The antenna switch is specially made for HAM. The effect is excellent, the insertion loss is low, and the price is only about 30% of imported goods. The performance is not inferior to imported goods at all. It can be used in various radio equipment such as UV section car station, hand station, shortwave station, SDR receiver, FM radio receiver system and so on. The of use is very simple, just flip the switch to access one of two options.. Used to connect 2 antenna systems to a radio station. Note: The two antennas are essentially not connected to the radio at the same time, but only one antenna can be to be connected at a time through the switch. For example, you can equip the radio with an omnidirectional fiberglass antenna and then a directional antenna.Switch according to the communication needs. It is also possible to connect two antennas to aim at different directions, and to switch antennas in different directions through the antenna switch, the signal strength of the radio will be different, so that the signal direction can be easily distinguished. In short, there are many ways to play with antennas, and you can study them slowly. If equipped with multiple switches, more antenna switching options can be achieved. Equip one antenna for 2 radio stations. Note: This is not recommended It is only recommended for 2 receivers without transmitting function to connect using this . Since the launch function is risky, it should be used with caution and bear the corresponding consequences. Therefore, this connection is not recommended.Because only one radio is connected to the antenna at any time, and the other one is not connected to the antenna. Therefore, you must confirm the -on and launch. In addition, this can also be used for home decoration wiring.Because the swit direction and port access of different batches of products are not necessarily the same, use a multimeter to measure and confirm the corresponding relationship between the switch handle direction and the two ports connected before use, and make a mark. For ease of use. Usually the switch is turned to the right, the interface on the left is connected, and the interface on the right is disconnected. Colour:As shownMaterial:metalPackage Contents:1 x Antenna SwitchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.