The Viavi IFR Aeroflex 3515AR is a portable radio communications test set engineered for signal generation, modulation analysis, and spectrum analysis across diverse radio systems. Field technicians and radio engineers deploy this instrument to verify performance and compliance of communication equipment through stand-off, over-the-air, and direct-connect testing methods.
Technical Specifications
Frequency Coverage: 2 MHz to 1 GHz (extended to 2 GHz for select configurations).
Modulation Support: AM, FM, SSB, CW.
Power Measurement: Up to 10 watts direct; up to 200 watts with external attenuator.
Receiver Performance: Noise floor 90 dB.
Audio Bandwidth: 300 Hz to 3.4 kHz.
Channel Spacing: 25 kHz, 12.5 kHz selectable.
Operating Temperature: −20°C to +50°C.
Battery Operation: Up to 5 hours continuous; 4-hour recharge cycle.
– Key Features
• Multiple Test Modes: Stand-off testing of tactical radios without direct connection; over-the-air verification via antenna; direct-connect parameter measurement.
• Antenna & Cable Analysis: VSWR, Distance to Fault (DTF), Return Loss, and Cable Loss measurements with failure isolation to centimeter-level accuracy.
• Digital Radio Verification: Non-intrusive over-the-air testing of EPLRS, SADL, and P25 platforms without encryption or COMSEC requirements.
• Integrated Test Instruments: Spectrum analyzer, oscilloscope, RF signal generator, RF receiver, modulation meters, SINAD/distortion meter, audio generators, RF power meters, audio frequency counter, RSSI indicator, and DCS generator.
• Automated Testing: Test script language for procedure automation, instruction incorporation, and data collection.
– Typical Applications
VHF ground and airborne communications (SINGGARS); UHF airborne and SATCOM/SLOS/BLOS systems; public safety and APCO-P25 networks; conventional AM/FM communications; audio and intercom systems; force protection radios. Supports PRC-117F, PRC-148, ARC-164, and ARC-210 platforms among others.
– Compatibility & Integration
Direct-connect testing eliminates the need for radio component disconnection. Non-intrusive operation preserves operational security posture during field evaluation.

















