General description The RH770 Dual Band Telescopic Antenna is designed for enhanced communication on 144MHz and 430MHz frequencies. It features a high gain, making it an ideal accessory for various walkie-talkie models, ensuring better signal reception and transmission. Technical specifications Frequency: 144 / 430MHz Gain (MAX): 3.0dB (144MHz), 5.5dB (430MHz) Maximum Power: 20W Impedance: 50 OHM VSWR: Less than 1.5 Length: 21.5cm (92.1cm total length) Connector: SMA Weight: 425g Compatibility and accessories Compatible Models: HYT TC-268, TC-268S, TC-270, TC-270S XINJIE X6Plus, Linton -2288, -5288, -2188, -2268, -A188S, -E320, -777, -666, -3288, -888, -888K, -328, -333, -999, -555 KG-659, KG-679, KG-669, KG-689, KG-699, KG-801, KG-703, KG-UVD1P, KG-816, KG-833 V-2180, WEIERWEI -3288S, V-1000, -3288 UV-5R, UV-5RA, UV-5RA + Plus, UV-5RB, UV-5RC, UV-5RE, UV-B5, UV-B6, -888S, -666S, UV-82, -F8+, -A52 -K4AT, -2AT, -45AT, -42AT, -22AT, -25AT, -UV2 TH-UVF1, T2, T3, F6, 300, 500, 600, 800,