[Elecraft] K2 #4130 power output result

[Don Brown]

Hi

This looks good to me. The basic K2 power sensing circuit will not be exact. If you have the KAT2, KAT100 OR KPA100 the power calibration can be set almost perfect because of the better directional coupler type power meter circuit. The basic K2 uses a peak detector using a diode and a couple of precision resistors and some filtering. There are no adjustments with this circuit so it can vary a little from K2 to K2 mostly due to differences in the diode

Don Brown
KD5NDB


  ----- Original Message ----- 
  From: JEAN-FRANCOIS MENARD<mailto:k2 at cima.ca> 
  To: elecraft at mailman.qth.net<mailto:elecraft at mailman.qth.net> 
  Sent: Friday, July 16, 2004 11:07 AM
  Subject: [Elecraft] K2 #4130 power output result


  Now, after a little technical briefing by Tom N0SS and Gary AB7MY 
  (thanks),

  There are my K2 power output results using the DL1 dummy load when 
  applying the formula written in the build sheet of the DL1 and my VMM 
  set to DC.

    BAND Power set on K2 @ 5W Power set on K2 @ 10W

  160M (1.9 Mhz) 5.2W 10.9W

  80M (3.750 Mhz) 5.3W 10.8W

  40M (7.070 Mhz) 5.5W 11.0W

  20M (14.100 Mhz) 4.5W 9.5W

  15M (21.200 Mhz) 4.9W 9.3W

  10M (28.500 Mhz) 4.3W 8.6W


  Is it these values are in the average with most builders ???


  ===============================================
  Jean-François Ménard / VA2VYZ
  k2 at cima.ca<mailto:k2 at cima.ca>
  Elecraft K2 #4130

  Amateur Radio Club of Sherbrooke, Quebec, Canada

  Web site: http://homepage.mac.com/jfmenard<http://homepage.mac.com/jfmenard>
  ===============================================
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