The manual provides installation instructions for a carrier operated relay kit in the MR 50/60 and FM 150/160 series equipment, including a schematic diagram for setup and details on adjusting the relay for optimal sensitivity. It also covers troubleshooting tips, such as modifying the automatic hold and manual reset functions, and provides a parts list for reference.
Manual Overview
The Hammarlund Carrier Operated Relay Kit, part number PL 538260-G1, is designed for installation in the MR 50/60 and FM 150/160 series equipment. It is not recommended for mobile service due to voltage variations. The relay operates by amplifying and rectifying thermal noise in the FM receiver, producing a variable DC voltage that controls the relay’s operation. When a carrier signal is received, the DC voltage decreases, causing the relay to energize. The kit includes a single adjustment for sensitivity, controlled by adjusting R4. With no signal, the relay is adjusted to just de-energize, and sensitivity can be reduced by applying a strong signal and adjusting R4 until the relay operates. The manual also describes an automatic hold and manual reset modification for maintaining the call lamp on MR-50X and MR-60X receivers. The schematic diagram provides detailed guidance for installation and component connections.
Quick Issues Covered
- Adjust R4 for relay sensitivity in MR 50/60, FM 150/160.
- Carrier relay power-up failure due to mobile voltage variations.
- Refer to schematic for circuit tracing and component connections.
Overview
The product is a Carrier Operated Relay Kit designed for installation in the MR 50/60 and FM 150/160 series equipment. The manual provides installation instructions, theory of operation, adjustment guidelines, and a modification for automatic hold and manual reset.
Specifications
Refer to the PDF for details.
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
The installation of the carrier operated relay kit in the MR 50/60 and FM 150/160 series equipment requires referring to the schematic diagram provided. The installation is not recommended for mobile service due to voltage variations. There is an adjustment process for the carrier operated relay: with no signal input, adjust the control (R4) to energize the relay and then back off until it de-energizes for the most sensitive setting. Sensitivity can be reduced by applying a strong signal and adjusting R4 accordingly. There is also an automatic hold and manual reset modification for the call lamp in MR-50X and MR-60X monitor receivers.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
The source does not contain any explicit safety warnings or precautions.
Download INSTRUCTIONS Manual (PDF – 181.9 KB)
Hammarlund MR-50/60 Relay Kit Installation Instructions: Guide for proper installation and setup of the relay kit. PDF size: 181.9 KB.
- Brand: Hammarlund-mr-50-60-relay-kit-installation
- Model: INSTRUCTIONS
- Type: Manual
- File size: 181.9 KB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Download INSTRUCTIONS manual (PDF)
Hammarlund MR-50-60 Relay Kit Installation Overview
The Hammarlund MR-50-60 Relay Kit is designed to enhance the performance and reliability of your Hammarlund communication equipment. This relay kit provides efficient switching capabilities for the MR-50 and MR-60 models, ensuring seamless signal routing and improved operational stability. Ideal for radio enthusiasts and technicians, the kit simplifies maintenance and upgrades by offering a straightforward installation process.
Main Features and Specifications
- Compatible with Hammarlund MR-50 and MR-60 models
- High-quality relay components for reliable switching
- Compact design for easy integration into existing equipment
- Durable construction to withstand regular use and environmental factors
- Includes all necessary hardware and detailed installation instructions
- Improves signal clarity and reduces switching noise
Basic Usage and Operation Tips
Before installation, ensure the equipment is powered off and disconnected from any power sources. Follow the step-by-step instructions provided in the manual carefully to avoid damage. Once installed, verify all connections are secure and test the relay switching function by cycling through operational modes. Regularly check for any loose wiring or signs of wear to maintain optimal performance.
Troubleshooting and Maintenance Notes
If you experience intermittent signal issues or relay failure, first inspect the relay contacts for corrosion or dirt buildup. Clean contacts gently with a contact cleaner if necessary. Verify that all wiring connections are tight and correctly positioned. Replace the relay if mechanical failure is suspected. Routine maintenance includes periodic inspection and cleaning to prevent dust accumulation and ensure long-term reliability.
Safety Reminder
Always disconnect the device from power before attempting installation or maintenance. Use appropriate personal protective equipment and handle electronic components with care to avoid electric shock or damage. Follow all safety guidelines outlined in the manual to ensure safe and effective use of the relay kit.
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