- Can be cascaded or added to one another in order to sharpen the attenuation of the rejection curve
- Temperature compensated to ensure frequency stability
- High attenuation to minimize desense and interference from adjacent systems
- Adjustable loops: each cavity has a calibration index
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Designed to reject one narrow band of frequencies, while letting all others pass in the operating band -
- 3.0 dBd gain achieved by featuring a 5/8-wave whip with a base loaded matching coil
- 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
- Large diameter coil form which allows for a wider operational bandwidth and better matching characteristics
- Rubber boot and overlap construction to ensure a moisture-proof installation
- Standard Motorola NMO type mount
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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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Very large bandwidth which make it ideal for emergency use or resale
- Available in UHF configuration (3 frequency splits)
- Rugged design to withstand the most extreme environmental conditions
- The mounting hardware supplied will permit 0.75” to 2.3/8” O.D. pipe installation.
- DC ground for lightning protection
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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
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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 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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DOWNLOAD PDF DOWNLOAD DIGITAL PATTERNSIdeal for applications where costs are calculated per antenna
- Available in many configurations
- VHF, UHF or 700/800/900 MHz antennas can be combined onto one mast
- Mix and match with our 770, 790, 840, 870 and 880 series antennas
- Can be configured for side or top mount
- Low VSWR version with maximum gain over specified frequency
- Certain versions of antennas have an adjustable pattern for 3 dBd omnidirectional or 6 dBd offset coverage
- Heavy-duty versions available
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The F-3647 is a heavy duty wideband dual antenna with an 871F-70 on the base and a 771-70 on the top. The antenna offers for the 871F-70 & 771-70 a choice of radiation patterns that are determined by the dipole-to-mast spacing. The F-3647 has an internal cabling and is not field adjustable. The 871F-70 & 771-70 antenna is offered in a ¼, 3/8, or ½ wave pattern spacing versions. The antenna can be black anodized. Heavy Duty version of the antenna is also available. DOWNLOAD PDF DOWNLOAD DIGITAL PATTERNS
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The F-3647 is a wideband dual antenna with an 871F-70 on the base and a 771-70 on the top. The antenna offers for the 871F-70 & 771-70 a choice of radiation patterns that are determined by the dipole-to-mast spacing. The F-3647 has an internal cabling and is not field adjustable. The 871F-70 & 771-70 antenna is offered in a ¼, 3/8, or ½ wave pattern spacing versions. The antenna can be black anodized. Heavy Duty version of the antenna is also available. DOWNLOAD PDF DOWNLOAD DIGITAL PATTERNS
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Adjustable or fixed, side mount or top mount antenna
- Available in 1, 2, 4, 8 and dual dipole configurations
- Offered in a 1/4, 3/8, or 1/2 wave versions
- Internal cabling and fixed dipole-mast spacing
- Heavy-duty and black anodized versions available
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Adjustable or fixed, side mount or top mount antenna
- Available in 1, 2, 4, 8 and dual dipole configurations
- Offered in a 1/4, 3/8, or 1/2 wave versions
- Internal cabling and fixed dipole-mast spacing
- Heavy-duty and black anodized versions available
