1. Introduction
The TWAYRDIO RH 660S is a dual-band telescopic handheld radio antenna designed for enhanced communication range. Featuring a BNC connector, this antenna operates on 144/430MHz (2M/70CM) frequencies. Its 6-section retractable design allows for a compact 11-inch (28cm) length when unstretched and extends up to 42 inches (109cm) for optimal performance. It offers a gain of 3.0/5.5dBi and handles a maximum power of 10W with a VSWR of 1.5. This manual provides essential information for the proper setup, operation, and maintenance of your RH 660S antenna.
Image 1.1: The TWAYRDIO RH 660S Dual Band Telescopic Radio Antenna.
2. Product Features
- Dual Band Operation: Supports VHF (144MHz / 2M) and UHF (430MHz / 70CM) frequencies.
- Telescopic Design: Features 6 retractable sections, allowing for adjustable length from 11 inches (28cm) to 42 inches (109cm).
- High Gain: Provides 3.0/5.5dBi gain for improved signal reception and transmission.
- BNC Connector: Equipped with a standard BNC connector for wide compatibility with handheld radios.
- Power Handling: Capable of handling up to 10W of power.
- Low VSWR: Ensures efficient power transfer with a Voltage Standing Wave Ratio (VSWR) of less than 1.5.
3. Package Contents
The package includes the following item:
- 1 x TWAYRDIO RH 660S BNC Telescopic Antenna
4. Setup Instructions
Follow these steps to properly attach the antenna to your compatible two-way radio:
- Ensure your radio is powered off before attaching or detaching the antenna.
- Locate the BNC antenna connector on your radio.
- Align the BNC connector on the RH 660S antenna with the connector on your radio.
- Push the antenna connector onto the radio's connector and twist clockwise until it locks securely into place. Do not overtighten.
- Verify that the antenna is firmly attached and does not wobble excessively.
Image 4.1: The BNC connector on the TWAYRDIO RH 660S antenna.
Image 4.2: TWAYRDIO RH 660S antenna connected to a handheld radio.
5. Operating Instructions
The RH 660S antenna features a telescopic design for optimal performance based on your operating environment and frequency.
5.1 Extending and Retracting the Antenna
- To extend: Gently pull each section of the antenna upwards until it is fully extended. The antenna can reach up to 42 inches (109cm) when fully extended.
- To retract: Gently push each section downwards until the antenna is fully collapsed to its 11-inch (28cm) length.
For best performance, especially on VHF (2M) and UHF (70CM) bands, extend the antenna fully. In situations where a shorter antenna is required, partial extension may be used, though this might affect performance.
Image 5.1: Retracted (11 inches) and fully extended (42.9 inches) lengths of the antenna.
Image 5.2: Detail of the 6-section telescopic design.
5.2 Video Demonstration
Video 5.1: A demonstration of the TWAYRDIO RH 660S antenna, showcasing its BNC connector and 6-section telescopic design. The video illustrates how the antenna extends to its full 42-inch length, providing a visual guide for users.
6. Maintenance
Proper care will ensure the longevity and performance of your TWAYRDIO RH 660S antenna.
- Cleaning: Wipe the antenna with a soft, dry cloth to remove dust and dirt. Avoid using harsh chemicals or abrasive cleaners.
- Storage: When not in use, retract the antenna fully to protect the telescopic sections from damage. Store in a dry, cool place.
- Connector Care: Keep the BNC connector clean and free of debris. Periodically check for any signs of corrosion or damage.
- Handling: Avoid bending or applying excessive force to the antenna, especially when extended, to prevent damage to the telescopic sections.
7. Troubleshooting
If you experience issues with your TWAYRDIO RH 660S antenna, consider the following:
- Poor Signal Reception/Transmission:
- Ensure the antenna is fully extended for optimal performance.
- Verify the antenna is securely connected to your radio's BNC port.
- Check for obstructions between your radio and the intended communication point.
- Confirm your radio is set to the correct frequency band (VHF or UHF).
- Antenna Not Extending/Retracting Smoothly:
- Inspect the telescopic sections for any dirt, debris, or physical damage. Clean gently if necessary.
- Avoid forcing the sections; if resistance is met, re-examine for obstructions.
- Loose BNC Connection:
- Ensure the BNC connector is properly aligned and twisted until it locks.
- If the connection remains loose, inspect the BNC connector on both the antenna and the radio for wear or damage.
8. Specifications
| Model | RH 660S |
| Frequency Range | 144 / 430MHz (VHF/UHF, 2M/70CM) |
| Connector Type | BNC |
| Gain | 3.0/5.5dBi |
| Max Power | 10W |
| VSWR | Less than 1.5 |
| Unstretched Length | Approx. 28cm (11 inches) |
| Full Extended Length | Approx. 109cm (42 inches) |
| Impedance | 50 Ohms |
| Item Weight | 2.39 ounces |
9. Compatibility
The TWAYRDIO RH 660S antenna with BNC connector is compatible with a wide range of two-way handheld radios, including but not limited to:
- Kenwood: TK100, TK200, TK220, TK300, TK310, TK320, TK308, TH28A, TH42AT
- Icom: IC-V8, IC-V80, IC-V82, IC-U82, IC-W32, IC-V85, IC-R10, IC-R20
- Motorola: HT440, HT90, Maxon HR, CP500, CP520, 1015
- Vertex Standard: 734, 834, HR146, HX300, HX320, HX400, CU32, CP/CS 5015, 0420
- Uniden: HH979, BC72XLT, BC75XLT, BC92XLT, BC95XLT, BC125AT, BC246T, BC296D, SC230
- Wilson: HH152, HH154, HH156, HH462, HH464
- Alinco: DJ-X10T, DJ-X2000T
- Also compatible with many YAESU, TYT, HYT, and PUXING portable two-way radios suitable for BNC connectors.
10. Warranty and Support
For warranty information or technical support regarding your TWAYRDIO RH 660S antenna, please contact the manufacturer, QUANZHOU TRUEST COMMUNICATION CO., LIMITED (Trust communication), or your authorized dealer. Please retain your proof of purchase for any warranty claims.