Product Review

The Wolfwhoop TX3 is a super small, light weight and power switchable VTX support Parameter-adjusting(0.01mW) mode and FC Uart.
If you are looking for the cheapest VTX that works perfectly, this is the one to get IMO. Follow up Wolfwhoop, we'll release best vtx at most affordable price.
Save money, fly better.

Feartures:
Supports 40 channels
Tiny and low weights: under 2.4g
Built-in U.FL connector rather than SMA
LC filter allows ultra clean fpv video
0.01/25/50/100/200mW Switchable
Integrated with FC Uart, connectable to betaflight FC with OSD (Support FC like Wolfwhoop OmnibusF4/OmnibusF4 Pro)
Support parameter remotely adjusted by Betaflight, flight controller, OSD 5V BEC output, support power for receiver and camera
0.01mW to prevent adjacent channel interference, Integrated Uart, connectable to betaflight FC

Specification and Parameters:
Input voltage: 3.2-5.5V
Features：FC Uart, Parameter-adjusting mode
Power supply: 5V out for camera@ under 300mA max
Output power:
25mW: 300mA @3.7V
50mW: 450mA @3.7V
100mW: 600mA @3.7V
200mW: 650mA @3.7V
Connector: U.FL/IPEX
Dimensions: 19X15(WXD)mm
Weight: 2.4g(excluding antenna)

Package include: 1 X TX3 micro transmitter
1 X U.FL line antenna
1 X JST Cable
1 X user manual

Note :

5645/5925/5945(E4/E7/E8) are not available sue to FCC regulation. Selecting 5645/5925/5945(E4/E7/E8) will be invalid action.

37 channels 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