Russia                      13th of February            13 February 2023


   In the forest today, M.  René Coignard was assessing the quality of
   radio communication with the village, as he wants to teach the local
   inhabitants how to transmit and receive images using slow-scan
   television in the foreseeable future.  It's a method of transmitting
   images via radio communication, where all the graphics are encoded by
   sound.

   It's a shame that broadcasting has to be on the UHF range (LPD433
   frequency grid), rather than on "two metres."  On "two metres," only
   ham radio operators with a callsign can operate, and I don't have
   one.  The rule is simple: the higher the frequency, the worse
   the radio wave bends around obstacles.  Determining the maximum size
   of the obstacle is easy: divide the wavelength in half.  For "two
   metres," it will be one metre; for UHF, thirty-five centimetres.

   I receive the village in the forest confidently at a distance of up
   to one kilometre and a bit, but transmission is more complicated:
   to be heard without interference, the radio station must be held
   above oneself precisely as depicted in the photograph.  Nevertheless,
   I am definitely pleased by the fact that for confident reception
   and transmission of images using slow-scan television in the forest,
   all that is needed is to hold the radio station a little higher above
   oneself, and that's it.





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