. QST . July 1955 11. Oscillator circuit is at the rightin this view, frequency-multiply-ing coils and bandswitch at theleft. The two resistors alongsidethe switch add up to the 10,000ohms specified in Fig. 1 for thedropping resistor to the VR tube. symmetrically placed with respect to the opera-tion switch of the 10-A exciter, which is mounteddirectly above the VFO in the rack. Viewed from the rear, the components mountedfrom right to left on the center line are Li, Fi,L2, and the plate coils for F2, these coils beingmounted in a roughly triangular grouping togive minimum lead length to Si. L
. QST . July 1955 11. Oscillator circuit is at the rightin this view, frequency-multiply-ing coils and bandswitch at theleft. The two resistors alongsidethe switch add up to the 10,000ohms specified in Fig. 1 for thedropping resistor to the VR tube. symmetrically placed with respect to the opera-tion switch of the 10-A exciter, which is mounteddirectly above the VFO in the rack. Viewed from the rear, the components mountedfrom right to left on the center line are Li, Fi,L2, and the plate coils for F2, these coils beingmounted in a roughly triangular grouping togive minimum lead length to Si. L5 should bepositioned for the shortest leads as it is thehighest-frequency coil. After these come F3 andthe jack, Ji. A 6-prong Jones chassis-type maleconnector was used for Ji because it was avail-able in the junk box. However, any male connec-tor having 5 or more prongs will do the job. OSCILLATOR eAKe The two stages are shielded to reduce the pos-sibility of feed-back when the buffer/multiplieris operated at the os
Size: 1717px × 1456px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
