aide memoire for on3 amateur-radio practical exam at on5ub bxe - illustrated guide by on3rt

ON5UB - Procedures for ON3 Practical Exam

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Author & CopyRights = Ravindran THANIKAIMONI

Setting-up the HF transceiver station ( Kenwood TS-570D )

Check if the power-supply unit (PSU), transceiver (TRX), microphone (MIC), Antenna Tuning Unit (ATU), Antenna (ANT) and the necessary power-supply and coaxial cables are present Connect ANT to ATU (Remember that the coaxial connectors must be locked into position and fully screwed) Connect ANT-1 INPUT of ATU to ANT-1 OUTPUT of transceiver (Remember that the coaxial connectors must be locked into position and fully screwed) Connect the microphone to the MIC connector of the transceiver Connect DC power-supply cable to transceiver Connect DC power-supply leads (first BLACK then followed by RED) to the PSU Visually cross-check that all the connections are correct and secure Connect the AC power-supply plug to the shack's AC mains socket Switch-ON the PSU and verify that 13.8 volts is available on the voltmeter display Switch-ON transceiver using the POWER button


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Adjust the audio volume to a comfortable level using the AF gain knob

Adjust the audio squelch using the SQL knob Select frequency with VFO tuning knob


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Select mode with MODE button

Select power setting with FUNCTION button to enter power setting mode and then use multi-function POWER knob to adjust power output


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HF Antenna Matching ( Kenwood AT-230 ) - Power Calibration & SWR Reduction

Visually pre-check if the transceiver-ATU-antenna set-up is correct

Check if transceiver coaxial RF ANT-1 output is correctly connected to the RF ANT-1 input on ATU unit (Remember that the coaxial connectors must be locked into position and fully screwed) Switch-on transceiver

Use MODE button to select FM (Frequency Modulation) ... don't use SSB or AM


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Use FUNCTION button to activate POWER settings dial. Lower the POWER to 10Watts Select QSO frequency for the antenna tuning procedure using VFO of transceiver

Note that the transceiver frequency must correspond to the frequency BAND on the ATU frequency dial


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If transceiver coaxial connection input is to ANT-1 of the antenna-matcher, then select MATCHING ANT-1 also on the ANTENNA dial Verify toggle switch settings = 20W - REF - SWR - CAL With toggle-switch of SWR meter on CAL (Calibration), press transmit key on MIC to generate a carrier Calibrate using the CAL (Calibration) knob-dial to align needle for the MAXIMUM value Select SWR on toggle-switch of SWR meter Verify toggle switch settings = 20W - REF - SWR - SWR Use the two (big) antenna matching dials R TUNE and X TUNE to find the lowest SWR (Below 1.5 is acceptable and 1.1 is excellent) Hint : Values around 8.2 on the two dials will give you a low SWR Re-calibrate display : Set toggle-switches to 20W - REF - SWR - CAL and use CAL dial to re-align needle with MAXIMUM value Re-select SWR on toggle-switch of SWR meter Verify toggle switch settings = 20W - REF - SWR - SWR Again use the two (big) antenna matching dials R TUNE and X TUNE to find the lowest SWR Repeat the calibration and SWR matching steps till SWR is 1.1


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HF QSO initiation

Visually pre-check if the transceiver-ATU-antenna set-up is correct and that the antenna is appropriately matched

Select FWD on toggle-switch of SWR meter Verify toggle switch settings = 20W - FWD - SWR – SWR


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Power-ON the transceiver and verify that output power is 10Watts and that output is on ANT-1

Input required QRG and MODE for QSO


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Initiate QSO : Ici ON5UB Est-ce que cette fréquence est occupe ? This is ON5UB is someone using this frequency ? CQ CQ CQ ici ON5UB Oscar November Cinq Uniform Bravo ON5UB Oscar November Cinq Uniform Bravo ON5UB qui appel et qui passe a l'écoute. Hint: While the other station is responding, use th e RIT dial to fine-tune into his signal (Don't touc h the VFO dial)

Bonjour ON5XYZ Oscar November Cinq X-Ray Yankee Zulu ici Oscar November Cinq Uniform Bravo ON5UB. Le prénom de l'opérateur est RAVI Roger Alpha Victor India. Mon QTH c'est le radio-club UBA-BXE dans ville de Bruxelles en Belgique. Mon JN Locator est JN20EU. ON5XX ici Oscar November Cinq Uniform Bravo ON5UB ON5XYZ ici ON5UB. Je vous reçois très bien. Votre signal arrive 59. Pour réaliser ce QSO j'utilise un Kenwood TS-570D avec une antenne verticale Ce QSO c'est en QRP car j'utilise seulement 10 watts. Je vous repasse le microphone pour le finale. ON5XYZ ici ON5UB ON5XYZ ici ON5UB. Merci bcp pour ce QSO je vous passe mes 73s QRO et vous souhaite une bonne journée. ON5XYZ ici Oscar November Cinq Uniform Bravo ON5UB qui passe en QRT. Write-down log-book entry with Call-sign, QRG, mode, Time (in UTC) and remarks if any.


