HLLY ELECTRONICS (Hongkong) CO., LTD
6.
Frequency Decrease Control
：
pull the button
“
DOWN
”
，
every pull can decrease 100KHz
，
pull the button for more than 1 second
，
the stepping jump to 1MHz.
S
Using Essential
：
1.
Please select high quality power module like switching power supply
。
2.
The voltage of power module must not higher than 15V .
3.
Please do not alter the frequency when the transmitter is working because it may disturb
the wireless communication.
4.
The distance between the transmitter and antenna should be more than 5 meter because
antenna may disturb the transmitter
。
5.
Recommend using GP antenna or J type antenna, Make sure the SWR(standing-wave
ratio)of the antenna lower than 2,otherwise the transmitter may be damaged because of
the superheating of power tube, attention the frequency of the antenna should match the
frequency the transmitter, Do not use simple antenna, otherwise the transmitter may also
be damaged because of the superheating of power tube!
0
Simple Failure & Resolve Method
：
Failure Phenomenon
Reason
Resolve Method
Short Transmit Distance 1
Antenna link failure
Check the link of antenna
Short Transmit Distance 2
Frequency is too low or too high
Reset the frequency
Short Transmit Distance 3
The power failure or low current
Check power module
Frequency display failure
Been strongly Disturbed
Power off the transmitter and
power on after 5 second
Audio Distortion
Bad audio input or too high audio
input
Check the audio input or turn
down the audio input
O
Transmitter covering Distance
（
Reference: kilometer
）
Receive
sensitivity
0.2uV/12dB
Transmit
power
0.1
～
0.5W
Transmit
power
1
～
2W
Transmit
power
3
～
0.5W
Transmit
power
10
～
30W
Transmit
power
30
～
50W
City
0.1
～
0.5
0.5
～
1
1
～
2
3
～
5
5
～
8
Town
0.2
～
0.6
1
～
2
2
～
3
5
～
8
8
～
10
Environs
0.3
～
1
2
～
3
3
～
5
8
～
15
10
～
30
Widen Plain
0.5
～
2
3
～
5
8
～
20
10
～
30
20
～
40
Sea communication
1
～
3
5
～
15
10
～
30
20
～
40
20
～
50
★
Only for reference, also the covering distance is concern with the antenna and environment
。
