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Monthly Support page for the Vintage Radio column in QST magazine. Most months I provide additional information about the profiled radio or content of the column.  


March 2014
The Reinartz Tuner


The Reinartz Tuner

John Reinartz had a knack for developing radios circuits and then explaining them in a plain common sense way that was easy to understand. In 1921, Reinartz was publishing a magazine which was distributed free: "How to Build Receivers and Transmitters at Low Cost." In 1921 he developed the Reinartz Tuner circuit. It was given wide publicity and thousands were built. It was the predecessor of most early receiving set tuners. His writings on the tuner and its improvements were published in QST in June, 1921, March, 1922 and October, 1922, and in other magazines.


Jon Reinartz
John Reinartz

                                 Single tube, WD-11. Very early receiver.
2 stage

2 stage-1

                      Later receiver with 2-stage amp, using 01-A tubes.

                   Note the coil form which uses an odd number of dowels.

2 stage-3
                        Early receiver with type 199 tubes, 2 stage amp.
3bgt Reinartz
Reinartz Tuner and 5-Stage amp made by Cass Risley 3BGT in 1922. (also see January 2014 QST)
Schematic matches cutaway drawing (right)                         
Click on either for a larger version in a new window.                   
Coil Pattern

Switch contacts

         Switch contacts made from Paper faseners purchased at Staples.

                                Switch wiper made of brass stock.

      Pattern (left) can be used with Fiber paper, thin cardboard, or plastic.




      Collector Radio Shows worth attending which are good sources
                   of early parts for both ham and radio collectors.

  • March 21, 22, 23, 2014 - The Carolinas AWA Show – Click
  • May 2, 3, 2014 - The New England Amateur Radio Festival—
                                NEAR-Fest XV at Deerfield Fairgrounds - Click
  • May 9, 10, 2014 - Kutztown Radio Show in Pennsylvania - Click
This coil information and schematic is contained in the Wireless World magaine in the PDF below.
Coil info

Click on photo for a larger version in a new window


Panel layouts, click on either for a larger version in a new window.       
These can be printed and used for patterns.                          .

Magazine articles on building the Reinartz Tuner

        QST Magazine

Jun 1921 - QST (Pg. 5-7)
"A Receiving Tuner for CW"

Mar 1922 - QST (Pg. 8-10)
"The Improved Reinartz Tuner "

Oct 1922 - QST (Pg. 14-15)
"Radio Amplification with the Reinartz Tuner"

Click - Members only
       QST search page

Pages from Radio-Age-1922-09-ReinatrtzTuner
Pages from Radio Age 1922-09

How to Build a Reinatrtz Tuner

Pages from Radio-Age-1922-11-ReinartzTuner-plus
Pages from Radio Age 1922-11 Tuner,

Add an RF and AF Stage

Pages from Radio-Age-1923-03-ReinartzTuner-LayOut
Pages from Radio Age 1923-03

Tuner panel Layout

Reinartz Popular-Radio-1924-12
Pages from Popular Radio-1924-12

How to Build a Reinartz Tuner

Wireless World
Good Coil winding info
How to Build a Reinartz Tuner

For more on John Reinartz and his life, Click Here