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ARRL Products: Instructor Support (More) Understanding Signals -- This Stamps in Class guide shows you how to generate, view and measure a variety of wave forms with the Parallax USB Oscilloscope and BASIC Stamp-controlled circuits. Modulation and Wave Fundamentals Board -- Now Shipping! -- This board is an instructional ready resource designed to support lesson presentations in wave fundamentals and modulation. This handy tool can be used in connection with Amateur Radio licensing instruction or with any classroom instruction of the basics of radio wave modulation fundamentals. Parallax USB Oscilloscope -- This portable two-channel digital storage oscilloscope is a handy and affordable tool for both hobbyist and student! Boe-Bot Robot Kit -- The new USB Boe-Bot is a reprogrammable robot built on a high-quality brushed aluminum chassis. US Amateur Radio Bands - ARRL Frequency Chart (50 pk) -- 50 pack. Full color, size 8.5 x 11 inches.

In assembling this list of my articles and letters over the years, I noticed that QST always chose to publish them in the Springtime.  This practice was especially meaningful to me as Spring has historically been a time of new beginnings and in our radio hobby, a time for new insights into old technical problems.   I hope you, too, will be helped and inspired by these writings of an old ham.  --Larson E. Rapp, WIOU  Kippering-on-the-Charles, MA

• Putting Dynamic Prognastication to Work
  QST April 1941
  
  
• From One Anonymity to Another
  QST July 1943
  
  
• The Circular Band Theorem
  QST April 1946
  
  
• Letter to QST Editor
  QST November 1946
  
  
• The Staggering Band Theorem
  QST April 1947
  
  
• A New Approach to Antenna Design
  QST April 1949
  
  
• 50 Years of Progress - A Report on Amateur Radio
  QST April 1950
  
  
• Numerology and Amateur Radio
  QST April 1951
  By Madame Evelyn Leigh-Falcon, a well known protégé of Larson E. Rapp, WIOU
  
  
• The Double-Spectrum Theorem
  QST April 1952
  
  
• A Radical Approach to Improved 'Phone Reception
  QST April 1954
  
  
• A Radical Approach to Single Sideband
  QST April 1955
  
  
• A Radical Approach to VFO Design
  QST April 1956
  
  
• A Compact All-Band Antenna
  QST April 1957
  
  
• The QS-59 Communications Receiver
  QST April 1959
  
  
• Larsen E. Enterprises, Inc.
  QST April 1960
  
  
• Improving the Performance of a 75S-3 Receiver
  QST April 1962
  
  
• QST Rapped
  QST October 1972