R.L. Drake R-4C HF Communications Receiver

Technical Specifications

• Frequency Coverage Matrix: Standard amateur radio HF coverage across 80, 40, 20, 15, and 10 meters. Features 15 accessory crystal positions for custom 500 kHz frequency bands.
• Operating Reception Modes: SSB (USB/LSB), CW, AM, and RTTY loops.
• Circuit Design Topology: Hybrid vacuum tube and solid-state passband architecture delivering high dynamic range filtering.
• Selectivity Matrix Options: Factory 8-pole crystal filter: 2.4 kHz bandwidth. Features 4 front-panel switchable accessory slots for drop-in narrow CW filters.
• Passband Tuning Mechanism: Variable IF passband tuning control for adjusting filter windows to reject adjacent-channel interference.
• AGC Performance Configurations: Selectable options for Fast, Slow, or Off response paths.
• Frequency Display Readout: High-precision analog dial configuration tracking down to 1 kHz tuning resolution.
• Power Input Interface: 120V AC input line lines.

Station Role

The R.L. Drake R-4C acts as a classic HF communications receiver platform on the W8USR operating deck. Frequently operated in tandem with its matching T-4XC transmitter assembly via transceive injection cabling, it provides operators with a vintage analog listening post for monitoring classic HF nets and CW contacts.

History with Radio W8USR

The R.L. Drake R-4C is preserved within the W8USR station lineup as a premium example of American-made ham radio engineering from the 1970s. Kept in excellent working order, it provides a tactile and warm analog operating experience, connecting the station's active operations directly to the classic traditions of amateur radio history.