Marconi IFR Aeroflex 2965A – Radio Communications Test Set

The Marconi IFR Aeroflex 2965A is a portable radio communications test set that integrates signal generation, RF spectrum analysis, and audio measurement into a single instrument for AM, FM, and SSB system validation. Designed for benchtop and field deployment, it delivers 1 W nominal RF output across 100 kHz to 1 GHz, with handling capability to 150 W on the N-Type connector. The instrument combines a fast, high-resolution spectrum analyzer with a tracking generator for filter alignment and mixer characterization, plus an FFT analyzer for audio-domain signal examination.

– Technical Specifications

• Frequency Range: 100 kHz to 1 GHz (usable to 1.1 GHz)
• RF Power Output: 1 W nominal
• RF Power Handling: Up to 150 W (N-Type socket) with visual and audible overload protection; 10 W max (TNC socket)
• Output Impedance: 50 Ω nominal
• VSWR: ≤1.2:1 to 500 MHz; ≤1.3:1 to 1 GHz on N-Type (typ. 1.2:1); typ. 1.3:1 at 900 MHz on TNC
• Carrier Off-State: Less than −120 dBm
• Spurious Suppression: Better than −30 dBc (harmonics to +7 dBm); better than −45 dBc (100 kHz–36 MHz); better than −50 dBc (above 36 MHz)
• Residual FM (CCITT weighted): Less than 6 Hz RMS to 575 MHz; less than 12 Hz RMS to 1 GHz
• Phase Noise: Better than −114 dBc/Hz to 575 MHz; better than −108 dBc/Hz to 1 GHz

– Key Features

• Real-time RF spectrum analyzer with flexible marker-based measurements and resolution bandwidth control
• Tracking generator with variable level offset for filter and mixer alignment
• SSB demodulation with CW and dual-sideband analysis; carrier and alternate sideband suppression to 50 dBc; FFT-based audio analysis
• Cell site simulation with signaling protocol generation for network verification
• Optional GSM upgrade (P-GSM, E-GSM, user-defined variants)

– Typical Applications

• AM/FM/SSB transceiver alignment and certification
• RF component and subsystem characterization
• Cell site simulator and protocol testing
• Audio distortion and intermodulation analysis via FFT

– Compatibility & Integration

Dual RF connectors (N-Type and TNC) with asymmetric power handling. Audio input path supports external signal injection for FFT analysis.