‰  NOW 7 1/2 WPM  ‰  TEXT IS FROM MAY 2019 QST PAGE 83  ‰

CONCENTRATING ENTIRELY ON TELEGRAPH EQUIPMENT.  PRODUCTION OF STREAM KEYS
WAS SUBSEQUENTLY TAKEN UP THROUGH 1947 BY TELEGRAPH APPARATUS COMPANY TAC,
A CHICAGO PARTNERSHIP OF WHICH MCELROY WAS A PRINCIPAL.  STREAM KEYS FROM
TAC TACS ITERATION OF THE STREAM KEY WAS ADVERTISED AS DESIGNED BY THE
‰  END OF 7 1/2 WPM TEXT  ‰  QST DE W1AW  ƒ