Recent content by syelnmh

If class C's aren't good for AM, would that mean that AM signals would be distorted enough to almost be "filtered" out, or would it just turn into tons of noise on the receiving end? That would be fun to test, but I just don't have the time this week, or next week. I'll take some time to...

Output is AC coupled with a 0.1uF cap. I replaced the choke with a tank (470pF+47pF, 1uH --> 6.99963MHz, pretty close) Results are just about the same as the choke. On my scope, the wave is a bit less fuzzy (why?) , but the amplitude is just about the same.

Tuned amplifier... interesting. I just went and replaced the collector resistor with a choke, and it's now at 1/2 the original input (rather than 1/8). Perhaps I should just scrap this amplifier and try the tuned one.

Thanks for your responses, I now have much to think about. I'm really not good with the math at all and only know a bit of the theory behind these amplifiers (my goal to fix by building one of these), but I do have some tools to make a few measurements: Collector current: 127uA with 9V input...

Not sure if this is the right place to post, but here we go, my first question: I've been searching around for a simple circuit for amplifying rf at around 7MHz, and went ahead and followed this guide, 2nd picture down, and built the amplifier. It works, even with some small resistor value...