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The top radio control helicopter equipment can match the impedance of an antenna to the radio impedance (50 ohms standard). The input capacitor voltage is high. The same can be obtained from an old TV or a radio valve at the time. Coils should be constructed as follows: - The first one (two intermediate taps) is ax painted with 1.5mm wire section with a density of 8 turns per inch. The derivation for 10 meters is taken from the third turn. The derivation for 15 meters is taken from the sixth lap while for the 20 meter band coil must be connected to complete. - The other coil (the one referral) should be done with wire 1mm thick and should be winding 16 turns per inch. The only derivation, taken at the ninth loop is for the 40 meter band. For the 80 meter coil is used to complete. The old radio variable capacitors can be used in this case if they are of three bodies. - To proceed with input adjustment you will be using a single body. For the output setting to use all three! Switch The radio control helicopter key switch must be in band effort ceramic and good quality. Use an insulated shaft is a good idea. Another possibility is to use RF relays controlled by a sequencer or a microphone. This is the idea of the owner. Once armed, any place within a grounded metal box. To avoid unwanted harmonics is recommended 90 degree coils oppose each other. In the left circuit must be connected to the radio and the right, the antenna amp of 150w for the band of 3 meters. The radio control helicopter transformer T1 has a relationship 3000:500 ohms the type used in audio output transistor. T2 is a transformer flash lamp trigger a 6kV side. Precaution Applying this radio control helicopter equipment on the human body can cause serious injury from even death. Do not use on humans, you have more anger. In this case the switches J1 and J2 have no function. The 4.7K ohms are responsible for both the current limit on the bases of the transistors as well as the load on port B pins of the microcontroller. In both of 150 ohms are responsible for limiting the current in the displays. Take your time and venture onto the procedure wisely. You can easily learn how to get things right.
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