Steel Enclosure RF Equalizer FREQ MHz Boost dB Diff BNC 5x4x3 w/ Power Supply

Steel Enclosure RF Equalizer FREQ MHz Boost dB Diff BNC 5x4x3 w/ Power Supply

This is a custom-built steel enclosure measuring approximately 5x4x3 inches housing a self-contained RF equalizer circuit assembly. The front panel features labeled controls including a FREQ. MHz frequency selector with a numeric dial display, a BOOST DB rotary 10-turn potentiometer, and a set of four BNC connectors grouped under a DIFF (differential) label. The side panel provides an additional panel-mount BNC output and a 4-pin circular connector. The rear carries a standard IEC AC inlet, a fuse holder, and a red power indicator LED. Internally the enclosure is populated with a PCB containing RF circuitry including inductors and passive components, along with several discrete assemblies described below.

Specifications & What's Included

• Enclosure material: Steel, gray hammertone finish
• Enclosure dimensions: approximately 5 x 4 x 3 inches
• Front panel: EQUALIZER label; FREQ. MHz numeric dial/counter; BOOST DB 10-turn rotary potentiometer; DIFF label with 4x BNC connectors (differential inputs)
• Side panel: Panel-mount BNC output connector; 4-pin circular connector
• Rear panel: IEC AC power inlet; fuse holder; red power indicator LED
• Internal power supply: Computer Products / Boschert model HM530
• PSU output: 5V DC, 3000 mA (3A)
• PSU input: 115 VAC, 50/400 Hz, 320 mA
• Line filter: Corcom brand (visible on internal filter module)
• Internal opto coupler circuit (5V/3A)
• IC test fixture PCB (internal)
• Two 10-turn potentiometers with dials (internal)
• RF equalizer PCB with inductors and passive components
• Sold as-is — no accessories, no external cables included beyond what is shown in photos

Applications

Bench-built RF equalizer enclosures of this type are used in signal conditioning, cable equalization, and test/measurement setups where a frequency-dependent gain adjustment (boost in dB at a set frequency in MHz) is needed to compensate for cable loss or frequency roll-off in a signal path. The differential BNC input configuration suggests use with balanced or differential RF or video signal sources. The built-in regulated 5V supply and opto coupler indicate this assembly was likely part of a larger test bench, ATE (automated test equipment) setup, or a production-line IC testing fixture. The IC test fixture board inside is consistent with a functional tester or parametric test jig from a production or R&D environment, probably dating from the 1980s or early 1990s based on the construction style, Corcom line filter generation, and Computer Products Boschert HM530 power supply. This unit is being sold for parts, component harvesting, or as the basis for a repair or rebuild project.