FMUSER INTERNATIONAL GROUP INC
Address: Room305, HuiLanGe, No.273 HuangPu Road West, TianHe District., GuangZhou, China, 510620
Address in Chinese: 广州市天河区黄埔大道西273号惠兰阁305
---------------------------------------------
Phone/Whatsapp/Wechat: +86 15800205544
Skype: Erin-huang2
Email: [email protected]
What is Transmitter, Modulator, Exciter, Amplifier?
Transmitter = Modulator + (pre-amplifier + final-amplifier) The power amplifier in the bracket is the transmitter
Transmitter = (modulator + pre-amplifier) + last-amplifier The brackets are the exciter of the transmitter
The difference between the exciter and the modulator is that, in addition to the basic modulation function (converting audio and video AV signals into radio frequency RF signals), is it whether to add the amplification function of the pre-stage part, and the amplification function is the exciter, and there is no pre-stage. amplification function Is the modulator.
Because the modulator does not involve the influence of pre-stage power amplification, there is no influence of the narrow channel of the power amplifier, and it can be adjusted in the entire frequency band (including VHF and UHF).
But as a transmitter, it contains a power amplifier, which limits the frequency adjustable range.
In other words, even if the transmitter uses an agile modulator, even if the modulator is adjustable over the entire frequency band, the frequency adjustment range of the overall transmitter is limited.
