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Stonex SR35 External Radio

Name: Stonex SR35 External Radio
Brand: Stonex
SKU: B45-460215
Price: 2160.0 USD
Availability: InStock

StonexSKU: B45-460215

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$2,160.00 USD

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Specifications

Frequency Range: 410–470 MHz
Operating Modes: Transmitter, Receiver, Radio Repeater, Network Repeater
Transmission Power: 5 W / 22 W / 35 W selectable
Coverage: Up to 50 km
Channels: Up to 200 programmable
Protocols: Transparent EOT, Trimmark, Trimtalk, Satel
Modulation: GMSK, 4FSK
Channel Width: 12.5 / 25 kHz
Air Data Rate: 4800 / 9600 / 19200 bps
Serial Data Rate: 9600–115200 bps
Sensitivity: ≤ -114 dBm @ BER 10⁻³, 9600 bps
Interfaces: RS-232 (LEMO Spin), Bluetooth 2.0/4.0, TNC antenna port
Power Supply: 9–16 V DC, 85 W max @ 12V
Ingress Protection: IP67
Operating Temperature: -40°F to +167°F (-40°C to +75°C)
Weight: 4.40 lbs

Product Description

The Stonex SR35 is a high-power radio modem designed to extend RTK correction coverage for GNSS base and rover setups. With selectable transmission power from 5 W to 35 W, it reaches distances of up to 50 km. Multiple operating modes — transmitter, receiver, repeater, and network repeater — make it adaptable for a wide range of surveying and monitoring applications. The network repeater function bridges GSM and UHF by receiving RTK corrections through the integrated 4G modem and retransmitting them via radio.

The SR35 supports up to 200 programmable channels and is compatible with leading protocols (Trimtalk, Trimmark3, Satel, Transparent EOT). Configuration is simple through PC software or the dedicated Android app, while Bluetooth ensures quick connectivity. Its rugged IP67-rated housing protects against dust, water, and extreme temperatures.

In the Box

SR35 Modem
Cable with clamps (30-350072)
Cable (5pin Lemo/5pin Lemo/SAE to connect GPS to ext. radiomodem/ext.battery)
Cable to connect receiver and external radio
Holder for QC430/450A antenna on tripod (TRB1)
Soft bag for GNSS and controller (SB-100)

Our Return Policy

We will issue a refund in the original form of payment for merchandise that is unused & in original packaging within 14 days of purchase. Any defective merchandise can be exchanged within 30 days of purchase.

Exclusions:

Special Order items include Software, GPS, Total Stations, Utility Locators, or Leica Geosystems products.
We do not accept returns for replacement parts for any reason other than an error on our part.
Once an order has shipped, it cannot be cancelled. You may refuse the order upon delivery, in which case the standard return policy for the item will apply, and we will deduct the return shipping costs from your refund credit.

All merchandise returned after 14 days of purchase will have a 20% restocking fee & refund will only be available as store credit.

The customer is responsible for return
shipping of any returned products, some exclusions may apply.

We do not accept returns or cancellations for special ordered items.

Special Order items include GPS, Total Stations, Utility Locators, or Leica Geosystems products.

The Benchmark Advantage

Every product comes with Benchmark's lifetime support. If your confused on something, we have experts on staff ready to help with post-sale support.
Certified Repair Center with quick turnaround on warranty repairs.
We ship from 6 different locations to ensure quick delivery
Pickup at any of our local stores
Available to answer questions or take orders by phone at 866-342-7665 (8am-5pm, M-F)

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