RECEIVER OPERATION MANUAL
THE NOVAK XXTRA RECEIVER
Novak introduces the world’s first small size, light weight,
low power synthesized receiver for R/C cars and boats.
Forget those extra receiver crystals, now selecting the
frequency channel is as easy as rotating two switches.
Based on the rock-solid XXL circuitry, the XXtra adds a
crystal-controlled phase locked loop oscillator, and five
output channels for the ability to control extra servos.
With outstanding range, superior noise rejection, low
voltage operation
(down to 3.0 volts DC)
, and solid state
reverse voltage protection, the XXtra outperforms the
competition. The XXtra works with all popular radio
systems and DSC
(Direct Servo Control)
connections, and
accepts Futaba, JR, Sanwa, Hitec, & new KO connectors.
SPECIFICATIONS
Case Size .......... 1.65”x1.12”x0.52”
(41.9x28.4x13.3mm)
Weight ................................ 0.58 ounce (16.33 grams)
Number of Channels .............................................. Five
Usable Sensitivity ................................... 3.0 microvolts
Bandpass ................................. 50 dB down @
±
7.5 kHz
Adjacent Channel Rejection .......... >60 dB @
±
10.0 kHz
3OIP
(Third Order Intercept Point) ...............................
>+4 dBm
Voltage Range ............................... 3.0 to 10.0 volts DC
Antenna Length .......................... 18 inches (45.72 cm)
Current Consumption ....... 18.0 mA
(over full voltage range)
The XXtra has been factory tuned and requires no further
tuning. This section describes how to select frequency channel.
1.
Frequency band is marked in purple circle on case label
.
2.
To set the frequency channel to match your transmitter,
simply adjust the ten position rotary switches using a
#1 phillips or small
(1/8”)
flat blade screwdriver,
rotate
switches until they point to the proper channel numbers
.
•
The
75 MHz receiver
has 2 number sets on the 1st DIGIT
switch.
Top numbers are for Hitec & Futaba transmitters
.
Bottom numbers are for JR, Sanwa/Airtronics, KO, & Multiplex
(MPX)
transmitters
. The 2nd DIGIT switch has 10 positions.
To adjust a 75 MHz receiver to channel 76
(75.710 MHz)
for use with a Futaba transmitter, rotate the 1st DIGIT
rotary switch to the ‘7’ position on the top, then rotate
the 2nd DIGIT switch to the ‘6’ position.
•
The
USA 27 MHz receiver has only 1 rotary switch
. With
only 6 channels allowed on 27 MHz, there is no need
for the 1st DIGIT switch. To adjust this receiver rotate
the “2nd DIGIT” switch to desired frequency channel.
•
All other receiver bands have two rotary switches
, and
adjust by rotating the “1st DIGIT” switch to the first
number of the desired frequency channel, then rotating
the “2nd DIGIT” switch to the channel’s second number.
•
EURO 40 MHz receiver channels are equal to the 3rd &
4th digits of the frequency
. Adjust a 40 MHz receiver to
channel 67
(40.675 MHz)
by rotating the 1st DIGIT switch
to the ‘6’ position and the 2nd DIGIT switch to the ‘7’.
3.
Transmitter crystals MUST be made by the transmitter maker
and be on the same modulation and frequency band
.
EXAMPLE:
Futaba FM/75 MHz transmitter crystal must
be used with Futaba FM/75 MHz transmitter.
Transmitter crystals are usually marked “TX”.
STEP 1
RADIO FREQUENCY CHANNEL SELECTION
The XXtra receiver will accept Futaba, JR, Hitec, new-style
Sanwa/Airtronics (the blue color Z connector), and new-
style KO input plugs. These two sections (Step 2 is broken
up into two different sections depending on which brand of
servo or speed control you have) describe how to connect
and/or change the plug plastics and wiring based on the
brand of radio system components you have.
• JR •
• Insert the plug plastic of the servo or ESC’s input harness
into the receiver with the
BROWN wire toward the
outside/bottom edge of the case
(marked NEG on label).
• Hitec • Futaba • New KO • Air Z •
• Insert the plug plastic of the servo or ESC’s input harness
into the receiver with the
BLACK wire toward the
outside/bottom edge of the case
(marked NEG on label).
