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Radio Data Technology, Manufactures and Suppliers of Radio Modems, Wireless Video, Radio Telemetry and RF Module Equipment

FAQ's for Wireless Video Transmission (Analogue)

Q: My radio system is not working! What is wrong ?.
A: Check the following, and if you continue to have a problem, please contact technical support.
LED status VTX, the unit will NOT transmit until it receives a video signal, check camera ,cable and power.
LED not illuminated = unit not powered
RED = VTX is powered but not transmitting (no video signal detected)
GREEN = VTX is transmitting OK.
VRX
No LED illuminated = unit not powered
One RED LED showing = unit is powered but no signal being received.
Two RED LED showing = very poor signal, out of range or antenna requires upgrading.
Two RED one ORANGE = poor signal, out of range or antenna requires upgrading.
One GREEN LED=average signal, Two GREEN=good, Three GREEN=very good.

Q: What antenna should I use ?.
A: RDT offers an assortment of directional and omni-directional antenna. Whilst there are many factors to consider in making a antenna choice there are two inescapable truths:

1. Height is everything
2. The radio will only perform as well as the antenna and cable connected to it.

Q: How far can I transmit 'Line of sight' ?
A: Line of sight is just that - it means there are no obstructions between the antenna.

VTX1394 and VRX1394 VTX2.4 and VRX2.4

Antenna ¼ Wave short range 700m

Antenna ½ Wave medium range 1K

Antenna Dipole 1.5K

Antenna Directional Yagi 5K

Q: How far can I transmit without line on sight ?
A: It depends. It is very difficult to predict results in non line of sight conditions as signals penetrating solid objects such as metal and hills will be dramatically reduced.

Q: What is included with the standard VTX and VRX ?
A: Every standard VTX and VRX comes complete with the latest 12v switch mode power supply and ¼ wave short range antenna.

Q: Can RDT supply me with a full weatherproof system ?
A: YES we can supply a complete range of weatherproof enclosures. Please contact sales support.

Q: Can I operate my telemetry over the video transmission ?
A: NO - You will need to use a RDT radio modem which can transmit RS232/485 serial data. Ensure that your telemetry system is radio compatible by contacting our sales support.