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> 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"

       

       F 1 L V T 

  - 4/6 -

.<.   .>.

Shape2

       Contact : F1LVT@yahoo.fr


Presentation 


Projects and constructions

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

    * All bands

    * VHF

    * UHF

> Message generator and identification  decoder of 406 beacon

    * Frame Generator

    * Frame Decoder

> Radio Direction Finding 

    * Direction measurement

    * Doppler

    * Homing and TDOA

> Transmissions

    * Projects

    * Cross Band Repeater

> Miscellaneous

    * Some technical presentations

    * Some websites to visit

> Annexes: DIY constructions, Tools

AntDopp

French


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