QK-AS15
3 of 4
2022
V1.0
2. Connections and Installation
Installing the AS15 is a simple with only a few steps process.
Both the antennas and the AS15 have impedance ratings, either 50 Ohms or 75 Ohms. The AS15
impedance rating must match that of the antenna for optimal results. Most marine VHF/AIS antennas
have the impedance of 50 Ohms, but please check before installation.
2.1. Wiring
1. The AS015 is suggested to be installed inside of the boat, in a dry and clean space, keeping it
away from combustible material. Although it can be connected directly to the VHF radio / AIS
receiver or WiFi router, we would suggest having a 2-foot coaxial cable between the RF device and
the AS15. This would save the RF device in case of the over voltage/current of lightning would
damage the AS15.
2. Connect one end of the AS15 to the 2-foot cable or to the RF device. Either end will work since the
AS15 is bi-directional.
3. Connect the other end of the AS015 to the coaxial cable that connects to the antenna.
2.2. Grounding
Grounding the AS15 is extremely important, otherwise it won’t function as intended. If the external
antenna is shocked by high voltage energy, this will help earth ground the energy.
Attach the ground wire to the grounding connector and use a set of pliers to crimp the wire on the
connector firmly. The other end of the wire needs to be attached to a grounding point. When installing
the wire, avoid creating any sharp bends. It is recommended to use a copper wire no smaller than 10
AWG (>2.5mm diameter) and keep this lightning escape wire as short as possible.
3. Specifications
Item
Specification
Frequency range
DC to 2500 MHz
Impedance
50 Ohm
VSWR
< 1.1
Insert loss
< 0.2 dB
Input power
400W
Voltage at discharge start
DC 350V ±20%
Discharge
voltage of shock wave (1x40)μ S
1000 V
With
stand current of shock wave (1x40)μ S
6000 A
Insulating resistance (DC 100V)
> 5,
000MΩ
Connector
SO239/SO239
Housing
Brass, tri-metal plated
Centre contact:
Brass / bronze, gold plated
Temperature Range:
-25°C to 80°C
For more information
