37channels are all above 5650 and below 5925MHz, which are legal to use in the USA with an amateur radio license.

This equipment is being sold under FCC’s amateur radio rules. Operators must require amateur radio license to operator legally in the US. Use of amateur equipment without a license or use of equipment on restricted frequencies could subject the operator to significant fines by the FCC. By purchasing this equipment, the user is agreeing that they understand these responsibilities and will operate the equipment legally. 

Features

Support Smart audio 

25mW/200mW/600mW/1000mW power switchable

One button frequency and power setup

OSD configuration using smart audio

7-26V input with 5V output for camera

With MIC

Specification

Input Voltage : 7V-26V

Extra Features : Smart audio/1000mW for long range

Power Supply : 5V Camera @ under 500mA max.

Output Power :  25mW/200mW/600mW/1000mW

Antenna Connector : MMCX 

Cable Connector : JST 6P

Dimension : 22 x 32mm

Weight : 6.8g(excluding antenna)

Package Included 

1 x 5.8Ghz 25mW/200mW/600mW/1000mW Switchable FPV Transmitter

1 x Antenna(MMCX to SMA / RP-SMA Adapter) and cable set

1 x Product manual