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73
Q Codes

Radio "Q" Codes
Q Codes for Radio Communication

The "Q" code is a standardized collection of three-letter message encodings, also known as a brevity code, all of which start with the letter "Q". Q codes are commonly used in voice communications as shorthand nouns, verbs, and adjectives making up phrases. Q codes can be used to confer information, or when followed by a "?" used to ask a question.

Initially developed for commercial radio-telegraph communication, these codes were later adopted by other radio services, such as marine, aviation, and amateur radio. The codes are broken down into 3 catagories for use in different radio services:

QAA to QNZ For Aviation use.

QOA to QQZ For the Maritime Services.

QRA to QUZ Used in all radio services.



Q Codes QRA-QUZ - All Radio Services

QHF Going to the Hamfest

QRA Name of your station

QRB Distance from my station

QRD Departing & destination Locations

QRG Exact frequency

QRH Is my frequency varying?

QRI Transmission Tone

QRJ Is my transmission poor?

QRK Can you understand me?

QRL Frequency is busy

QRM Man-made interference

QRN Natural interference, i.e. static

QRO Increase power

QRP Decrease power

QRQ Speed up transmission

QRR Ready for automatic operation

QRS Slow down transmission

QRT Stop sending

QRU Have you anything for me?

QRV Ready

QRX Call again

QRZ Called by ________.

QSA Signal strength

QSB Fading of signal

QSD Keying is defective

QSG # of messages sent at one time.

QSJ International telegraph charge.

QSK Break-in

QSL Acknowledge receipt

QSM Repeat last message

QSN I heard you

QSO A conversation

QSP Relay message

QSQ Doctor on board

QST General call to all stations

QSU Reply on this frequency

QSV Series of Vs on this frequency

QSW Send on this frequency

QSX I am listening on ____ frequency

QSY Change/shift frequency

QSZ Send each word, or group X times.

QTA Disregard message

QTB Confirm word count

QTC Traffic, # of messages

QTE Location - true bearing (# of degrees)

QTG 2 dashes, 10 seconds each, followed by my call sign

QTH Location

QTI Location - true track (# of degrees)

QTJ Speed (km/h)

QTL Location - true heading (# of degrees)

QTN Departure time

QTO Departure confirmation

QTP Entering dock/port

QTQ Communicate using International Code of Signals

QTR Exact time

QTS Send call sign so it can be measured

QTU Hours of station operation

QTV Monitor frequency

QTX Keep station open

QUA News of _______.

QUB Information concerning conditions: visibility, clouds, wind

QUC Number of last message received

QUD Confirmation of urgency signal

QUF Confirmation of distress signal

QUG Forced landing

QUH Current barometric pressure,



For a list of Q Codes (QAA to QNZ) used in aviation see our Guide of Aviation Q Codes.



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Normal turn around times;

"Major Custom radio's" 280 to 320 business days.

"Custom/Modified radio's" 45 to 60 business days depending on model.

"Stock/No option radios" are usually 1 to 2 weeks.

Depending on the difficulty of your build or the builds in front of it, this time could be longer.

"Major Custom" in this case means that you have added an option that requires a significant modification(s) to the stock radio that takes more than 3 hours to install. Such as the SP-1a, AD-203, upgrading amp deck, LesComm RCI Noise Filter, etc. are considered Major Custom builds.

"Custom/Modified" examples include LesComm Enhancements, Basic Clarifier mod, Amp Switch, Hi Cut Filter, etc. just to name a few. However if you add a lot of these small upgrades it could move your order to the "Major Custom" category.

"Stock/No option" means just that. These receive only a general tune up.

***Does not apply to Scanners. Scanners ship within 48 hours of purchase.

Customers are taking advantage of the MANY custom options we offer . Depending on the difficulty of your build OR THE BUILDS IN FRONT OF IT, this time could be longer!

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