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Amateur Radio/Getting started: Difference between revisions

From London Hackspace Wiki
some Q codes/tables, etc.
(some Q codes/tables, etc.)
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See [http://www.g0mwt.org.uk/training/courses/files/handouts/cars-sample-qsos.pdf Sample QSOs]<!-- would be better as wiki text -->
See [http://www.g0mwt.org.uk/training/courses/files/handouts/cars-sample-qsos.pdf Sample QSOs]<!-- would be better as wiki text -->


===Q Codes & Abbreviations===
===Q Codes===
<!-- tables with the most useful -->
A few of the more common ones, which also have to be learnt for the Intermediate Exam. Q-Codes can either be a question or an answer. For example QRL? would mean Is this frequency in use? Whereas a response of QRL would mean The frequency is in use.
{| class="wikitable"
!Q-Code!!Meaning
|-
| QRL||The frequency is in use
|-
| QRM||Interference from other stations (M = man made interference)
|-
| QRN||Interference from static/thunderstorms (N = natural interference)
|-
| QRP||Low Power
|-
| QRT||Closing down my station
|-
| QRZ||Who is calling me? (Who’Z calling?)
|-
| QSB||Fading, usually signals going up and down in strength
|-
| QSL||Transmission successfully received (as in QSL card)
|-
| QSO||Contact with a station
|-
| QSY||Change frequency
|-
| QTH||Location, usually the nearest town (H = home)
|}
===Abbreviations===
There are a handful of abbreviations that you need to be aware of.
{| class="wikitable"
!Abbreviation!!Meaning
|-
| CQ||General cal, any station may reply (seek you)
|-
| DX||Long Distance (on HF this normally means outside your own continent)
|-
| SIG||Signals
|-
| UR||Your
|-
| WX||Weather
|-
| DE||From
|-
| K||Go Ahead (your turn to transmit)
|-
| R||Roger (transmission received and understood)
|}
===RST Reports===
Often in a QSO the strength and quality of the signal is exchanged. For the reporting of strength and readability, and tone with Morse code the RST system is the de facto standard. a very strong totally readable signal would be described as RS59 or more commonly "5 and 9". Most rigs have a signal or S meter.
{| class="wikitable"
!Value!!Readability!!Strength!!Tone
|-
| 1||Unreadable||Faint, barely perceptible||Extremely Rough Note
|-
| 2||Barely Readable||Very Weak||Very Rough Note
|-
| 3||Readable with Difficulty||Weak||Rough Note
|-
| 4||Readable with little difficulty||Fair||Fairly Rough note
|-
| 5||Totally Readable||Fairly Good||Note Modulated with a Strong Ripple
|-
| 6||||Good||Modulated Note
|-
| 7||||Moderately Strong||Near DC Note but with a Smooth Ripple
|-
| 8||||Strong||Good DC Note with a Trace of Ripple
|-
| 9||||Very Strong||Pure DC Note
|}


== Repeaters ==
== Repeaters ==