ANSWERS TO QUESTIONS Q1. THROUGH Q39.

3-46 ANSWERS TO QUESTIONS Q1. THROUGH Q39. A1. To convert energy electrical/acoustic to acoustic/electrical and to key/unkey a transmitter. Also it mutes a receiver when transmitting. A2. Transferring remote control functions and signals to transmitters. A3. Transfers receiver audio outputs to remote control stations. A4. 800 watts. A5. Automatic, semiautomatic, and manual. A6. It matches the impedance of an antenna to that of a transmission line at any desired frequency. A7. To aid in heat transfer and prevent corona and arcing. A8. Lsb, usb, isb, AM, cw, fsk. A9. Digital. A10. To connect an antenna/transmission line to a receiver/transmitter. A11. Patching and filtering and permits the multiple use of receivers and/or transmitters on a single antenna. A12. Space and mark. A13. Intelligence (5), start (1), stop (1). A14. Shift signals. A15. Synchronous and nonsynchronous. A16. A unit of modulation rate. A17. Binary digit. A18. Neutral and polar. A19. Converts dc to corresponding mark and space modulation. A20. Converts the audio signal to dc pulses. A21. Uses AM to change dc to audio. A22. A keyer provides rf excitation, which can be shifted above or below the assigned frequency. A23. 60, 75, or 100 wpm. A24. Page-size copy paper and perforated tape. A25. It handles classified information. A26. To code or decode messages.