The Marconi IFR Aeroflex 6427 Power Head is a RF power measurement component engineered for integration with IFR and Aeroflex power meter systems. It delivers accurate power readings across extended frequency spectra, supporting the testing and maintenance of communication systems, avionics, and RF equipment in production and field environments.
Technical Specifications
Power Measurement & Output Protection
• Reverse power protection rated to 50 W from a 50 Ω source, or 25 W from a source with VSWR of 5:1
• Protection circuit resettable via front panel or GPIB/RS-232 interface
Frequency Coverage
Compatible power meters extend measurement capability to 26.5 GHz (6203 model) and 46 GHz (CPM46 model), with signal generators supporting ranges up to 2.4 GHz.
Power Level Performance
Compatible measurement systems support power ranges from -65 dBm to +44 dBm, with signal generators rated from -137 dBm to +25 dBm output.
– Key Features
• Reverse polarity protection with manual reset capability
• GPIB/RS-232 control integration for automated test systems
• Field-replaceable architecture for reduced downtime
• Designed for harsh operational environments in avionics and RF test facilities
– Typical Applications
• Communication system acceptance and field testing
• Avionics RF equipment validation
• Radio frequency power verification in production environments
• Maintenance and troubleshooting of RF transmission systems
– Compatibility & Integration
The 6427 Power Head integrates with the Aeroflex IFR Marconi 2023/2024/2025 power meters and the CPM46 measurement system. It operates as a measurement front-end with compatible base units, inheriting their frequency coverage and dynamic range capabilities for multi-band RF testing applications.

















