6ag7 crystal oscillator. , close enough to either band to provide sufficient drive.

6ag7 crystal oscillator. I question the purpose of the 22 ohn reziztor in the grid circuit. Aug 16, 2014 · In a QST of autumn 1941, Goodman and Bubb publish a 5-meter mobile transmitter with a 6AG7-6AG7-6V6 lineup, introducing the first practical application in ham print of the excellent 6AG7 video amplifier pentode as a crystal oscillator—a tuned-anode tri-tet crystal oscillator that quadruples to 28 MHz for doubling by the second 6AG7. A set of oscillator plug-in coils allows the 6AG7's plate circuit to be tuned to the crystal fundamental or any of its harmonics which in turn allows the 6V6 final to be used as a doubler or as a 'straight-through' amplifier. , close enough to either band to provide sufficient drive. March 1950 By using optimum feed-back along with n 6AG7, it is possible to obtain good keying of t,hc grid-plate oscillator when thc plate circuit is tuned to resonance (maximum output,) either the fundamental or the The W8EXI Wingfoot VFO Exciter Oscillator Schematic Diagram and Circuit Description: Back to the Wingfoot VFO Schematic Diagrams/Circuit Descriptions Page General Information: The heart of the Wingfoot VFO Exciter is, of course, the VFO itself. Although it was possible to design and build a s The harmonic-genrrnling ies of gridzplato oscillator are listed with those of Tri-tet and the modified Pierce in Table I. Plugging the output of my amplified DDS VFO into the crystal input of the 6CL6 transmitter (via a 1:4 transmission line transformer) worked well at driving the 6146B amplifier, but it was a compromise. I got almost 18 watts output on 80 meters, which is more than I expected from that tube, admitting that I drove it pretty hard. It uses a 6AG7 crystal oscillator driving a pair of 1625s. The plate current meter is a new-old-stock 1960s Lafayette 0 to 100 mA unit. f6x3 2iie iryzpqnnd uwf9 5kvbfk dujeu xvh qbsbm osjmf bgg