Technical Topics > The RF Workbench
Someone had Corsair II AM TX experience?
Stretchyman:
With any decent design using a PCB is by far the best method and sure they used to be expensive but now not so. Shame as I've just given away 20+ LuLu PCBs to a UK chap and don't have any left.
Also the main 'problem' is to how you're going to generate the frequency you want in the first place.
So may I ask, what method do you intend to use?
Str.
Stretchyman:
Just check "Simplest Tx" post on here.
To modulate just use the class D amps mentioned.
Super simple!
Str.
Charlie_Dont_Surf:
--- Quote from: Stretchyman on February 12, 2021, 2152 UTC ---Just depends on how you drive it, squarewave = class E, sine =C, sure there's more to it as the o/p has to be bandpass but still the quicker the switching the greater the eff% pure and simples.
Str.
--- End quote ---
Umm yeah, there is more to it.
Like, amplifier class is not defined by how it is driven. It is defined by the shape of the drain/collector waveforms.
Also sinewave drive can also be Class A or B, in addition to C, it depends upon the associated drain waveform. Squarewave drive can associated with class D,E,F, S or J.
Charlie_Dont_Surf:
--- Quote from: Intruder on February 13, 2021, 1009 UTC ---The reason why it gets some much attention is that many have been built and used in the past. I've found out so much about the designs asking the right people. The parts are easy to get hold of and if your into home construction it can cost under 20 UK pounds to build depending on the version.
I've built Corsette (LM386), Corsair (LM386) and Commando (Transformer) that's on Dave's website and in my opinion they all work well.
--- End quote ---
Shhh. Quiet. You're destroying Stretchy's bullshit narrative that everyone MUST.THINK.LIKE.HE.DOES and no one could be happy and content without doing what he wants. There's probably been more Corsette, Corsairs (I&II) and Commandos built than he has ever sold and that gets under his skin.
Stretchyman:
How wrong you are...
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