Doc. No: Unex-HDG-20-001
8/11
A printed version of this document is an uncontrolled copy
© 2020 Unex Technology Corporation – Company Confidential
Figure 4: Antenna cable extraction tool
7.1.2. Operating Frequency
VTX-301 can transmit/receive in U-NII-4 band (5850-5925 MHz). There are 7 available
channels (172, 174, 176, 178, 180, 182, and 184) with 10 MHz bandwidth. If using U-NII-4
band is not allowed by local authorities, U-NII-3 (5725-5850 MHz) can be used as an
alternative option.
7.2. Pinout
Please note that the pinout listed here is seen from the VTX-301 side. For designing a
system board interface, the input and output direction must be reversed.
Typical internal PU/PD resistor is 30K-
70K Ω.
Table 1: VTX-301 Pinout
Pin
Symbol
Type
Pull
Drive
Strength
(mA)
Description
Power
Domain
1
VDD_5V
P
-
-
5V Power Supply
-
2
VDD_5V
P
-
-
5V Power Supply
-
3
VDD_5V
P
-
-
5V Power Supply
-
4
VDD_5V
P
-
-
5V Power Supply
-
5
VDD_5V
P
-
-
5V Power Supply
-
6
GND
G
-
-
Ground
-
7
GND
G
-
-
Ground
-
8
GND
G
-
-
Ground
-
9
GND
G
-
-
Ground
-
10
GND
G
-
-
Ground
-
11
CLOCKOUT0_125Mhz
O
PU
8
125MHz clock used to transport the Tx / Rx
indication signals over coaxial cable for the
cable compensator
VDD_3.3V
12
N.C.
-
-
-
Non Connection
-
