Bill N2CQR Builds Another Mythbuster Transceiver
Автор: SolderSmoke -- Homebrew Ham Radio
Загружено: 2024-10-30
Просмотров: 2711
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The blog post also has some still photos:
https://soldersmoke.blogspot.com/2024...
This one is for 20 meters (no need for 75) and will go to the Dominican Republic.
6 crystal filter at 5.2 MHz.
VFO from old Yaesu FT-101
Termination Insensitive IF amplifiers using boards from Mostly DIY RF
No RF amp ahead of the mixer.
First mixer is homebrew diode ring.
Bandpass filter has 4 LC circuits. Steep skirts. Low insertion loss.
Bal Mod/Product detector has two diodes (singly balanced)
Carrier osc is crystal controlled and homebrew.
Audio amp starts with a 2N3904 amplifier follwed by an LM386 board.
Transmitter portion will be done next.
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