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Ad-hoc Digital Two Way Portable Millitary Radios

Model: Defensor-T4

Defensor-T4 is designed to support Ad Hoc to wireless connect with Defensor base stations for communication. Defensor-T4 makes a reliable and secured communication radio to ensure you to operate it anywhere. The radio also comes with a GPS navigation function which allows you to locate the caller with direction and distance on the radio's screen.

Product Description


➢Rugged & Reliable

Defensor-T4 water and dust proof rating is IP67, which ensures outstanding performance even under harsh environments.

➢Secure Communication

IFLY military tactical communications system owns the independent intellectual property rights of the single frequency relay technology, which makes it difficult for hackers to monitor the voice communication. Defensor-T4 also supports customized voice encryption to meet users needs of multiple levels security.

➢Supports Wireless Ad Hoc Networking

Wirelessly connect with Defensor base station. If one base station moves away from the network or malfunctions, it will automatically route to another Defensor base station to guarantee link continuity.

➢Smaller, Lighter

The Defensor-T4 is 5*2.2*1.2inches, Weighing 10.6oz

➢Long Battery Life

In digital mode, the Defensor-T4 can operate for approximately 16 hours under a duty cycle of 5-5-90.

➢GPS Positioning

Built-in GPS/Beidou satellite module. The positioning information is initiated when a call is taken, and software in command center will display these each handset's GPS information.

IFLY Handheld two way radios


General Transmitter
Frequency 136-174/350-390/400-470Mhz RF Power 4W/1W
Channel Interval 25khz(Digital), 12.5/25Khz(Analog) Frequency Stability ≤0.23X10-7
Adjacent Channel Power

≤-62dB (±12.5KHz)

≤-79dB (±25KHz)

Capacity Max 200ch/Cell Power Ratio of Transient Switching Adjacent Channel

≤-55.8dB (±12.5KHz)

≤-79.7dB (±25KHz)

Antenna Impedance 50Ω
Dimension (HxWxD) 130X56X31mm(not inc. antenna) 4FSK modulation frequency deviation error ≤1.83%
Weight 300g 4FSK Transmission BER ≤0.01%
Battery 2450mAh/3250mAh Spurious Emission(Antenna Port)

9khz~1GHz: -39dBm

1GHz~12.75Ghz: ≤ -34.8dBm

Digital Vocoder Type NVOC
Battery Life 25hours(3250mAh) Spurious Emission(Host)

30Mhz~1GHz: ≤-40dBm

1GHz~12.75GHz: ≤ -34.0dBm

Operation Voltage DC7.4V Environment
Receiver Operating Temperature -20°C  ~ +55°C
Digital Sensitivity (5% BER) -122dBm Storage Temperature -40°C  ~ +65°C
Adjacent Channnel Selectivity ≥70dB Operating Humidity 30% ~ 93%
Intermodulation ≥70dB Storage Humidity ≤ 93%
Spurious Response Rejection ≥75dB GNSS
Blocking ≥90dB Positioning Support GPS/BDS
Co-channel suppression ≥-8dB TTFF(Time To First Fix) Cold Start <1 minute
Spurious Emission(Host)

30Mhz~1GHz: ≤-61.0dBm

1GHz~12.75GHz: ≤ -51.0dBm

TTFF(Time To First Fix) Hot Start <10 seconds
Spurious Emission(Antenna)

9kHz~1GHz: ≤-65.3dBm

1GHz~12.75GHz: ≤ -55.0dBm

Horizontal Accuracy <10metres


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