Amateur radio Abbreviations and Acronyms

1. S/N
   Signal-To-Noise Ratio
2. 01A
   Triode tube in circuitry of receivers
3. 1/4WA
   Quarter Wave Antenna
4. 1/4WV
   Quarter Wave Antenna
5. 10-4
   Message received
6. 200K
   200Kilohertz
7. 2MTR
   Two Meter Plus Amateur Radio Club
8. 2MTR
   2-Meter wavelength (146 megahertz)
9. 2MtrPlus
   Two-Meter Band Radio Club
10. 47CFR
    Code of Federal Regulations Title 47 (FCC)
11. 5x5
    Five-by-Five (Good Copy Signal)
12. 73
    Best Regards (not an acronym)
13. 88
    Love & Kisses (not an acronym)
14. 9K6
    9600 baud rate for digital communications. Used mainly for amateur radio.
15. ADPCM
    Adaptive Differential Pulse Code Modulation
16. AM-10
    AMSAT Oscar-10 AMateur SATellite
17. APRS
    Automatic Position Reporting System (original term - now Packet instead of Position)
18. ARLOY
    Amateur Radio Lady of the Year
19. ARRL
    American Radio Relay League's
20. BUNCS
    Back-up Net Control Station

Last updated: May 6, 2025 — Total entries: 840