F 1 L V T

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- 5E/7 -

.<.   .>.

> Projects and constructions

> Beacons (especially 121.5 MHz and 406 MHz distress beacons)

    * All bands

    * VHF

    * UHF

> Programmed component for frame generator and decoder

    * Message Generator

    * Identification Decoder

> Construction of generator and decoder of 406 beacon

   * Message Generator

   * 406 Beacon Decoder

> Radio Direction Finding

    * Direction measurement

    * Doppler

    * Homing and TDOA

> Transmissions

    * Projects

    * Cross Band Repeater

> Miscellaneous 

    * Some technical presentations

    * Some websites to visit

> Annexes: 

     Constructions 1     Constructions 2     Tools

> Radio Direction Finding

    * Direction measurement

- Principle

- Attenuator with frequency shift (with F5JTR)

- The Antenna "Cut Loop"

   * Doppler

- Operation of a Doppler Direction Finder

- Particular operation modes

- The Montreal Doppler 3V2: building and operation

- Construction of the Montreal Doppler 3-V2

- Montreal Doppler 3-V2 operation

- Programming the 3 PIC of the Montreal 3-V2

- Doppler Radio Direction Finding on radiosondes

+ Italian Version (traduzione di Aki IZ0MVN)

- Test Doppler COMELEC RD2

- Comparison of three Doppler

   * Homing and TDOA

- Principle

- The TDOA system and its transformation into Homing

- Homing "4 quadrants"

Contact : F1LVT@yahoo.fr