Brand: KENWOOD
Category: Other
Document Type: Manual
Language: EN
Manual for SM-230
Uploaded: Nov. 21, 2025, 6:14 p.m.
Warranty Information
The warranty period is 1 year from the date of purchase.
SM-230 Station Monitor - Operation Summary
The KENWOOD SM-230 is a versatile station monitor designed for radio communication enthusiasts. It offers multiple functions, including:
- Band Scope: Visualize received signals across three selectable bandwidths (50 kHz, 200 kHz, 500 kHz) at three scan speeds.
- Dual Watch Marker: When used with the TS-950, this feature displays reception frequency positions for simultaneously received signals.
- Oscilloscope: Observe signal waveforms up to 150 MHz with high sensitivity (10 mV/div) and a wide frequency characteristic (DC-10 MHz). It can also display IF waveforms from the TS-950.
- Two-Tone Generator: Provides 1,000 Hz and 1,575 Hz signals for transceiver MIC AMP adjustment.
- RTTY Cross-Pattern Function: Aids in tuning RTTY reception by displaying cross-patterns.
Ensure proper hook-up and initial setup as described in the manual sections for each function to maximize its utility.
Troubleshooting and error codes
| Problem | Cause | Remedy |
|---|---|---|
| Even when POWER switch is turned on, LED does not light up, and nothing appears on CRT. |
1. Unit is not securely plugged into the AC outlet. 2. Fuse is burnt out. |
1. Plug cord securely into outlet. 2. Call service center for fuse replacement. |
| POWER LED is lit up, but nothing appears on CRT. |
1. INTENSITY knob is turned too far down. 2. <control> knob is turned all the way to one extreme. |
1. Turn INTENSITY knob clockwise. 2. Turn <control> knob to center. |
| Beam trace is out of focus, OR beam trace is tilted. |
1. FOCUS or ASTIG adjustment is off. 2. TRACE ROTATION adjustment is off. |
1. Adjust FOCUS or ASTIG knobs as needed. 2. Adjust TRACE ROTATION knob as needed. |