Manual

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system is often several hundred MHz wide, even if they have a SAW, so 1300 and 1800 can jam it.
a 2.4GHz video transmitter have first harmonic at 4.8GHz so it is no big problem with the harmonics,
it is a known fact that most 2.4Ghz video transmitters are most likely better with most GPS units.
Video stripes is often seen when a power supply is not clean or ground / signal wires are shared with
power or other units on the plane, note if the stripes are constant or change with motors or servos or other
items moving or operation, try to touch camera or video transmitter, see if any change in the stripes.
Grounding items with analogue signals specially video signals are super sensitive to grounding problems
you cannot supply a pulsing current on a ground wire to a video connected device, if this ground wire is the
same for video signal, it is quite difficult to explain how to split signal ground with power ground. A “Star”
kind of grounding has a zero current / zero voltage in the centre point.
Power supply cleanness. Try to mount external battery on different items they are super clean, and is
smart to try locate a problem.
Switch mode, it is often seen SBEC or other switch mode regulators are designed to be cheap and have no
really good filter, extra 100uH coils and 470-1000uF on the input and output might help, input is just as
important as the output.
Shielding some devices radiate magnetic pulses, specially SBEC and cameras, if they are contained in a
closed metal case the problem will be less, but weight will go up, iron cases are better for low frequency
magnetic problems.
Camera some types radiate radio noise, uncased types are the worst! but cased types can also do it, case is
maybe painted and therefore not fully shielded, the wires from it works like radiating antennas, ferrite
torrid and aluminum-foil is a good solution, and distance to GPS and other receivers is a good idea tool.
Servos some RC servos types are only designed to be used near receivers, clear enough, but when located
near a transmitter they can be jammed, moved or stopped or other weird things even periodic problems
have been seen. Tricks/solutions: aluminium-foil around the servo, wire turned on ferrite torrid.
Electrical motors are also inside servos they will also radiate magnetic pulses when they move.
Some systems like video transmitters and cameras and osd systems do not like to be near this field.