KAMEHA KA039 User manual

Important safety notice
Please read below safety instructions carefully before installation and operation:
1. Please pay attention to all the warnings and hints on this device.
2. Do not expose this unit to rain, moisture and liquid.
3. Do not put any stuff into the device.
4. Do not repair or open this device without professional people's guidance.
5. Make sure good ventilation openings to avoid product overheating damage.
6. Shut off power and make sure environment is safe before installation.
7. Do not plug-in/out the network cables and IR cables when it is in using
to avoid cables damage.
8. Use DC5V only. Make sure the specification matched if using 3rd party
DC adapters.
1 Introduction
This HDMI over RF extender applies RF conversion technology to convert
HDMI signal to HD digital TV signal and transmits by coaxial cable up to
700meters. It has the advantage of good image quality and strong anti-
interference ability and can connect with CATV splitter to realize one to

many, many to many and video matrix connection.
It can be widely applied in CCTV, outer large screen, shopping mall advertisement,
media education and digital KVM fields etc.
2 Features
1) Full compatible with HDCP.
2) Transmit up to 700meters with RG6(75-5) at 1080P@60Hz.
3) Support up to 100 channels.
4) Support CATV splitter and amplifier connection.
5) High quality image, long distance transmission and strong
anti-interference ability.
6) Supports IR control channel switching.
3 PACKAGE CONTENTS
4. INSTALLATION REQUIREMENTS
1.HDMI source device(computer graphics card, DVD,PS3, HD monitor
equipment etc).
2.SDTV, HDTV or projector with HDMI port.

3.RG6(75-5) or upper level coaxial cables.
4. INSTALLATION REQUIREMENTS
5 Panel description
1. HDMI to RF sender TX
2.RF to HDMI receiver RX
3.Channel parameters settings

There are 100 (0-99) channels controlled by 2 buttons. Button left can
select single digit and button right fortens digit. Combination of tens
digit and single digit makes 99 channels totally. TX and RX can build
connection only when they are set to same channel parameters and
RX HDMI port outputs the corresponding A/V content.
4. IR remote control
This IR remote control is just used to set channel.
For example, set channel to be 99, just aim the IR remote
control to IR receiver and press number 9 and 9 again.
6 Connection
6.1 One-to-one connection

6.2 One-to-many conection：Connect one CATV splitter to realize
splitter function.
6.3 Many to many connection：Connect two CATV splitters to build
video matrix.
Note: for above“CATV splitter 1”, it needs to take“OUT”as the signal
input and“IN”as signal output.
For“CATV splitter 2”, just follow the marks on the panel description.
6.4 Other notes
1. Cable length is suggested to be 300-700meters. If cable is shorter
than 100meters, it needs to connect a 20dBm(at least) signal attenuator
to get image output.
2. Refer to appendix 1 for channel-frequency mapping table; Refer to
appendix 2 for the coaxial cables signal loss for different channel signal.

3. When using CATV splitter for 1 to many and many to many connection,
it is suggested to use low consumption, high isolation and shielding
5-1000Mhz bi-directional communication splitter to build video matrix.
7 FAQ
Q. It shows “NO SIGNAL”on screen?
A：1) Make sure to set TV source signal to the correct channel.
2) If LINK led is not on, check if TX and RX channel setting is the same.
3) If coaxial cable is too long, please refer to Appendix 1 to adjust
channel setting.
Q. Image is not normal after setting channel (splash screen, disturbance,
mosaic etc)?
A：Make sure coaxial cable connection is stable. Try other channel or reset RX.
Q：There is video image output but no sound?
A：Reset TX or re-up TX electricity.

8 SPECIFICATION
Appendix 1:Channel, frequency, cable distance mapping table

Note:
Above cable length value is offered based on RG6 (75-5) cable transmission.
Professional ones can calculate the transmission length for different material
cables by referring to appendix 1 and 2.
For example, from appendix 1, it shows channel 5 receive sensitivity is -80dBm.
From appendix 2, it shows 700 meters RG6 cable signal loss value is -61.91
dBm at 211Mhz. This value is less than -80dBm and it is within the required

range.
To achieve stable signal transmission, it needs to consider the signal loss
caused by cables and connectors quality and leave more dBm.
Appendix 2: coaxial cable signal loss table
website: http://www.net-comber.com/cable-loss.html
Disclaimer
* The product name and brand name may be registered trademark of
related manufacturers.TM and ? may be omitted on the user manual.
The pictures on the user manual are just for reference, and there may
Disclaimerbe some slight difference with the real products.
We reserve the rights to make changes without further notice to a product
or system described herein to improve reliability, function or design.