Elenco Telephone Bug Manuel d'utilisateur télécharger pdf (Page 8)

QUIZ

1) The Telephone Bug is a small FM radio __________.

2) The main components of the Bug are the modulator, __________ oscillator, __________ amplifier, and

antenna.

3) The RF oscillator frequencies for FM radio are between 88MHz and _____MHz.

4) An __________ circuit consisted of a coil and a capacitor connected together.

5) The Bug gets its power from the __________ line.

6) Current through resistor __________ turns on transistor Q2.

7) Transistor Q2 amplifies the __________ frequencies on the telephone line.

8) The modulation adds the __________ signal to the RF carrier.

9) The further the FM carrier is pulled from its center frequency, the __________ will be the voice signal heard

in the radio speaker.

10) The antenna will __________ the signal into space.

Answers: 1. transmitter; 2. RF, voice; 3. 108; 4. oscillator; 5. phone; 6. R1; 7. voice; 8. voice; 9. louder; 10. radiate

SCHEMATIC DIAGRAM

Elenco

Electronics, Inc.

150 Carpenter Avenue

Wheeling, IL 60090

(847) 541-3800

Website: www.elenco.com

e-mail: elenco@elenco.com

1 2 3 4 5 6 7 8

Pas de commentaire

Elenco Telephone Bug Manuel d'utilisateur Page 8