1. Product Overview
The Astibym Portable SWR/Power Meter is a compact and convenient device designed for measuring Standing Wave Ratio (SWR) and power output for CB radio antennas. It features a full-scale output signal and an automatic level control voltage display, ensuring safe and efficient operation. Constructed from durable metal, this meter is built for reliability and a long service life.
Key Features:
- Lightweight and portable design.
- Full-range output signal for comprehensive testing.
- Automatic level control voltage display for enhanced safety.
- Durable metal construction for extended lifespan.
- Measures operational loss values to ensure system safety.

Figure 1: Front view of the Astibym SWR/Power Tester, showing the meter display with SWR, PWR, MOD, VOLT, and DISC scales.
2. Safety Information
Always handle the device with care. Ensure proper connections are made before powering on. Do not expose the device to extreme temperatures or moisture. Disconnect power before cleaning or maintenance. Keep out of reach of children.
3. Setup
Before operating the SWR/Power Meter, ensure all necessary components are available and in good condition.
- Unpacking: Carefully remove the SWR/Power Meter from its packaging. Inspect for any signs of damage.
- Power Connection: Connect the meter to a suitable power source (battery-powered, as per specifications). Ensure correct polarity if using external power.
- Antenna Connection: Connect your CB radio antenna to the designated input port on the meter. Use appropriate coaxial cables and connectors.
- Radio Connection: Connect your CB radio's output to the designated input port on the meter.

Figure 2: The Astibym SWR/Power Tester shown with its connection cable, illustrating how it connects to other equipment.
4. Operating Instructions
This section details how to operate your Astibym SWR/Power Meter to measure various parameters.
4.1. Setting Received Display Parameters
- Press the [Func] button to access the setting menu and activate the extended menu.
- Rotate the [Select] knob to configure menu item No. 060 [MTR ARX SEL].
- Rotate the adjustment knob to select the external instrument display:
- SIG: Input signal display.
- CTR: Discriminator center meter.
- VLT: Battery voltage.
- N/A: Empty.
- FS: 1MA full-scale standard calibration of the external instrument output signal.
- Stop: Turn off the meter.
- Press the [Func] button to save the setting and exit the parameter menu.
4.2. Setting Transmitted Display Parameters
- Press the [Func] button to access the setting menu and activate the extended menu.
- Rotate the [Select] knob to configure menu item No. 061 [MTR ATX SEL].
- Rotate the adjustment knob to select the external instrument display:
- PWR: Transmitted power.
- (Other options may be available depending on the device firmware.)
- Press the [Func] button to save the setting and exit the parameter menu.

Figure 3: Close-up view of the meter's display, showing the various scales and indicators for SWR, power, modulation, voltage, and discriminator.
5. Maintenance
Proper maintenance ensures the longevity and accuracy of your SWR/Power Meter.
- Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents.
- Storage: Store the meter in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Battery Care: If the device is battery-powered, ensure batteries are replaced when low or removed if storing for extended periods to prevent leakage.
- Inspection: Periodically inspect cables and connectors for wear or damage.
6. Troubleshooting
If you encounter issues with your SWR/Power Meter, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter not powering on. | Low or dead battery. Incorrect power connection. | Replace batteries. Verify power cable is securely connected. |
| Inaccurate readings. | Loose antenna/radio connections. Damaged cables. Incorrect settings. | Check all connections. Inspect cables for damage. Review operating instructions for correct parameter settings. |
| Display is blank or frozen. | Software glitch. Power issue. | Turn off the device, wait a few seconds, then turn it back on. Ensure stable power supply. |
If the problem persists after attempting these steps, please contact customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Astibym |
| Model Number | Astibymrt95iwx2zv575 |
| Product Dimensions (L x W x H) | 1 x 1 x 1 cm (approximately 0.39 x 0.39 x 0.39 inches) |
| Item Weight | 300 grams (approximately 0.66 pounds) |
| Power Source | Battery Powered |
| Color | Black |
| Compliance | CE Marked, RoHS Compliant |
| Manufacturer | Astibym |
| Country of Origin | China |
8. Warranty and Support
This product comes with a standard manufacturer's warranty. For specific warranty details, please refer to the documentation included with your purchase or contact the retailer.
For technical support or inquiries, please contact Astibym customer service through their official website or the contact information provided by your retailer.