Amateur radio has been one of my favorite hobbies for more than 60 years.
Updated on September 26, 2022

1963 station : AM home made transmitter, G207 Geloso receiver, home build phasing type SSBtransmitter  My F2DC station around 1963 (Photo courtesy of F5IA : thanks AndrĂ©).
  From left to right : home-made AM Transmitter, Geloso G207 Receiver, Home built Phasing type 14MHz SSB transmitter
 
 
 


  Now.
  I'm currently using an Elecraft K2 transceiver built from a kit and the DC7 home made transceiver described in this site. From left to right, a home made linear amplifier mainly used for SSTV, home made 13.8 V power supply, the K2 and an old Drake SPR4 receiver. A HM102 Heathkit SWR/ power meter is above the power supply. A FT290 2 m transceiver and some other equipment stand on the upper shelf.
 



  Picture reception and transmission.
Over the years, picture transmission and reception has always been a part of my ham activity :   
  - Around 1968, I was interested in weather satellites picture reception and built a specially devoted equipment (click here) .
  - 1969 : I designed and built a BW solid state (except the CRT) SSTV monitor. In December 2020, I restored this old monitor and was able to display 8 seconds BW pictures on its screen (click here).
  - From 1993 to the begining of the 2000s, my son Lionel and I designed and tested several methods to improve SSTV reception. Real time processing of SSTV signals allows a significant improvement of picture quality when conditions are poor (click here for more info).
                                         
                                           - In connection with my aeromodel activities, I was involved in 1994, with some friends of the local aeromodel club, in the TV transmission of pictures taken by a camera carried by a radio-controlled aircraft (click here)
                       

  Home made test equipment.
  As you probably guessed from the above lines, I'm more interested in the technical side of amateur radio than in its operating aspects. A good part of my shack is filled with measuring equipment, mainly second hand. Over the years I have built some additional test devices : two-tones AF generator, low phase noise RF oscillators for RX intermodulation distorsion evaluation, VNA, etc. (click here)
  


 

  Many years ago, I built a high performance transceiver : its design changed over the years and its present state is a prototype working on the 14 MHz band with an output power of 10 Watts (click here for more information).
 
 
 
 

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