HAM Radio Acronyms

"Q" Codes

CODE Question ANSWER
QRA What is the name (or call sign) of your station? The name (or call sign) of my station is ...
QRB How far are you from my station? The distance between our stations is ... nautical miles (or km).
QRG Will you tell me my exact frequency (or that of ...)? Your exact frequency (or that of ... ) is ... kHz (or MHz).
QRH Does my frequency vary? Your frequency varies.
QRI How is the tone of my transmission? The tone of your transmission is (1: good, 2: variable 3: bad)
QRK What is the readability of my signals (or those of ...)? The readability of your signals (or those of ...) is ... (1: bad .. 5: excellent).
QRL Are you busy? I am busy. (or I am busy with ... ) Please do not interfere.
QRM Do you have interference? I have interference.
QRN Are you troubled by static noise? I am troubled by static noise.
QRO Shall I increase transmit power? Please increase transmit power.
QRP Shall I decrease transmit power? Please decrease transmit power.
QRQ Shall I send faster? Please send faster (... words per minute).
QRS Shall I send more slowly? Please send more slowly (... words per minute).
QRT Shall I cease or suspend operation? I am suspending operation.
QRU Have you anything for me? I have nothing for you.
QRV Are you ready? I am ready.
QRX Shall I standby? / When will you call me again? Please standby. / I will call you again at ... (hours) on ... kHz (or MHz).
QRZ Who is calling me? You are being called by ... (on ... kHz (or MHz)).
QSA What is the strength of my signals (or those of ... )? The strength of your signals (or those of ...) is ... (1: very weak .. 5: very strong).
QSB Are my signals fading? Your signals are fading.
QSD Is my keying defective? Your keying is defective.
QSK Can you hear me between your signals (while transmitting), and if so can I break in on your transmission? I can hear you between my signals (while transmitting); break in on my transmission.
QSL Can you acknowledge receipt? I am acknowledging receipt.
QSM Shall I repeat the last telegram (message) which I sent you, or some previous telegram (message)? Repeat the last telegram (message) which you sent me (or telegram(s) (message(s)) numbers(s) ...).
QSN Did you hear me (or ...) on ... kHz (or MHz)? I did hear you (or ...) on ... kHz (or MHz).
QSO Can you communicate with ... direct or by relay? I can communicate with ... direct (or by relay through ...).
QSP Will you relay a message to ...? I will relay a message to ... .
QSS What working frequency will you use? I will use ... kHz (or MHz).
QSU Shall I send or reply on this frequency (or on ... kHz (or MHz))? Please send or reply on this frequency (or on ... kHz (or MHz)).
QSV Shall I send a series of "V" on this frequency (or on ... kHz (or MHz))? Please send a series of "V" on this frequency (or on ... kHz (or MHz)).
QSX Will you listen to ... on ... kHz (or MHz)? I am listening to ... on ... kHz (or MHz).
QSY Shall I change transmission frequency (to ... kHz (or MHz))? Please change transmission frequency (to ... kHz (or MHz)).
QSZ Shall I send each word or group more than once? Send each word or group twice (or ... times).
QTC How many telegrams (messages) have you to send? I have ... telegrams (messages) for you (or for ...).
QTH What is your position in latitude and longitude (or according to any other indication)? My position is ... latitude, ... longitude.
QTR What is the correct time? The correct time is ... hours.

HAM Radio Acronyms

Acronym Meaning
RF Radio Frequency
Hz Hertz - unit defined by cycles per second
kHz Kilohertz
MHz Megahertz
SW Shortwave
HF High Frequency
VHF Very High Frequency
UHF Ultra High Frequency
SWL Shortwave Listener
Op Operator
HAM That would be YOULOL
VFO Variable Frequency Oscillator - Adjust frequency to tune your radio
MR Memory Record - Local memory on your radio for you to program and recalkl for working repeaters and simplex frequencies
TXP Transmit Power - Output setting for your radio
VOX Voice Operated Switch - Voice Activated keying so you can be hands free
SQL Squelch - Controls and turns off output until incoming transmission overrides the setting parameters
TDR Dual Watch - Allows your radio to listen to two channels.
CTCS / CTCSS Continuous Tone Coded Squelch - Used on repeaters and your radio to control receive and transmit squelch
DCS Digital Coded Squelch - Allows radio to tune out signals that are not using a tone
PTT Push to talk - the button you depress to speak on the radio
BCL Bust Channel Lockout - When enabled, prevents radio from tranmitting when another signal is present
F/MW Function.Memory Write - Multi-function button for menus and writing to mem channels on Yaesu radios
BCN-TX Beacon Transmit - If using APRS, this transmits your APRS beacon
AGC Automatic Gain Control - keeps audio levels constant
ATT Attenuator - Knocks down large signals to prevent receiver overload
CAT Computer Assisted Transceiver - Provides computer control of your station to make it easier to use digital operation
NB Noise Blanker
NF Notch Filter
MUF Maximum Useable Frequency - Highest frequency between two points where communication is possible
LUF Lowest Useable Frequency - The lowest frequency between two points where communication is possible
SFI Solar Flux Index - Amount of solar spots on Earth facing the sun
A Index the daily average level for geomagnetic activity
K Index a 3 hour interval of geomagnetic fluctuations
D Layer The lowest of the ionospheric layers. 25-55 miles up called the "daylight layer"
E Layer The next ionospheric layer which is about 55-90 miles up also referred to as a Daylight layer
F1 Layer Second to the highest ionisperic layer is about 90-150 miles above the Earth
F2 Layer The highest layer that is over 250miles above the earth
CW Continuous Wave - This mode is used to transmit morse code
AM Amplitude Modulation - Voice Mode
SSB Single Side band
USB Upper Side band
LSB Lower Side band
FM Frequency Modulation
D-Star Digital Smart Technologies for Amateur Radio (ICOM Radios)
DMR Digital Mobile Radio
APRS Automatic Packet Reporting System - Offers real time digital communications of information in local area
Coax Coaxial Cable used to connect antennas to radios, etc
SO239 connector for UHF Radios SO indicating Socket
PL259 connector for UHF Radios PL indicating Plug
BNC Bayonet Neill-Concelman - twist lock antenna connector reliable up to 2GHz
SMA Subminiature Version A - A threaded connector on HT radios and antennas good for 0Hz - 40GHz
Type N Another connector type gott for frequencies up to 10GHz
SWR Standing Wave Ratio - a measurement of the difference of impedance of your antenna connector and antenna feedline connection
Balun Balanced/Unbalanced - allows interfacing antennas to coax to reduce feedline interference to your radiation pattern for the antenna
Unun Unbalanaced/Unbalanced - allows interfacing antennas to coax to reduce feedline interference to your radiation pattern for the antenna
RST Readability, Signal Strength, Tone
RTTY Radio Teletype
ARRL Amateur Radio Relay League
ARES Amateur Radio Emergency Service
RACES Radio Amateur Civil Emergency Service
SOTA Summits on the Air - Make four contacts from an approved summit
POTA Parks on the air - Make 10 contacts from an approved park