Guy Olinger K2AV said: "Those chokes are of a material that is designed for audio frequencies. I can still remember the day's in my youth when I could hear the 15 kHz horizontal sweep frequency.
I would not be using those for a frequency more than a hundred times the frequency they were designed for." Sorry, but I have to disagree. Those chokes are made for the horizontal and vertical frequencies, the horizontal being around 15 kHz. However it is a triangle wave. With the scan going across and then the fly back (steep part of the wave) coming back. The fly back part of the wave moves the scanning dot back much, much faster than the sweep part of the triangle wave that creates the line on the screen. If you were to check the timing on just the fly back part of the wave it would be much, much higher in frequency. So the cores would have to be suitable for a much higher frequency than 15 kHz. They would have to be suitable for the frequency of the steep part of the triangle wave. Hopefully I explained that in an understandable manner...... 73 Stan K8LL NW Ohio, USA 10-10# 76801 FP# 3255 100WattsAndAWire# 1939 Propagation is our master . . . but sometimes the master is cruel! _________________ Topband Reflector Archives - http://www.contesting.com/_topband
