This manual introduces the Kenwood R-820 Communications Receiver, describing its high‑performance HF amateur‑band capabilities, supported modes (SSB, CW, AM, RTTY) and key features such as double‑tuned circuits, variable bandwidth IF, and notch filtering. It also lists the included accessories and safety precautions for reliable long‑term use.
Installation instructions cover antenna connections, power requirements (AC 100‑240 V or optional 12‑16 V DC), speaker and headphone wiring, and grounding. Subsequent sections detail front‑panel controls, connector functions, filter usage, maintenance procedures, and troubleshooting tips to keep the receiver operating at peak performance.
| Supported Modes | SSB, CW, AM, RTTY |
|---|---|
| Antenna Impedance | 50 Ω – 75 Ω |
| AF Output Load | More than 1.5 Ω, 10 % distortion |
| AF Load Impedance | 4 Ω – 18 Ω |
| Power Supply (AC) | 100 V, 120 V, 220 V, 240 V, 50/60 Hz |
| Dimensions (W × H × D) | 13‑1/8" × 6‑0/1/8" × 13‑3/18" (≈335 mm depth) |
| Weight | 12 kg (≈28.4 lb) |
The receiver is designed for a 50 Ω – 75 Ω unbalanced antenna; using other impedances may degrade performance.
The R‑820 supports SSB, CW, AM, and RTTY modes.