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  • NAPCO StarLink Antenna Extension Kits (SLE Series) — Installation Instructions

    August 31, 2026 3 min read

    Installation instructions for the NAPCO StarLink Antenna Extension Kits (SLE-ANT / SLE-ANTEXT30 / 50 / 75) — technical specifications, ordering options, and installation notes for boosting cellular signal on StarLink SLE Fire Series communicators.

    Full text manual (for reference)

    Installation instructions for the NAPCO StarLink Antenna Extension Kits (SLE Series) — designed for use with StarLink SLE Fire Series UL Listed communicators, to increase cellular transmission signal strength via an exterior antenna option.

    Overview

    The kits include a dual wide-band, 4–9dBi omnidirectional indoor/outdoor antenna that enhances transmission and reception within the 824–894MHz and 1850–1990MHz bands, designed to minimize loss and maximize gain. The antenna is foam-filled for vibration stabilization and features a UV-stable polyurethane finish for corrosion resistance in harsh environments. Each antenna includes an L bracket with stainless steel U-bolts for pole or wall mounting, plus high-quality low-loss coaxial cable and an adaptor for connection to the SMA female antenna connector of all StarLink radio models.

    Features

    • Compact design
    • UV stable polyurethane finish
    • Vibration stabilized, foam filled
    • Excellent 700 MHz LTE performance
    • VSWR <1.5:1 in 3G & 4G bands
    • Universal applications

    Technical Specifications

    Radiation Pattern Omni-Directional
    Gain 4–9dBi
    Bandwidth VSWR <1.5:1 = 695–3000 MHz in all 3G & 4G bands; VSWR <2.0:1 = 695–3000 MHz
    Impedance 50 ohms
    Max. Input Power 50 watts
    Exterior Finish Black, UV stable
    Dimensions 8⅞" (225mm) Length × 2⅜" (60mm) OD
    Weight 10 oz.
    RF Connector Type N female
    PIM -155dBc
    Installation Included L bracket with U-bolts for up to 2" pole
    Elements Copper
    Polarization Vertical
    Wind Rating > 110 MPH
    Warranty 36 months
    Environments Indoor or outdoor use

    Ordering Information

    • SLE-ANT — Antenna only, black UV stable finish
    • SLE-ANTEXT30 — 30' Antenna Extension Kit; includes SLE-ANT antenna, 30' Coax Type N male to MINI-UHF male terminated cable, and SMA M to MINI-UHF F adaptor
    • SLE-ANTEXT50 — 50' Antenna Extension Kit; same components as above with 50' cable
    • SLE-ANTEXT75 — 75' Antenna Extension Kit; same components as above with 75' cable

    Installation Notes

    • IMPORTANT: Do not alter or add coaxial cable.
    • Do not place the antenna within 4 feet of other large metal objects.
    • For LTE Communicators: connect the extended antenna to the left (SMA female) connector — the right LTE antenna supplied with the communicator can be left in place.
    • Secure the antenna to the L-bracket with the supplied nut, threads, and white plastic washer as shown in the assembly diagram in the full PDF.

    NAPCO Limited Warranty

    NAPCO Security Systems, Inc. warrants its products to be free from manufacturing defects in materials and workmanship for 36 months following the date of manufacture. NAPCO will, at its option, repair or replace any product failing to operate correctly, without charge to the original purchaser or user. This warranty does not apply to equipment repaired by others, improperly installed/used, abused, altered, damaged, subjected to acts of God, or with altered/removed serial numbers. Seller is not responsible for dismantling or reinstallation charges.

    Any warranty claim must be brought within six months following the end of the warranty period. NAPCO is not liable for consequential or incidental damages. In case of defect, contact the security professional who installed and maintains your system — the product must be returned by that professional, shipping prepaid and insured, to NAPCO.

    NAPCO recommends the entire system be completely tested weekly. Despite frequent testing, it is possible for the system to fail to perform as expected due to criminal tampering, electrical or communications disruption, or other factors. NAPCO does not guarantee the system will prevent personal injury or property loss, and its liability is limited to the original selling price of the product.