1. Compatible with some BaoFeng, some TYT, and some Yaesu Handheld Radios 2. Connector Type: SMA-F (Female). 3. Band: Dual Band VHF/UHF. 4. Frequency: 144MHz/430MHz. 5. Gain: 3.0dBi (144MHz)/5.5dBi (430MHz). 6. Max Power: 20 Watts. 7. V.S.W.R: Less than 1.5. 8. Impedance: 50 ohm. 9. Antenna Length: 21.1cm (retracted)/93cm (full length).Specification: General Model RH770 Material Metal Frequency Range 144/430MHz Antenna Impedance 50 ohms Connector SAM Gain 3.0dB, 5.5dB Max Power 20W V.S.W.R =< 1.5 Size Antenna Length: 21.5-93cm Weight 85g Package Weight One Package Weight 0.09kgs / 0.19lb One Package Size 24cm * 6cm * 1.5cm / 9.45inch * 2.36inch * 0.59inch Qty per Carton 200 Carton Weight 16.80kgs / 37.04lb Carton Size 32cm * 32cm * 50cm / 12.6inch * 12.6inch * 19.69inch Loading Container 20GP: 520 cartons * 200 pcs = 104000 pcs40HQ: 1209 cartons * 200 pcs = 241800 pcs