Abbreviations

Hew Lines VA7HU

AC

Alternating Current

ADIF

Amateur Data Interchange Format

AFC

Automatic Frequency Control

AFSK

Audio Frequency Shift Keying

AGC

Automatic Gain Control

ALC

Automatic Level Control

AM

Amplitude Modulation

AMTOR

Amateur Teleprinting Over Radio

AOS

Acquisition Of Signal

ARQ

Automatic Repeat Request

ASCII

American National Standard Code for Information Interchange

BBS

Bulletin Board System

BCD

Binary Coded Decimal

BPF

Bandpass Filter

bps

The number of binary digits transferred per second on a serial link

BPSK31/63/125

Binary Phase-Shift Keying

CAT

Computer Assisted Transceiver

CCW

Counter-clockwise

CNTY

County

CPU

Central Processing Unit, the heart of a computer

CQZ

CQ Zone number

CR

ASCII Carriage Control character generated by the "Enter" or "Return" key on a PC keyboard.

CSV

A standard data file format where fields of a data record are separated by commas

CTS

Clear To Send - an RS-232 hardware handshaking signal.

CW

Continuous Wave - as in Morse code

Clockwise

CW-LSB

CW using LSB

CW-R

CW Reverse sideband

CW-USB

CW using USB

DATA-FM

Data transmission using FM

DATA-LSB

Data transmission using LSB

DATA-USB

Data transmission using USB

dB

decibel

DC

Direct Current

DIG

Digital

DLL

Microsoft Dynamically Linked Library

DOK

German Administrative District

DPDT

Double-Pole, Double-Throw

DSP

Digital Signal Processing

DSR

Data Set Ready - an RS-232 hardware handshaking signal

DST

Daylight Savings Time

DTR

Data Terminal Ready - an RS-232 hardware handshaking signal

DVK

Digital Voice Keyer

DXCC

DX Century Club award

eQSL

An electronic QSL facility using the Internet. Visit www.eqsl.cc for more information

FEC

Forward Error Detection

FFT

Fast Fourier Transform

FIR

Finite Impulse Response FiIter

FM

Frequency Modulation

Freq

Frequency

FSK

Frequency Shift Keying

FSK-R

FSK Reversed sideband

FSK-W

One of the MCBS modes of MMVARI. It is a mode for VHF/UHF Satellite operation.

GMSK

Gaussian Minimum Shift Keying

GMT

Greenwich Mean Time (see UTC)

GND

Ground

G-TOR

Golay-Teletype Over Radio

HELL

Hellschreiber

HEX

Hexadecimal numbering system that uses base 16 with digits from 0..9 and letters from A..F

HF

High Frequency

HP

High Pass

Hz

Hertz

IARU

International Amateur Radio Union

IF

Intermediate Frequency

IMD

Intermodulation Distortion

I/O

Computer Input/Output

IOTA

Islands On The Air

ITU

International Telecommunication Union

ITUZ

ITU Zone number

JCC

Japan Century Cities

JCG

Japan Century Gunn

KEPS

Keplerian Elements

KHz

Kilohertz

LAN

Local Area Network

LCID

Microsoft Locale ID

LCD

Liquid Crystal Display

LED

Light Emitting Diode

LOS

Loss Of Signal

LoTW

Logbook of The World, an ARRL project - see http://www.arrl.org/lotw/

LP

Low Pass

LPT

Line Printer (Parallel) Port

LSB

Lower Sideband

Mb

Megabyte

MBCS

Multibyte Character Set

MDI

Windows Multi-Document Interface

MFSK

Multi-Frequency Shift Keying

MFSK-L

Multi-Frequency Shift Keying using LSB

MFSK-U

Multi-Frequency Shift Keying using USB

MHz

Megahertz

MMTTY

RTTY Encoding and Decoding engine written by Makoto Mori JH3HHT that supports RTTY.

MMVARI

Digital encoding and decoding engine written by Makoto Mori JH3HHT that supports PSK and RTTY.

ms

Millisecond

MOX

Manually Operated Switch

MT63

Multi-Tone frequency shift keying

NCDXF

Northern California DX Foundation Inc.

PACTOR

PACket Over Radio

PBT

Passband Tuning

PC

Personal Computer

Pfx

Prefix

PKT

Packet

PKT-LSB

Packet using LSB

PKT-USB

Packet using USB

PPM

Parts per Million

PSK31/63/125

A digital mode of communications using Phase Shift Keying

PTT

Push To Talk

QPSK

Quadrature phase-shift keying

QRZ

QRZ.COM Callbook

RAC

Radio Amateur Callbook

RAM

Random-Access Memory

RCP

Radio Control Panel

RF

Radio Frequency

RIT

Receiver Incremental Tuning

RTTY

Radioteletype

RTTY-L

Radioteletype using LSB

 RTTY-U

Radioteletype using USB

RSGB

The Radio Society of Great Britain

RTS

Request To Send - an RS-232 hardware handshaking signal

Rx

Receive

RxD

Receive Data

SDR

Software Defined Radios

SFI

Solar Flare Index

SO2R

Single Operator, Two Radios

SO2V

Single Operator Twp VFOs

SSB

Single Sideband

SSTV

Slow Scan Television

SWR

Standing Wave Ratio

TTL

Transistor-Transistor Logic

TNC

Terminal Node Controller

Tx

Transmit

TxD

Transmit Data

UHF

Ultra-High Frequency

UOS

Unshift On Space

UQF

Universal QSL Format - A weird logging format no longer used by modern logging programs. It is available as an option with Logger32 when exporting logs for those who still have needs for this format.

USB

Upper Sideband
Universal Serial Bus

UTC

Coordinated Universal Time For those who are curious as to why the letters UTC do not match the definition, see the subheading 'Abbreviation' at www.en.wikipedia.org/wiki/Coordinated_Universal_Time. (See GMT)

VB

Microsoft Visual Basic


VFO

Variable Frequency Oscillator

VHF

Very High Frequency

VOX

Voice operated switch

VSC

Virtual SteppIR Interface

WAE

Worked All Europe award

WAJA

Worked All JA award

WARC

World Amateur Radio Conference

WAS

Worked All States award

W-FM

Wide band FM

wpm

Words per minute

WPX

Worked All Prefixes award

XML

Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human and machine readable.

ZULU

Coordinated Universal Time