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1 (159) Strona 20 z 46 Spy Circuits8. CLASS "C" OUTPUT The following Circuit uses no biasi
1 (160) Strona 21 z 46 Spy Circuits with frequencies around 100MHz. It seems the designer had diffic
1 (161) Strona 22 z 46 Spy Circuits There is no evidence of the above Circuit de!ivering morę output
1 (162) Strona 23 z 46 Spy Circuits When you fix these faults you will see how much improvement you
1 (163) Strona 24 z 46 Spy Circuits This covers all the possible combinations for the greatest outpu
1 (164) Spy Circuits Strona 25 z 46 10p 166R 22p 75R 47 p 35R 1n 1R6 22n much less
1 (166) Strona 27 z 46 Spy Circuits corwert a high-voltage at low-current into a low-voltage at high
1 (167) Strona 28 z 46 Spy Circuits But it is often quite inconvenient to use a long antenna, so her
1 (168) Strona 29 z 46 Spy Circuits A Circuit diagram does not show the screening necessary to keep
1 (169) Strona 30 z 46 Spy Circuits You can learn a lot about designing a Circuit by looking at faul
1 (170) Strona 31 z 46 Spy Circuits This means a certain amount of the energy delivered by the 4p7 w
1 (172) Strona 33 z 46 Spy Circuits AER I AL 1.    You don t need 10u and 100u electr
1 (173) Strona 34 z 46 Spy CircuitsTELEPHONE BUG Look at the coil. A floppy coil like this is totall
1 (174) Spy Circuits Strona 35 z 46 A close-up of the Field Strength Meter Mkl connected to a multim
1 (175) Spy Circuits Strona 36 z 46 Field Strength Meter Mkl Circuit. A 2N2222A transistor can be us
1 (176) Strona 37 z 46 Spy Circuits junction of the DC amplifier transistor only allowing ,6v to app
1 (177) Spy Circuits Strona 38 z 46 1 - BC 547 transistor 1    - PN 3563 RF transisto
1 (178) Strona 39 z 46 Spy Circuits We needrYt say any morę about construction as you will obvious!y
1 (179) Strona 40 z 46 Spy CircuitsEXPERIMENTING Take the Voyager project and connect 30cm of tinned
1 (180) Strona 41 z 46 Spy Circuits This project has 3 features. 1.    It s a Field S

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