In a message on Tuesday 09-05-16 Tony Langdon said to Holger Granholm:   
      
   Hi Tony,   
      
    HG> So, finally it all depends upon from which viewpoint you look at it.   
      
   TL> No, it's simple.  If the output frequency is lower than the input   
   TL> (e.g. 1296 MHz in, 28 MHz out), then it's a downconverter.  If the   
   TL> output frequency is higher than the input frequency (e.g. 136 kHz to   
   TL> 3.5 MHz), then it's an upconverter.   
      
   Still simpler it is to leave out the up- or down-, and just name it a   
   converter.   
      
   TL> That rule works whether you're transmitting or receiving.   
      
   In the case of conversion to from a frequency, a transverter does both.   
   My Tokyo Hy-Power VHF-HF transverter does both.   
      
   It converts a HF amateur band to 144 MHz when receiving, and a 144 MHz   
   transmitting signal to a HF amateur band, 3.5, 7, 14, 21 or 28 MHz on   
   transmit.   
      
      
   Have a nice day,   
      
   Holger   
      
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