STEP 2
INPUT PLUGS(Futaba, JR, Hitec, new KO/Sanwa/Air)
With some older ESC’s and servos, the sequence of the wires
in the plastic connector housing needs to be changed.
This is important, because the electronics inside the receiver
may be damaged if the wiring sequence is incorrect.
Changing the sequence is easy to do as described below.
• Old-Style KO •
•
Interchange the red and black wires
in the KO plug
plastic of the input harness as shown in the figure below.
• Insert the input plug into the receiver with the
BLACK
wire toward the outside/bottom edge of the case
.
• Old-Style Sanwa/Airtronics •
• Interchange the middle black and red wires in the plug
plastic of the input harness as in the figure below.
• Trim the plug plastic* as needed to fit into the XXtra.
*Contact Novak to get JR style plug plastics if you do not want to trim.
• Insert the input plug into the receiver with the middle
BLACK wire toward the outside edge of the receiver.
With a small flat blade screwdriver, gently lift the plastic prong
until the wire and metal socket easily slides out of the plastic
housing. Repeat for each wire.
STEP 2
INPUT PLUGS (Sanwa/Airtronics & old KO)
The XXtra should be mounted so the receiver ‘floats’ to
avoid damage from vibration or shock, and position it
where the case will not contact other rigid surfaces.
DO NOT USE TIE WRAPS TO MOUNT RECEIVER!
1.
Electric Cars & Boats––
Mount XXtra with the included
double-sided tape as close to antenna mast as possible.
2.
Gas Cars & Boats––
Cut the included double-sided tape
in half and double-layer it for extra dampening.
Do Not use glue to mount the receiver!
3.
Tubular Plastic Antennas––
Run the antenna wire up
through the plastic antenna tube and let the excess
wire trail out the top of the tube.
4.
Rigid Antennas––
Wrap antenna wire around the mast
with 1/4” spacing. Shrink wrap or tape the top to secure
the wire and let the excess trail off the top of the mast.
Do not cut or coil excess wire––Range will be reduced!
STEP 3
MOUNTING INSTRUCTIONS
• 29 MHz •
RECEIVER CHANNEL FREQUENCIES
CHANNEL #
FREQUENCY (MHz)
10
29.725
11
29.735
12
29.745
13
29.755
14
29.765
15
29.775
16
29.785
17
29.795
18
29.805
19
29.815
20
29.825
21
29.835
22
29.845
23
29.855
24
29.865
25
29.875
26
29.885
27
29.895
28
29.905
29
29.915
30
29.925
31
29.935
32
29.945
33
29.955
34
29.965
35
29.975
36
29.985
*TRANSMITTER CRYSTAL MUST BE SAME MAKER
AND FREQUENCY BAND AS TRANSMITTER
• EURO 40 MHz •
RECEIVER CHANNEL FREQUENCIES
CHANNEL #
FREQUENCY (MHz)
66
40.665
67
40.675
68
40.685
69
40.695
70
40.705
71
40.715
72
40.725
73
40.735
74
40.745
75
40.755
76
40.765
77
40.775
78
40.785
79
40.795
80
40.805
81
40.815
82
40.825
83
40.835
84
40.845
85
40.855
86
40.865
87
40.875
88
40.885
89
40.895
90
40.905
91
40.915
92
40.925
93
40.935
94
40.945
95
40.955
96
40.965
97
40.975
98
40.985
99
40.995
*TRANSMITTER CRYSTAL MUST BE SAME MAKER
AND FREQUENCY BAND AS TRANSMITTER
• USA 75 MHz •
RECEIVER CHANNEL FREQUENCIES
CHANNEL #
FREQUENCY (MHz)
61
75.410
62
75.430
63
75.450
64
75.470
65
75.490
66
75.510
67
75.530
68
75.550
69
75.570
70
75.590
71
75.610
72
75.630
73
75.650
74
75.670
75
75.690
76
75.710
77
75.730
78
75.750
79
75.770
80
75.790
81
75.810
82
75.830
83
75.850
84
75.870
85
75.890
86
75.910
87
75.930
88
75.950
89
75.970
90
75.990
*TRANSMITTER CRYSTAL MUST BE SAME MAKER
AND FREQUENCY BAND AS TRANSMITTER
