‰  NOW 35 WPM  ‰  TEXT IS FROM DECEMBER 2017 QST  PAGE 50‰

SAWDUST REGENERATIVE RECEIVER KIT  REVIEWED BY PAUL DANZER, N1II N1II ARRL.
NET IN THE SEPTEMBER 2000 ISSUE OF QST, CHARLES KITCHIN, N1TEV, TOOK THE
CLASSICAL 1930S REGENERATIVE RECEIVER AND UPDATED IT TO SOLID STATE,
RESULTING IN A FULLY FUNCTIONAL BEGINNERS RECEIVER PROJECT.  THE SAWDUST
REGENERATIVE RECEIVER KIT FROM BREADBOARD RADIO IS ONE OF THE MANY SIMILAR
DESIGNS THAT HAVE BEEN OFFERED SINCE THEN, BUT IT IS PERHAPS A LITTLE MORE
COLORFUL.  THE DESIGN IS A BIT DIFFERENT BECAUSE IT DOES NOT HAVE A
REGENERATION CONTROL, BUT IT DOES HAVE A SENSITIVITY POTENTIOMETER AT THE
ANTENNA TERMINALS.  THE SINGLE FIELD EFFECT TRANSISTOR FET PROVIDES A LOCAL
OSCILLATOR AND DETECTOR FUNCTION, FOLLOWED BY AN AUDIO AMPLIFIER.  INSTEAD
OF THE USUAL THREE WINDING AIR CORE COIL FOR ANTENNA COUPLING, TUNING, AND
REGENERATION, THIS UNIT USES FIXED WINDINGS ON A FERRITE TOROID INDUCTOR.
THE RECEIVER CAN BE USED TO TUNE ANY SEGMENT OF APPROXIMATELY 100 KHZ IN
THE RANGE OF 5 TO 8 MHZ.  AS SUPPLIED, IT IS TUNED TO THE 40 METER HAM
BAND, AND RECEIVES AM, CW, AND SSB.  IN ADDITION, IT CAN BE MATED TO A
TRANSMITTER OR USED AS A CODE PRACTICE OSCILLATOR.  PUTTING IT TOGETHER  ON
THE BREADBOARD RADIO WEBSITE, YOU CAN FIND THE INSTRUCTION MANUAL,
ADDITIONAL PICTURES, AND A DEMONSTRATION VIDEO.  IT WOULD BE A GOOD IDEA TO
UNPACK THE PARTS ON A TRAY THAT HAS SIDES, SO THEY DONT ROLL AWAY.  SOME OF
‰  END OF 35 WPM TEXT  ‰  QST DE W1AW  ƒ