T-80RF user’s guide
– 10 –
FMA Direct
Before starting and flying any aircraft, you should perform a
thorough preflight check of the propeller, engine/motor, air-
frame, control surfaces, linkages and many other parts. Details
are beyond the scope of this manual, but the steps below cover
typical radio system check-out.
1. Check receiver battery voltage with an extended range
voltmeter. (A standard voltmeter isn’t effective for checking
receiver batteries. An extended range voltmeter applies a
load, which simulates typical use conditions for more
accurate measurement of battery voltage.)
2. Assure servos, switch harness and receiver battery are
securely connected.
3. Assure receiver antenna is deployed.
4. Assure transmitter antenna is secure. Tighten if necessary.
5. Extend transmitter antenna to its full length.
6. Check transmitter battery condition: turn on the transmitter
and observe the battery indicator above the power switch. If
it is green, the transmitter is ready to use.
7. Check tri-rate switches to assure they are set to match your
skill level.
8. Turn on receiver.
9. Check for proper control directions: move all four
transmitter sticks—one at a time—and observe the
corresponding control surfaces and throttle. Change servo
reversing and/or mixing settings as needed.
10. Assure control linkages move freely. Correct any linkage
binding. (Binding linkages can rapidly deplete the receiver
battery.)
11. Perform a range check to assure the airplane can be safely
controlled by the transmitter at a distance. (If you don’t
know how to perform a range check, ask your instructor or
get help from an experienced modeler. FMA flight pack
manuals contain range check distances.)
After starting the engine
and before taking off
, check the con-
trols again. Engine vibration may reveal loose connections or
other radio system problems. If the radio system doesn’t per-
form perfectly, stop the engine and correct any problems.
Conducting a radio system preflight check
CAUTION:
If you are at or near a flying field, ob-
serve frequency control rules and comply with local
procedures before turning on your transmitter. When
the transmitter is on—
even for a few seconds
, it is
radiating radio frequencies which may interfere with
a radio system already operating on the same fre-
quency.
Many “shootdowns” occur during pre-flight
checks. You must coordinate with other flyers so
that two transmitters are
never
transmitting on the
same channel at the same time.
About FMA
FMA, Inc. has been designing innovative radio control elec-
tronics for more than 30 years. FMA designs are known for
their high quality and reliable performance. Since 1994, FMA
Direct has assembled an impressive line of more than 300 radio
control products available through dealers and directly from the
company, backed up by solid customer support. Please visit the
FMA Web site (www.fmadirect.com) for the latest information
about our products.
Products available from FMA Direct include:
Dual conversion receivers: 4, 5, 6 and 8 channels; sub-
micro, micro and standard sizes; 72MHz, 75MHz and 6
meters.
Servos: micro, mini, standard and high torque.
Flight packs: including receiver, servos and battery pack or
speed control.
Electronic
speed
controls: for RC cars, airplanes and boats.
Electric motors and propulsion systems.
Field chargers and battery management systems.
Electric airplanes: including the Razor flying wing.
Battery
packs:
for
receivers,
transmitters and electric flight.
And many other radio control components and accessories.
Summary of Contents for T-80RF
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