inklen
Full Member level 1
Hi!
As some of you may know I'm new to electronics but I'm trying to learn and understand...
I've made couple of mic preamps and they all finally work. Now, I found multiple articles/videos on FM tramsmitter made with VCO (MAX260x). So I started to read about RF, FM modulation (and other types of modulation), LNA, PLL's, etc. Too much information, I do not understand all that yet (will be reading about it probably for the whole year).
I guess at this point I understand how FM transmitter/receiver works when it comes to VCO. So I want to try to build one. MAX 260x has this tune pin and people usually connect electret mic to it, so the sound is transmitted ("modulated"?) on top of the carrier frequency. The tune pin has its range of voltages and FM has this... what it's called... standard frequency deviation of 40 kHz!? Does this mean I can't feed the output from mic preamp to this tune pin? I think the signal swing will be too high for the tune.
And if I need to catch quieter sounds how would I do that? Compression?
Anyway, these are my current thoughts.
I have to say books on RF are NOT easy to follow.
As some of you may know I'm new to electronics but I'm trying to learn and understand...
I've made couple of mic preamps and they all finally work. Now, I found multiple articles/videos on FM tramsmitter made with VCO (MAX260x). So I started to read about RF, FM modulation (and other types of modulation), LNA, PLL's, etc. Too much information, I do not understand all that yet (will be reading about it probably for the whole year).
I guess at this point I understand how FM transmitter/receiver works when it comes to VCO. So I want to try to build one. MAX 260x has this tune pin and people usually connect electret mic to it, so the sound is transmitted ("modulated"?) on top of the carrier frequency. The tune pin has its range of voltages and FM has this... what it's called... standard frequency deviation of 40 kHz!? Does this mean I can't feed the output from mic preamp to this tune pin? I think the signal swing will be too high for the tune.
And if I need to catch quieter sounds how would I do that? Compression?
Anyway, these are my current thoughts.
I have to say books on RF are NOT easy to follow.