Don't forget - no flying this Saturday morning
Prop Chart For Two-Stroke Engines
| Alternate Propellors | Starting Prop | Engine Size |
|---|---|---|
| 5.25x4, 5.5x4, 6x3.5, 6x4, 7x3 | 6x3 | .049 |
| 7x3,7x4.5,7x5 | 7x4 | .09 |
| 8x5,8x6,9x4 | 8x4 | .15 |
| 8x5,8x6,9x5 | 9x4 | .19 - .25 |
| 9x7,9.5x6,10x5 | 9x6 | .20 - .30 |
| 9x7,10x5,11x4 | 10x6 | .35 - .36 |
| 9x8, 11x5 | 10x6 | .40 |
| 10x6,11x5,11x6,12x4 | 10x7 | .45 |
| 10x8,11x7,12x4,12x5 | 11x6 | .50 |
| 11x7.5, 11x7.75, 11x8,12x6 | 11x7 | .60 - .61 |
| 11x8,12x8,13x6,14x4 | 12x6 | .70 |
| 12x8,14x4,14x5 | 13x6 | .78 - .80 |
| 13x8,15x6,16x5 | 14x6 | .90 - .91 |
| 15x8,18x5 | 16x6 | 1.08 |
| 16x10,18x5,18x6 | 16x8 | 1.20 |
| 18x8,20x6 | 18x6 | 1.50 |
| 18x10,20x6,20x8,22x6 | 18x8 | 1.80 |
| 18x10,20x6,20x10,22x6 | 20x8 | 2.00 |
Prop Chart For Four-Stroke Engines
| Alternate Propellers | Starting Prop | Engine Size |
|---|---|---|
| 9x5,10x5 | 9x6 | .20 - .21 |
| 10x6,10x7,11x4,11x5.11x7,11x7.5,12x4,12x5 | 11x6 | .40 |
| 10x6,10x7,10x8,11x7,11x7.5,12x4,12x5,12x6 | 11x6 | .45 - .48 |
| 11x7.5,11x7.75,11x8,12x8,13x5,13x6,14x5,14x6 | 12x6 | .60 - .65 |
| 12x8,13x8,14x4,14x6 | 13x6 | .80 |
| 13x6,14x8,15x6,16x6 | 14x6 | .90 |
| 14x8,15x6,15x8,16x8,17x6,18x5,18x6 | 16x6 | 1.20 |
| 15x6,15x8,16x8,18x6,18x8,20x6 | 18x6 | 1.60 |
| 18x12,20x8,20x10 | 18x10 | 2.40 |
| 18x10,18x12,20x10 | 20x8 | 2.70 |
| 18x12,20x10 | 20x10 | 3.00 |
The 35 MHz Band
(A) Identification is by orange flag with black or white channel numerals.
| CHANNEL | FREQUENCY |
|---|---|
| channel 55 | 34.950 |
| channel 56 | 34.960 |
| channel 57 | 34.970 |
| channel 58 | 34.980 |
| channel 59 | 34.990 |
| channel 60 | 35.000 |
| channel 61 | 35.010 |
| channel 62 | 35.020 |
| channel 63 | 35.030 |
| channel 64 | 35.040 |
| channel 65 | 35.050 |
| channel 66 | 35.060 |
| channel 67 | 35.070 |
| channel 68 | 35.080 |
| channel 69 | 35.090 |
| channel 70 | 35.100 |
| channel 71 | 35.110 |
| channel 72 | 35.120 |
| CHANNEL | FREQUENCY |
|---|---|
| channel 73 | 35.130 |
| channel 74 | 35.140 |
| channel 75 | 35.150 |
| channel 76 | 35.160 |
| channel 77 | 35.170 |
| channel 78 | 35.180 |
| channel 79 | 35.190 |
| channel 80 | 35.200 |
| channel 81 | 35.210 |
| channel 82 | 35.220 |
| channel 83 | 35.230 |
| channel 84 | 35.240 |
| channel 85 | 35.250 |
| channel 86 | 35.260 |
| channel 87 | 35.270 |
| channel 88 | 35.280 |
| channel 89 | 35.290 |
| channel 90 | 35.300 |
(B) To identify the channel number of an untagged crystal:
- (1) If the crystal is marked 34.xxx you subtract 40 from the first two numbers after the decimal point of the frequency marking, (i.e. 34.960, subtract 40 from 96 giving channel 56).
- (2) If the crystal is marked 35.xxx you add 60 to the first two numbers after the decimal point of the frequency marking, (i.e. 35.260, add 60 to 26 giving channel 86).
The UK Radio Control Council is responsible for monitoring UK aeromodelling frequencies.
