How to choose right wireless video system for FPV (first person view) flying.
To make it Plug and Play Rangevideo brings together AVS, which stands for Aerial Video System. It consists of transmitter, receiver, antennas ,camera, microphone, connections/cables, and some other accessories which vary between different AVS systems.
To better understand the AVS model number:
AVS-900-500-KX171
AVS- Aerial Video System (product type)
900- 900MHz (frequency range)
500- 500mW (output power in mW)
KX171- KX171 (camera model)
When choosing the AVS you might want to consider the following:
range of transmission before signal loss
transmitting frequency
RF emitting power allowed in your country
RF diapason allowed in your country for amateurs
compatibility with your radio, GPS or any other device on board
weight
camera characteristcs
need for audio
power requirements (voltage and current)
price
RANGE, not counting obvious transmitter power, depends very much on receiving antenna, interference from other gadgets, and geophysical conditions, because of that, is not quite an exact science. But I have some approximations gathered from field experience of other pilots.
AVS-2400-10
AVS-2400-500
AVS-2400-1000
AVS-900-500
TRANSMITTING FREQUENCY: 900MHz beats 1300MHz, beats 2400MHz, in range with same output power.
COMPATIBILITY: Some radios like Spectrum DX7, operate on 2.4GHz band - so 900MHz and 1300MHz are obvious choice for those who have 2.4GHz radio systems.
WEIGHT :
CAMERA: Well you sure look at KX's and assume that the bigger the number and price - the better. And you guess it right!
KX131:
KX171:
KX191:
KPC650:
AUDIO A must have for any pilot - have to hear the assuring whirl of the motor all the time or you can go in panic mode and get brain cancer.
POWER Most gadgets use 12V some - 5V, you can power you AVS from motor battery or separate. Have to know how much current system draws to plan for power supply.
Using your main motor battery to power the AVS can be difficult to do properly, because interference from the motor and ESC will show on the video. It is possible to power the video AVS from the motor battery and it will require a high output filtered power supply. Maybe we will sell such a thing in the future. I recommend to always use a separate battery for the AVS. For the 12V AVS systems, use a small 3s1p 11.1V Li-poly battery with JST connector. The JST connector fits perfect with our AVS. For the 5V AVS-2400-500-5V, use a 2s1p 7.4V Li-Poly battery. Remember, the AVS is designed to be plug and play, so the 5V AVS will have the voltage regulator pre-installed.
Here are some examples of obvious choices:
So, you might want to have super powerful system for extra long range, no interference and super camera with it - we have it. AVS-900-500-KPC650 or AVS 2400-1000-kpc650
Or, light weight system to put on heli to fly indoors - go with AVS-2400-10-KX131
Or the system with long range,compatible with 2.4GHz R/C radios, andwith day/night camera go with AVS-900-500-KX191.
The most popular system is the AVS-900-500. It is long range, flexible, and will not interfere with 2.4GHz R/C radios.
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