Operation Manual
9
4.1.4. Fitting the transmitter crystal
First open the transmitter (Fig. I). Transmitter crystals are fitted with a blue plastic
sleeve and bear the code letter „S“ before the channel number. Check also that the
crystal is correct for your transmitter’s frequency band.
You can tell the frequency band of any MULTIPLEX transmitter by the colour of the
aerial wire (flexible wire from the main circuit board to the aerial):
• orange = 35 MHz band
• green = 40 MHz band
• red = 72 MHz band
Fit the transmitter crystal in the appropriate socket on the main circuit board
(see Fig. II).
Please be very careful when handling crystals:
• Don’t let them fall
• Don’t force them into the socket
• Don’t subject them to vibration in use or in storage
4.1.5. The transmitter sticks
The sticks of the COCKPIT
MM
transmitter feature:
• variable spring tension
• selectable self-neutralising action or ratchet (non-neutralising)
• height-adjustable stick tops
Adjusting the stick tension (see Fig. III)
The sticks of your transmitter are fitted as standard with neutralising springs. This
means that the sticks always return to centre when you release them. You can ad-
just the spring tension to suit your personal preference by rotating the M2 x 16
cross-point screws. Turn the corresponding screw clockwise to increase spring ten-
sion, and anti-clockwise to reduce spring tension.
Activating the stick ratchet (Fig. IV)
As standard the transmitter is supplied with all four primary stick functions self-
neutralising. However, for many functions (e.g. throttle or spoilers) the neutralising
action is not required. For this reason any of the sticks can be converted from
„spring-neutralising“ to „ratchet“ operation if required. The parts required for the
conversion are supplied in a separate plastic bag in the transmitter packaging.
This is the procedure for activating the ratchet:
1. Disable the neutralising spring
Locate the M2 x 16 cross-point screw in the accessory bag and screw it fully into
the plinth designed for it.
2. Now screw the ratchet spring to the stick unit frame using the cross-point 2.2 x
6 mm screw.
Caution: don’t over-tighten the screw, otherwise you could strip the threads in
the plastic.