[KYHAM] Radio Theory and Construction Workshop

[Bill Fuqua]

    Many thanks to David Glass ( WA4QAL)  who came to our last workshop. He 
provided a very nice demonstration of an old time diode detector made of 
pieces of metallic crystals and  a sewing needle. He had nice samples of 
galena and iron pyrites crystals that worked very nicely and our students 
had the experience of finding just the "good" spots on the crystals to make 
a working detector. His timing was just right because the one  of the 
students had just finished her "crystal set" version of the radio kit and 
another had finished his  at the previous meeting. He even donated a couple 
of samples of these crystals and his home made wide  band impedance coupler 
to the workshop for future demonstrations.
  Thank  you again David.

73
Bill wa4lav