[CW] Fw: Beautiful Pictures and Interesting Words about Radio

[Bob]

A close up of the xtal ...


----- Original Message ----- 
From: Bob 
To: CW Reflector 
Sent: Sunday, February 14, 2010 4:16 PM
Subject: Re: [CW] Beautiful Pictures and Interesting Words about Radio


We made one like this a few years ago ...  from a 1916 publication ...

Whitey K1VV


  ----- Original Message ----- 
  From: D.J.J. Ring, Jr. 
  To: CW Reflector 
  Sent: Sunday, March 14, 2010 1:42 PM
  Subject: [CW] Beautiful Pictures and Interesting Words about Radio


  It is off topic because this type of radio receiver cannot receive CW - continuous wave keyed Morse signals.

  They can receive spark - and a small spark generator (buzzer) is used to tune up the crystal detector!

  I could not pass this by without telling you all about it.

  http://www.r-type.org/static/crystal.htm

  73

  DR




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