This low-cost AM transmitter is tunable from 10 to 15 MHz with the help of ½J gang condenser VC1, which determines the carrier frequency of the amplitude. ... 6 comments on “ 10 to 15 MHz AM ...

TUBE AM CIRCUIT. For many years, AM transmitters used vacuum tubes for the power amplifiers and for the driver circuit. A simplified AM transmitter circuit is shown in Fig. 1. The DC high voltage ...

Coming from an IT background to an AM transmitter site might leave you with a world of questions. Mark Persons explains the ...

But this time the receiving side was swapped out, as [GreatScott] built a basic circuit around a TA7642 AM amplifier/demodulator IC, with only six passive components and a hand-wound coil.

A signal appears on the output, which has an AM component that can be picked up on a nearby AM radio receiver. The transmitter consists of oscillator stage Q1 and modulator/buffer stage Q2. Q1 is ...

[Mr. Carlson] bought a Globe Scout Model 40A ham radio transmitter at a hamfest. The 40A was a grand old transmitter full of tubes, high voltage, and a giant transformer. It is really interesting t… ...