These list contains some abbreviations used in amateur radio and does not lay a claim on completeness.
Welcoming, form of adresses, greetings
BCL
broadcast listener
BCNU
be seeing you
CALL
call, callsign
CQ
calling any station (come quick)
CUAGN
see you again
CUL
see you later
DR
dear
FRD
(girl) friend
GA
good afternoon
GB
good bye
GL
good luck
GLD
glad
GM
good morning
GN
good night
HAM
amateur radio operator
HI
laugh, hello, high
HPE
hope
I
I
INFO
information
LUCK
luck
MRI
mary
OB
old boy
OM
old man
OP
operator
OT
old timer
OW
old woman
SKED
schedule
SRI
sorry
SWL
short wave listener
TKS, TNX
thanks
TU
thank you
U
you
UR
your, you are
URS
yours
XCUS
excuse
XYL
maried young lady
YL
young lady
YR
your
33
love and kisses (between YL and YL)
55
many success, many points
72
best regards (between QRP stations)
73
best regards
88
love and kisses (between OM and YL)
Rapport, conditions, acknowledgements
ADR
address
BCI
broadcast interference
BURO
QSL bureau
CFM
confirming
CONDS
conditions
CONDX
dx conditions
CRD
card
DX
distance, foreign countries
LOG
log (book)
LP
long path
LTR
letter
LUF
lowest usuable frequency
MGR
manager
MSG
message
MUF
maximal usuable frequency
PX
prefix
RPRT
report
RST
report
R = readability 1...5 (unreadable...perfect)
S = signal strenght 1...9 (faint...extremely strong)
T = tone 1...9 (very rough...perfect)
SAE
self-addressed envelope
SASE
self-addressed stamped envelope
SIG
signal
SIGS
signals
SP
short path
TRB
trouble
TVI
television interference
AC
alternating current
AER
aerial
AF
audio frequency
AM
amplitude modulation
ANT
antenna
BFO
beat frequency oscillator
BUG
semi-automatic key
CC
crystal controlled
CW
continous wave, CW
DB
dezibel
DC
direct current
EL
element
ELBUG
electronic bug
ELE
elements
FD
frequency doubler
FM
frequency modulation
FREQ
frequency
GND
ground
GP
groundplane
HF
high frequency
INPT, INPUT
input (power)
KEY, KY
(morse) key
KHZ
kilohertz
KW
kilowatt
LSB
lower sideband
LW
long wire
MA
milliampere
MHZ
megahertz
MIKE
microphone
MTR
meter
OSC
oscillator
PA
power amplifier
PEP
peak envelope power
PP
push-pull
PTT
push to talk
PWR
power
RAC
rectified alternating current
RCVR, RX
receiver
RF
radio frequency
RIG
station equipment
RTTY
radio teletype
SSB
single side band
STN
station
SWR
standing wave ratio
TRX, XCVR
transceiver
TX, XMTR
transmitter
USB
upper sideband
VFO
variable frequency oscillator
VXO
variable crystal oscillator
W
watt
XO
crystal oscillator
XTAL
crystal
QRA
What is the name of your station?
The name of my station is ...
QRB
What is the distance between our stations?
The distance between our stations is ...
QRG
Will you tell me my exact frequency?
Your exact frequency is ... kHz
QRH
Does my frequency vary?
Your frequency vary
QRI
How is the tone of my transmission?
The tone of your transmission is 1...3 (good...bad)
QRK
What is the intelligility of my signals?
The intelligibility of your signals is 1...5 (bad...excellent)
QRL
Are you busy?
I am busy
QRM
Is my transmission being interfered with?
Your transmission is 1...5 interfered with (no...extremely)
QRN
Are you troubled by static?
I am 1...5 troubled by static (no...extremely)
QRO
Shall I increase power?
Increase power
QRP
Shall I decrease power?
Decrease power
QRQ
Shall I send faster?
Send faster
QRS
Shall I send more slowly?
Send more slowly
QRT
Shall I stop sending?
Stop sending
QRU
Have you anything for me?
I have nothing for you
QRV
Are you ready?
I am ready
QRX
When will you call me again?
I will call you again at ... hours
QRZ
Who is calling me?
You are being called
QSA
What is the strength of my signals?
The strenght of your signals ist 1...5 (scarcely perceptible...very good)
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?
I can hear you between my signals
QSL
Can you acknowledge receipt?
I am acknowledge receipt
QSLL
Would we exchange QSL cards?
I will send my QSL card
QSO
Can you communicate with ... direct?
I can communicat with ... direct
QSP
Will you relay to ...?
I will relay to ...?
QST
General call preceding a message addressed to all amateurs
QSW
Will you send on ... kHz?
I will send on ... kHz
QSX
Will you listen on ... kHz?
I will listen on ... kHz
QSY
Shall I change to transmission on ... kHz/another frequency?
I will going to transmission on ... kHz/another frequency
QSZ
Shall I send each word twice?
Send each word twice
QTC
Have you messages for me?
I have messages for you
QTH
What is your location?
My location is ...
QTR
What is the correct time?
The correct time is ... UTC
A
a
ABT
about
AGN
again
AM
ante meridiem
ANI
any
B4
before
BC
broadcast
BD
bad
BK
break
BTR
better
C, YES
yes
CL
closing down (the station)
CLD
called
CLG
calling
CPI, CPY
copy
D, DWN
down
DE, FM, FRM
from
ES
and
EU
Europe
FB
fine business, excellent
FER, FOR,
FR, 4
for
GD, GUD
good
GLD
glad
HR
here
HRD
heard
HV
have
HW
how
K
come
KNW
know
LIS
licence, licenced
LSN
listen
MI
me
MIN
minute
MNI
many
N, NO
no
NIL
nothing
NITE
night
NM
nothing more
NR
near, number
NW
now
OK
OK, right
ONLI
only
PM
post meridiem
PSE
please
PSED
pleased
R
roger, right
RCD, RCVD
received
RPT
repeat
RQ
request
SA
say
SED
said
SEZ
says
SN
soon
SUM
some
TEMP
temperature
TMW
tomorrow
TXT
text
U, UP
up, higher
UFB
ultra fine business
UTC
univesal time coordinated
VIA
via
VY
very
WDS
words
WID
with
WKD
worked
WKG
working
WL
will
WPM
words per minute
WUD
would
WX
weather
XPECT
expect
YDAY
yesterday
2
to
2NITE
tonight