F6DQM.... What is it ?

This is the callsign that I was assigned by the French Telecom administration.

It is personal.

It means that I have passed the exam to obtain the radioamateur licence. It identifies my

station when I send on the air.

All radioamateurs around the world have got a personal callsign. The very first letters and

figures of the callsign identify your home country (F for France, G for England, K, N or W

for the United States, U or R for Russia, BY for China, JA for Japan etc).

These first characters are the prefixes. You may find the same prefixes in airplanes identifiers.

To know more : https://www.arrl.org

 

 

AMATEUR RADIO & CB ... What differences ?

CB (Citizen Band) is the free usage of the 27 MHz band with limited power and without

any chat constraint.

Radioamateurs use several dedicated frequency bands all over the radio spectrum, from

short waves to laser waves.

They experiment new techniques of radiocommunication and concepts of transmission :

analog and numeric transmissions, phone or image, directly or through terrestrial and

satellite repeaters, etc. The communication content must relate to radio topics.

Each radioamateur is authorized to send on the air by his own administration after taking

an exam in order to control his knowledge of radiocommunication : rules, laws and

radioelectricity theory.
To listen to the Morse alphabet click here.

MY STATION

Tranceivers

HF bands : IC 730, ICOM transceiver, 100 watts, 12 volts

       Modification to get IC730 WARC bands on emission

VHF : IC 290D, ICOM VHF transceiver , 25 watts

       Modifications de l'ICOM 290D (french language)

UHF : ATR 680, Alcatel, 16 preset channels, 10 watts

       Modification de l'ATR680 pour tonalité à 1750 Hz (french language)

       Tout pour programmer l'ATR680 (french language)

50MHz/VHF/UHF : IC-E90, pocket size, 5 watts, extended RX range

       Modification to get full RX range and extended TX ranges

 

Antennas

HF bands : 20 metres long wire with a 9/1 transformer and home-made match box

       Adaptateur d'impédance pour antenne long fil (french language)

VHF, COMET colinear vertical 2.5m and HB9CV

UHF, COMET colinear vertical 2.5m

 

Miscellaneous creations (french language)

Schéma de l'alimentation 12 volts / 25 ampères

Mon premier amplificateur linéaire décamétrique

Petite alimentation stabilisée 1 ampère pour labo

Antenne VHF 5/8 d'onde

Mon premier manipulateur électronique

Manipulateur électronique à circuit CURTIS 8043

Perroquet

Capacimètre analogique simple 

Economiseur de piles

Last modification : mars 03, 2025.