Hi,
I am new here but not a VERY beginner guy (a life long learner hobbyist).
I am pretty curious in RF electronics from my starting days. It's wireless so it seems like a magic! I already made many toy FM transmitters and a microcontroller controlled PLL FM transmitter too. Being engage with transmitter, I knew that
FM normally transmits in VHF band and for VHF RF amp, a special 'RF power transistor' is needed. But Ham radios transmit in few MHz. And few links shows that using a very simple 'medium power transistor' they transmit around 100km far! Amazing!
Designer says this one with SL100 transistor, he transmitted 80km-
http://www.flashwebhost.com/circuit/dsb_transmitter_for_hams.php
But I never read and thought about few MHz RF amplifier and its transistor's essential transient frequency and gain. He also said FETs like IRF850 etc also work there. Almost many general power transistor or mosfet work for few MHz RF amp to achieve 100s of KMs?
I am new here but not a VERY beginner guy (a life long learner hobbyist).
I am pretty curious in RF electronics from my starting days. It's wireless so it seems like a magic! I already made many toy FM transmitters and a microcontroller controlled PLL FM transmitter too. Being engage with transmitter, I knew that
FM normally transmits in VHF band and for VHF RF amp, a special 'RF power transistor' is needed. But Ham radios transmit in few MHz. And few links shows that using a very simple 'medium power transistor' they transmit around 100km far! Amazing!
Designer says this one with SL100 transistor, he transmitted 80km-
http://www.flashwebhost.com/circuit/dsb_transmitter_for_hams.php
But I never read and thought about few MHz RF amplifier and its transistor's essential transient frequency and gain. He also said FETs like IRF850 etc also work there. Almost many general power transistor or mosfet work for few MHz RF amp to achieve 100s of KMs?
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