Helium miner bidirectional Amplifier 915mhz. 1 x Helium amp TX 6db, RX17db. 1x 12v Power supply. 1x Cavity filter 915mhz. 1x Coax Jumper RPSMA to Male SMA. 1x adapter to plug RPSMA to SMA filter. Everything included just follow pictures in the AD, coax is labeled for correct setup. A lot of customers see 30-50% witness’s and beacons go much further, increasing the numbers will improve your chances of being picked as one of the 14. If you use this with stock antenna will not help to much as poor antenna and height is a very poor setup. The best advice is to get a outdoor antenna and get high up as you can. If you have a good antenna setup and just need a improvement this will increase 30-50%. TX power is set at 6db to gain the power lost through your coax. LMR400 is almost 3db and that loss is 50% of power to the antenna. Main focus of the amplifier is for receiving to improve your witnessing capability. RX is set at 17db. TX 6db this will not be over FCC rules is 36db (1 watt) radiated power with a 8db antenna. Miner power is 26db -3db (LMR400) coax loss with the addition 6db from amp is 29db (approx)sent to antenna, with no amp would be 23db. Remember that 3db is half of your power from miner. Example of radiated power. TX Power dBm AntGain (dBi) EIRP(dBm). This is the best amp out there as using the same RF chip as Helium miner using which is much more capable given better operating conditions. With the better conditions provided and cavity filter makes for a great setup that you will see improvements quickly. I have a few amps available with SAW filters installed instead of using cavity filter. Message me and we can discuss that option. Using a cavity filter is far superior then a SAW filter.