Questions tagged [trf]
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5 questions
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How does this oscillator circuit act as a radio reciever?
Sorry for the long text I am really sorry
So I was saw a youtube video about a MW reciever(I know I shouldn't trust videos on youtube for electronic circuits,but the circuit seemed easy and had barely ...
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I tried making a trf radio receiver,but it stops working after connecting the lc circuit
So,i tried making a radio receiver and found this circuit from this video https://youtu.be/PYjRSB0ANoU?si=eFcK9MXnqVnIRkv7 when I power it without connecting the lc circuit and antenna, it produces a ...
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radio on a chip
Can Radios on a Chip be used as RF amplifiers in multi-stage TRF Radios?
MK 484; ZN414;
The idea is to replace tubes with low safe voltage semiconductor modules in retrofitting 1920's TRF Radios as ...
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2
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Why are there more than one RF amplifier in a TRF receiver?
In literature TRF receivers are said to be hard to tune because they have many RF amplifier stages in reception. They all need to be tuned each time for a different broadcast which makes things hard.
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A question about super-heterodyne receivers
My question is about the following paragraph:
The text implies that the heterodyning process is basically done to obtain a fixed frequency before amplification takes place. Here I don't understand why....