Adjust the loading control while checking that the signal generator still is at the frequency of maximum. The small coil by itself on the right is the 10 meter coil. The RF choke on the right is connected across the output of the amplifier and serves two purposes: The screen grid decoupling capacitor is conveniently made from some copper sheet on which the screen grid connector are soldered in the form of finger stock around a hole. This was ideal for my purposes, and it looked like I could scrounge up all of the necessary parts, except for the grid input circuit, which was a commercially available in sub-assembly.
how to build a hf linear amplifier
One power supply is a linear supply with huge transformers exceeding lbs, and the other power supply is a switching power supply weighing only 55 lbs. This was ideal for my purposes, and it looked like I could scrounge up all of the necessary parts, except for the grid input circuit, which was a commercially available in sub-assembly. A plethora of features are designed into Prometheus to protect against amplifier damage. This will give you the DC idle volts at the plate. Additionally, the band switch is controllable remotely over the RS interface via PC or the optional remote control head.
Ham Amplifier | eBay
A homebrew amplifier with watts of output would make a big improvement on the air, and seemed like the ideal follow up project. Although our custom transformers are more expensive and difficult to manufacture than competing designs, they do not saturate or heat up beyond the Curie point, thereby becoming irreversibly damaged and destroying the RF transistors in the process. The Centralab "doorknob" plate coupling capacitor is visible on the left. Hand bending the sheet metal for our amp chassis means that not only do our prices stay lower, all of our components fit exactly as intended every time. Clearly it is not the cheapest watts per dollar approach but K9AY summarises the case for the module approach: How to preserve your tube lifespan? But if you want to preserve the lifespan of both your transceiver last stage and amplifier, drive this latter with 80 W in.
See the About Us and Manufacturing pages for details. The scale is 1 - 10, with 1 being poor and 10 being excellent. The small coil by itself on the right is the 10 meter coil. This is a pf 5kv unit designed for transmitter service. What do I do if you decide to quit manufacturing the amplifier because not enough people buy them or if you go out of business?