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Hitec Spectra 75 Synthesized RF Module Instructions
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Congratulations, you now own the world’s most versatile RF module on the
planet! The Spectra 75 gives you the freedom to access all 30 channels on
the 75MHz band by simply dialing channel 61 through 90 on the Spectra 75
transmitter module and installing the matching crystal in your receiver.
Instructions
To install the Spectra 75 into your Lynx 3D, make sure the power switch is in the
“Off” position. Remove the single frequency RF module by pressing the top and
bottom tabs then gently pull the module out of the socket. On the side of the
st
Spectra 75, you will find two rotary dials marked 1
digit and 2nd digit. With the
supplied plastic screwdriver, carefully turn the slots in each dial corresponding to
the channel number you wish to transmit on. (Caution: do not push down dials
as this may cause damage to the unit.) Next, change the receiver crystal to
match the channel you have selected. (Note: you must us a genuine Hitec
crystal in any manufacturer’s receiver to work with the Lynx 3D and Spectra 75.)
Next, plug the Spectra 75 in place of the old module. Place it all the way in until
you hear it “Click” to ensure all contacts are in place.
To make sure everything is working properly it is advised that you perform a
range test. With the transmitter antenna down you should get a minimum of 35ft.
before the servos start to jitter. (Caution: when performing a range test make
sure your vehicle is secure or remove the pinion gear to prevent it from running
away if the signal is lost.)
Flexibilit
-The Hitec Spectra 75 is a direct replacement of the RF module for the Hitec
Lynx 3D.
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Frequency Safeguards
-Because the Spectra 75 Module is designed to be completely removed from the
transmitter prior to the channel change, there is no chance of broadcasting an
unwanted signal during the channel change procedure.
Specifications
-Frequency range: 75.41 to 75.99 (CH 61~90)
-RF input power: 400mW
-Modulation: 2.8kHz +/- 200Hz
-Current Drain: 150mA +/-30mA
Care and Operation
-Please prevent excessive moisture, fuel and dust from entering the module.
-Avoid excessive force when turning the channel dials.
-Prior to changing frequency, please check to make sure no one else in the
vicinity is operating on the channel you wish to change to. If your track uses a
frequency control system, please obtain the clip before making the actual
channel change.
Caution: Although the dials are clearly marked 1
st
digit and 2nd digit to
correspond to the proper channel number, it is imperative that no confusion
occurs in dialing in the new channel number. Transposition of the channel
numbers such as 67 instead of 76 could result in interfering with another radio
already in operation. Always verify the channel before plugging the module back
into the radio. Additionally, there is a one second delay in the activation of the
RF signal at the instant the transmitter is turned on. As a safety measure you are
cautioned no to drive your vehicle until the control link has been established.
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