The Comet CHL-2510 is a high-performance dual-band mobile antenna for 144 MHz (2m) and 430 MHz (70cm). Rated at 250W on both bands with gain figures of 3.0 dBi on 2m and 5.5 dBi on 70cm, and terminated with a PL-259 connector for direct connection to standard amateur radio transceivers. The wide-band receive capability (100–170 MHz and 350–470 MHz) extends reception beyond the amateur bands, making it useful for monitoring public services, airband, and other VHF/UHF traffic alongside normal amateur radio operation. Key Features Dual band: 144 MHz (2m) and 430 MHz (70cm) Gain: 3.0 dBi (2m, 1/2λ non-radial) | 5.5 dBi (70cm, 5/8λ 2-stage non-radial) Max power: 250W (both bands) Wide-band receive: 100–170 MHz and 350–470 MHz Connector: PL-259 (UHF male) Length: 1.0m Technical Specifications Frequency: 144 MHz / 430 MHz Gain: 3.0 dBi (144 MHz) / 5.5 dBi (430 MHz) Max power: 250W Wide receive: 100–170 MHz, 350–470 MHz Connector: PL-259 (UHF male) Length: 1.0m