- Available in single, dual or triple units
- Temperature compensated to ensure frequency stability
- High attenuation
- Adjustable loops: each cavity has a calibration index to reference insertion loss
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Designed to minimize interference from adjacent channels and outside systems -
Designed to minimize interference from adjacent channels and outside systems
- Available in single, dual or triple units
- Temperature compensated to ensure frequency stability
- High attenuation
- Adjustable loops: each cavity has a calibration index to reference insertion loss
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- Gain of unity over its operating bandwidth
- Manufactured using the best corrosion-resistant materials and finishes available
- Triple-plated chrome brass with a large insert molded low-loss coil form and spring-loaded, gold-plated contact
- Rubber boot to ensure a moisture-proof installation
- Standard TAD / NMO type mount
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- 2.0 dBd of gain over its operating bandwidth
- Manufactured using the best corrosion-resistant materials and finishes available
- Triple-plated chrome brass with a large insert molded low-loss coil form and spring-loaded, gold-plated contact
- Rubber boot and overlap construction to ensure a moisture-proof installation
- Standard TAD / NMO type mount
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F-3990 This VHF antenna is designed for applications that require peak performance in the 136-174 MHz while tolerating a VSWR around 2.0:1. This antenna has a loading coil between the radiating element and the base. This coil increases the electrical length and makes the antenna perform electrically as a 1/4 wave antenna, but shorter than a regular 1/4 wave antenna. Typical gain, when mounted on a ground plane, is comparable to a full 1/4 wave. Mounts on NMO. The upper element is made from a brass wound cable with a flexible shaft core, well sealed using rubber shrink material. This solution offers a high reliability and prevents breakage or brittleness. Other frequencies are available upon request. DOWNLOAD PDF
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Broadband 1/2-wave antenna - no ground plane needed
- Manufactured using the best corrosion-resistant materials and finishes available
- Triple-plated chrome brass with a large insert, molded low-loss coil form and spring-loaded gold-plated contact
- Rubber boot ensures a moisture-proof installation/avoid scratching or rusting of the vehicle
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Designed for external Public Safety Radio Frequencies to propagate within buildings, tunnels or public use environmentsDOWNLOAD PDF DOWNLOAD DIGITAL PATTERNS
- Offered with Fire Retardant 6200 Kydex or ABS radomes
- Meet the recommended fire safety practices of both the Federal Transit Administration (FTA) and the Federal Rail Administration (FRA) for smoke emission and flammability as tested under ASTM E-662 and ASTM E-162
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Designed for external Public Safety Radio Frequencies to propagate within buildings, tunnels or public use environmentsDOWNLOAD PDF INSTALLATION PDF DOWNLOAD DIGITAL PATTERNS
- Offered with Fire Retardant 6200 Kydex or ABS radomes
- Meet the recommended fire safety practices of both the Federal Transit Administration (FTA) and the Federal Rail Administration (FRA) for smoke emission and flammability as tested under ASTM E-662 and ASTM E-162
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Designed for external Public Safety Radio Frequencies to propagate within buildings, tunnels or public use environments
- Aluminium painted
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Designed to pass a frequency band and reject a narrow band of frequencies
- Can reject frequencies on either the high or low side of the pass frequency
- Temperature compensated to ensure frequency stability
- High attenuation to minimize desense and interference
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Unity gain in a broadband design for extra heavy-duty service
- Manufactured using the best corrosion-resistant materials and finishes available
- Integrated shock spring and a heavy-duty stainless steel whip that is designed to withstand severe shock
- Ultrasonically-welded brass insert and a gold-plated spring-loaded contact
- Provides 24 MHz of bandwidth using VHF frequencies and 100 MHz of bandwidth at UHF frequencies
- Standard Motorola C, M type mount
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Designed for external Public Safety Radio Frequencies to propagate within buildings, tunnels or public use environments
- Multiple frequency bands
- Aluminum painted
