Samyung Srg-150 Dn Service Manual -

Echo Averaging: A processing feature that detects targets that remain stable over multiple scans (like ships) while suppressing random noise (like sea clutter).

Watchman Mode: An energy-saving feature where the radar transmitter turns off for a set period (e.g., 5 minutes) and then wakes up to scan for a minute. If a target enters a guard zone, an alarm sounds.

Aligning the master clock to exactly 10.000 MHz to prevent frequency drift. BFO (Beat Frequency Oscillator) Tuning: Adjusting for optimal carrier suppression in J3E mode. Transmission Power Leveling:

Troubleshooting & Maintenance: Dedicated chapters provide logic trees for diagnosing issues with Digital Selective Calling (DSC) message reception or power supply fluctuations (DC 24V ±15%). Maintenance and Modern Integration Samyung Srg-150 Dn Service Manual

INSTRUCTION MANUAL. Page 1. INSTRUCTION. MANUAL. MF/HF SSB. RADIO. EQUIPMENT. SRG-150DN/SRG-250DN. FCC Report SRG-150DN Operation Manual | PDF | Power Supply - Scribd Echo Averaging: A processing feature that detects targets

Body:

Power Supply: DC 24V ± 15%, with a consumption of approximately 15A during transmission. Aligning the master clock to exactly 10

The service manual details several critical PCB (Printed Circuit Board) assemblies that manage the signal flow: Exciter Unit:

2. Key Technical Features

A. Radar Performance & Transmission

High Definition Display: Typically features a 15-inch (38 cm) high-brightness CRT or high-resolution LCD monitor (depending on the specific sub-version), capable of displaying targets in 8 or 16 shades of green/amber to distinguish target intensity.
Transmission Power: Generally outputs 12 kW (Kilowatts). This power level provides a well-balanced mix of detection range for distant landmasses and sensitivity for small, weak targets like buoys or small fishing boats.
Tuned Receiver: Features a built-in tuning indicator and automatic frequency control (AFC) to ensure the receiver stays perfectly tuned to the magnetron frequency, maximizing sensitivity.