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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.
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.
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.
| 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 |
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.
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