FOR SALE: Heathkit HRA-10-1 this is a 100 kHz calibrator intended for heathkit receivers. Octal plug-in. Could easily be used in other receivers. Uses a 6BA6 tube. New tube and new 100 kc crystal are included. Available for $59.00 plus shipping. Please e-mail off the list: af4k at hotmail.com 73 - Brian "Bry" Carling, AF4K