THE WORLD OF FREE PACKET RADIO SOFTWARE IN AMSTERDAM
HERE CAN YOU FIND THE SCHEMATIC OF A 60 CM CONVERTOR
DE BUIDING INSTRUCTIONS FOR THE 60 CM CONVERTOR:
L1 has a length of 5 cm and is made of 2.5mm2 blank electric copper wire. L2 has a length of 7 cm and is made of 2.5mm2 blank electric copper wire.
L4 and L5 are 6 turns with a diameter of 4 mm and they have a center tap and are from 0.5 CUL.
L3, L6 and L7 are 10 turns with a diameter of 3 mm and are from 0.1 CUL.
The converter for deze 60 cm is easy to build into a cabinet of double-sided circuit board.
Each transistor including corresponding components in separate chambers.
L2 with two trimmers to adjust the receive frequency.
So if for example, to receive frequency is 485 MHz and the receiver most at 110 MHz and the oscillator at 375 MHz.
Then adjust L1 to maximum reception and minimal noise.
This converter is designed for the 60 cm band but is also suitable to an ordinary radio, the radio band or to receive the car phones
that are lower in the 60 cm band. But you also can receive the sound channels of the TV channels that are slightly higher in the 60 cm band be able to receive.
I depends on the country where you are what you can receive on the 60 cm band.
