What
Channel should I use
You will need a matched pair of crystals for your
transmitter & receiver. The choice of channels are from 55 to 90. Channels
87-90 are reserved for helicopters, whilst fixed wing models use any of the
others. Fixed wing flyers are not to use either channel 87-90. Check with
other members down at the field so that you can choose a lesser used channel
(too many people using one channel is not a good idea).
Please note that nobody should use
channel 86 for safety reasons (ask at the field for details)
Ten new frequencies have been allocated
on the 35mhz band for use by aero modellers. Five have been added to each end
of the channel numbers. Although these new frequencies are available now there
may be a delay in the relevant crystals becoming available until the manufacturers
and suppliers catch up with the demand.
|
Freq
MHz
|
Channel
No.
|
|
34.950
|
55
|
|
34.960
|
56
|
|
34.970
|
57
|
|
34.980
|
58
|
|
34.990
|
59
|
|
35.000
|
60
|
|
35.010
|
61
|
|
35.020
|
62
|
|
35.030
|
63
|
|
35.040
|
64
|
|
35.050
|
65
|
|
35.060
|
66
|
|
35.070
|
67
|
|
35.080
|
68
|
|
35.090
|
69
|
|
35.100
|
70
|
|
35.110
|
71
|
|
35.120
|
72
|
|
35.130
|
73
|
|
35.140
|
74
|
|
35.150
|
75
|
|
35.160
|
76
|
|
35.170
|
77
|
|
35.180
|
78
|
|
35.190
|
79
|
|
35.200
|
80
|
|
35.210
|
81
|
|
35.220
|
82
|
|
35.230
|
83
|
|
35.240
|
84 Do not use
|
|
35.250
|
85Heli
|
|
35.260
|
86Heli
|
|
35.270
|
87
Heli
|
|
35.280
|
88
Heli
|
|
35.290
|
89
Heli
|
|
35.300
|
90 Heli
|
- The News From The BMFA
- The Joint Radio Control Users Committee is pleased to announce that
following protracted negotiations with The Radio Communications Agency the 35
MHz band has been extended to 34.945 MHz to 35.305 MHz providing ten extra
channels for model flying making thirty six in all. The current
numbering system will now range from 55 to 90.
-
- Other Info
- The old frequencies on the 27Mhz band are now rarely used due to
interference from Citizen Band radio sets. The 40Mhz band is for the use of
surface vehicles i.e. buggies, boats etc. There is also a 459Mhz band but this
is used for telemetry transmissions also, although there is only a slight
chance of interference. The main objection to using the 459Mhz band is the
high price of the equipment and limited availability. The 35Mhz band that the
Phoenix Model Flying Club use is for model aircraft only. The 35Mhz band has a
10Khz frequency spacing. All freq bands (27, 35, 40 & 459Mhz) must have a
transmitter output of no more than 100mW
A transmitter in use will normally have an orange pennant inscribed with
the channel number attached to the aerial, this not only shows the channel no.
used to other flyers but is also a good indicator of wind direction and wind
speed for the pilot.
|
