Order Numbers
F4090 - F4091 - F4092
F4095 - F4096 - F4097
The spot frequency of the transmitter and receiver must always be
the same.You must use a pair of crystals designed for the frequency
band of your system.Remove the transmitter back panel:the crystal
is on the left-hand side of the main circuit board.
It is not possible to use, say,a 40 MHz crystal in a 35 MHz unit;
the system simply will not work.
Equipment designed for the 35 MHz B-band can also be operated
with crystals for the 35 MHz A-band, and vice versa, but a
conversion is required.This work can be carried out by the robbe
Service Department,and is offered at a fixed price.
Be sure to use only genuine crystals from the robbe-Futaba
range, and use only those frequencies which are approved for
model use in your country, as listed in the frequency table
supplied.
4.6 Changing the transmitter battery
The FX-18 radio control system is available with two different types
of transmitter battery:
1. NC sets (No. F 4090 to F 4092) with 8-cell nickel-cadmium (NC)
battery,capacity 750 mAh;
2.NiMH sets (No.F 4095 to F 4097) with 8-cell nickel-metal-hydride
(NiMH) battery,capacity 1400 mAh.
Changing the transmitter battery
- Remove the transmitter back panel (see Section 4.2)
- Disconnect the battery connector from its socket
- Release the transmitter battery from the battery cradle - it is
secured with double-sided adhesive tape
- Peel off any adhesive residue if necessary
- Attach the new battery with the double-sided tape supplied
- Connect the battery lead.
The following replacement battery types are available:
No.4462 8 RSZ 750 mAh NC Operating time approx.3 hours
No.4461 8 RSZ 1500 mAh NC Operating time approx.6 hours
No.4463 8 NiMH 1400 mAh Operating time approx.6 hours
No.4460 8 NiMH 2200 mAh Operating time approx.9 hours
4.7 Installing and connecting option modules
An outstanding feature of the FX-18 transmitter is the wealth of
expansion options it offers.
You can install linear sliders, mixer switches and external mix
trimmers to suit your own requirements.The first step is to decide
on an option well where you can reach the control most easily,
without having to let go of the sticks.
A total of 4 option wells is available for linear sliders,plus 12 option
wells for mixer switches,channel switches and mix trimmers.
The following expansion modules can be installed and connected:
- 2 linear sliders (front panel),2 linear sliders (back panel)
- up to 10 mixer switches or channel switches
- up to 2 pairs of external mix trimmers (No.F 1506)
- 1 Multi-Switch module (up to 32 switched channels,
see Section 11)
- 2 stick-top switches
Please work carefully when connecting expansion modules to
avoid damaging the transmitter electronics.
- Switch off the transmitter before installing an option module
- Remove the back panel (Section 4.2)
- Disconnect the battery lead.
- To install switches in these wells,push through the thin inner
skin at the prepared hole position using a pointed object.
- Open up the hole to the final diameter of 6 mm using a 6 mm Ø
drill or scissor blade,holding the tool in your hand.
- Place the switch in the hole from the rear and position it in the
holder,then fit the nut on the front and tighten it carefully using
an 8 mm A/F spanner.
- Bend the cable from the switch virtually at right-angles,to
ensure that there is still adequate space for any slider which you
may wish to install in the back panel.
Take care to arrange the cables neatly!
8
Transmitter crystals
bear the
abbreviation
TX + channel
number.
Receiver crystals
bear the
abbreviation
RX + channel
number.
Dual-conversion
receiver crystals
bear the
abbreviation
RX-DS + channel
number.
Installing mixer and channel switches in the outer option wells
Installing the mixers and channel switches
in the inner option wells
