Instructions for use
22
Tactic TR624  Receiver
Channels 6
Frequencies
2.403 – 2.480 GHz
Modulation
FHSS spread spectrum
Input power
Four “AA” alkaline, NiCd or NiMH cells
(4.0 – 6.0V, not included)
Failsafe
Programmable throttle, all other channels
maintain last recognized positions
Dimensions 1.77 × 0.98 × 0.5" (45 × 25 × 13mm)
Weight
0.28 oz (8g)
OTHER ITEMS INCLUDED
●  On/off switch harness with built-in charge lead
●  4 cell “AA” battery holder for receiver
●  Neck strap
IMPORTANT WARNINGS
AND PRECAUTIONS
● NEVER allow water or moisture to make 
contact with the electronic components inside the 
transmitter, receiver, servos, switch harness, etc.! 
This could lead to failure or improper functionality 
of components and poor control of aircraft which could 
pose a safety hazard.
● NEVER operate R/C model aircraft near power lines, radio 
or cell phone towers, roads or automobiles, buildings, or 
pedestrians. Be very careful in locations where many R/C 
aircraft are being used simultaneously.
● NEVER operate R/C equipment if you are physically 
impaired as it could pose a safety hazard to yourself or 
others in the area.
● NEVER allow small children to operate/control model R/C 
equipment without the supervision of an adult.
● NEVER allow the transmitter’s throttle stick to accidentally 
be moved away from the “off” or minimum position while 
the model’s engine/motor is moving.
● ALWAYS range check the radio system before use.
● ALWAYS make sure that all transmitter stick movements 
operate all servos properly in the model. Check the proper 
operation of control surfaces before and after starting the 
engine/motor.
● ALWAYS make sure the transmitter antenna is unfolded 
entirely so that it’s pointing upright to ensure max. range 
and control of the aircraft.
● Do not store your radio equipment in extremely hot or 
cold locations, in direct sunlight, or in locations with high 
humidity. Store R/C equipment in cool and dry locations.
● Do not allow chemicals to come in contact with any parts of 
the radio system. Substances such as glow fuel, gasoline, 
CA glue, etc. could permanently damage plastic parts of 
the radio system.
● If NiCd batteries were installed in the transmitter, remove 
the batteries before placing the radio in long-term storage.
TROUBLESHOOTING
RANGE IS SHORT
Interference – check Rx installation and servo connections. 
Low Tx or Rx battery – replace the batteries or recharge if 
applicable. Rx may need to be located to a different position 
in the model for better reception. Crash damage – send the 
radio to Hobby Services for repair. 
RUN TIME IS SHORT
Low Tx or Rx batteries – replace or recharge the batteries. 
Obstructed servo linkages causing excess battery drain – 
free the linkages / pushrods.
Tx POWER SWITCH ON BUT SERVOS DO NOT FUNCTION
Tx or Rx batteries are low – replace or recharge the batteries. 
Rx switch is in the off position – turn on the ESC or switch 
harness. Switch harness or ESC is connected incorrectly – 
check all connections and the ESC instruction manual. Rx 
is not binded to the Tx properly – perform binding process 
again. Check Tx or Rx battery polarity.
INTERFERENCE OR SERVOS GLITCHING
Out of range – operate the model more closely to the transmitter. 
Outside radio interference from pagers, strong industrial or 
other commercial transmitters in the area - check your local 
R/C club regarding local operation. Rx located too closely to 
engine, motor, or servos or other moving mechanical parts 
which might be creating unwanted electrical noise – relocate 
the Rx inside the model or relocate the ESC.
CONTROL SURFACE MOVES IN THE WRONG DIRECTION
Reverse the position of the reversing switch for the 
appropriate channel.
ONLY ONE SERVO GLITCHES
Servo is bad – replace the servo or send to Hobby Services 
for repair.