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HF QSO Reply

Visually pre-check if the transceiver-ATU-antenna set-up is correct and that the antenna is appropriately matched

Select FWD on toggle-switch of SWR meter Verify toggle switch settings = 20W - FWD - SWR - SWR


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Power-ON the transceiver and verify that output power is 10Watts and that output is on ANT-1

Input required transmission MODE for QSO

Start scanning the required QRG frequency band


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Respond to CQ call : Hint: While the other station is transmitting, use the VFO dial to tune into his signal (Don't touch the RIT fine-tune dial

Bonjour ON5XYZ Oscar November Cinq X-Ray Yankee Zulu ici Oscar November Cinq Uniform Bravo ON5UB. ON5XYZ ici ON5UB Hint: While the other station is responding, use th e RIT dial to fine-tune into his signal (Don't touch the VFO dial )


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ON5XYZ ici ON5UB. Le prénom de l'opérateur est RAVI Roger Alpha Victor India. Mon QTH c'est le radio-club UBA-BXE dans ville de Bruxelles en Belgique. Mon JN Locator est JN20EU. ON5XYZ ici Oscar November Cinq Uniform Bravo ON5UB ON5XYZ ici ON5UB. Je vous reçois très bien. Votre signal arrive 59. Pour réaliser ce QSO j'utilise un Kenwood TS-570D avec une antenne vertical. Ce QSO c'est en QRP car j'utilise seulement 10watts. Je vous repasse le microphone pour le finale. ON5XYZ ici ON5UB ON5XYZ ici ON5UB. Merci bcp pour ce QSO je vous passe mes 73s QRO et vous souhaite une bonne journée. ON5XX ici Oscar November Cinq Uniform Bravo ON5UB qui passe en QRT. Write-down log-book entry with Call-sign, QRG, mode, Time (in UTC) and remarks if any.


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UHF QSO Initiation ( Kenwood TM-441E )

Visually pre-check if the transceiver-antenna set-up is correct Power-ON the transceiver Input required QRG for QSO Initiate QSO : Appel 70cms ici ON5UB Oscar November Cinq Uniform Bravo ON5UB Oscar November Cinq Uniform Bravo ON5UB qui appel et qui passe a l'écoute Bonjour ON5XYZ Oscar November Cinq X-Ray Yankee Zulu ici Oscar November Cinq Uniform Bravo ON5UB. Le prenom de l'operateur est RAVI Roger Alpha Victor India. Mon QTH c'est le radio-club UBA-BXE dans ville de Bruxelles en Belgique. ON5XYZ ici Oscar November Cinq Uniform Bravo ON5UB ON5XYZ ici ON5UB. Je vous reçois tres bien. Votre modulation est bonne je vous entends parfaitement. Pour realiser ce QSO j'utilise un Kenwood TM-441E avec une antenne vertical. Ce QSO c'est en QRP car j'utilise seulement 5watts. Je vous repasse le microphone pour le finale. ON5XYZ ici ON5UB ON5XYZ ici ON5UB. Merci bcp pour ce QSO je vous passe mes 73s QRO et vous souhaite une bonne journée. ON5XYZ ici Oscar November Cinq Uniform Bravo ON5UB qui passe en QRT. Write-down log-book entry with Call-sign, QRG, mode, Time (in UTC) and remarks if any.


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VHF Antenna Matching ( Monacor FSI-6 ) - Power Calibration & SWR Reduction

Visually pre-check if the transceiver-ATU-antenna set-up is correct


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Check if transceiver coaxial RF output is correctly connected to the RF ANT-1 input on ATU unit (Remember that the coaxial connectors must be locked into position and fully screwed) Switch-on transceiver Use FUNCTION button to activate POWER settings dial. Lower the POWER to 1Watt Select transceiver frequency for the antenna tuning procedure Choose VHF frequency band on the ATU (Don't use HF selection) Verify transceiver coaxial connection and if the input is to ANT-1 then select ANT-1 also on the ATU Select CALIBRATION on toggle-switch of SWR meter Press transmit key on MIC to generate a carrier Calibrate using the CALIBRATE dial to align needle with MAXIMUM value Select REFLECTED on toggle-switch of SWR meter Adjust the length of the two arms of the half-wave dipole antenna Hint: Best SWR is obtained when each arm of the hal f-wave dipole measures approximately 48cms. Fully extend the metallic tubes going from t hickest to thinnest. Use the antenna SWR dial to find the lowest SWR (Below 1.5 is acceptable and 1.1 is excellent)


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Re-select CALIBRATION on toggle-switch of SWR meter and re-calibrate using the CALIBRATE dial to align needle with MAXIMUM value Re-select REFLECTED on toggle-switch of SWR meter Again use the two (big) antenna matching dials to find the lowest SWR Repeat this calibration and SWR matching steps till SWR is 1.1 Author : Ravindran THANIKAIMONI - Radio Club de Bruxelles-Est (ON5UB – UBA BXE) Belgique This document is copyright protected under European Union Public Licence (EUPL) and Educational Community Open Source License. Everyone is permitted to copy and distribute verbatim copies of this copyrighted document, but changing it is not allowed without written consent of the author.

aide memoire for on3 amateur-radio practical exam at on5ub bxe - illustrated guide by on3rt

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