RT/UHF LEG MOUNT TRANSMITTER, UHF 433 or 434 MHzPlease note these transmitters are custom order, so they will take from one to two weeks time to make up for you.The RT/UHF offers your bird the best protection available -- long range coupled with reliability and excellent efficiency in a compact size using the 1/3N battery. This transmitter is used primarily for large shortwings or longwings raptors. Two frequencies can be ordered in the RT UHF in 433, 434MHz and they all come with the magnetic on/off switch and a magnetic wand. Range is from 9 – 100 miles depending on the terrain. Battery life is about 3 days continuous before a double beep every 10 pulses tells you it is time to change the battery. It will run an additional 3 days after the double beep warning. Other great features include Power line static protection, rugged hard coating anodizing, high impact crystals, full length ¼ wave antenna for maximum range and easy crank design. This is the most powerful falconry transmitter made to date .Note for US use of the RT UHF a Ham operators license is required. Note:All Marshall transmitters come with one battery and a magnetic wand. Comes with a three year warranty.