSS base/rover communication
Frequently Asked Questions
Is this Trimble TDL-450H radio modem fully functional?
Yes. The radio modem has been tested and is fully operational. It is ready for immediate use upon delivery.
What does “ADL35-2” mean?
ADL35-2 is the Trimble variant designation for the TDL-450HX radio operating in the 430–470MHz frequency range.
Is this radio suitable for RTK GNSS surveying?
Absolutely. This Trimble UHF radio modem is specifically designed for RTK GNSS base and rover communication.
Does this listing include all necessary accessories?
Yes. The package includes the radio modem, antenna, antenna adapter cable, power/data cable, and a protective carrying case.
Is the antenna optimized for this frequency range?
Yes. The included Trimble unity gain whip antenna is designed for 450–470MHz operation, ensuring optimal signal performance.
Can this radio be used as a base station radio?
Yes. The Trimble TDL-450H is commonly used as a GNSS base station radio and is also suitable for rover applications.
Is this an original Trimble product?
Yes. All components included in this listing are genuine Trimble equipment.
Does the used condition affect performance?
No. Normal cosmetic wear does not impact the radio’s operational performance or reliability.
Who should buy this Trimble radio modem?
This product is ideal for professional surveyors, construction companies, engineers, and GIS professionals who require reliable GNSS data communication.
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