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* About me * Download * Home * Download * HAM radio transceiver * Introduction on electronic filter * Previous * Next HF POWER-AMPLIFIER MRF101 This blog video discusses the power amp design of the DIY transceiver. A single MRF101 LDMOS RF power Mosfet delivers up to 80W in the 20m, 40m and 80m band. * January 9, 2022 * HAM radio transceiver * admin read more PREAMPLIFIER DESIGN AND TEST You can not drive the power amplifier (MFR101A ) directly with the output of the AD831 mixer. 10dBm power ist not enough. So I did design a 14dB voltage gain amplifier to get the needed power to fully get the final 50W output from the power amp. * October 24, 2021 * HAM radio transceiver * admin read more DIGITAL FILTER EXPERIMENTS ON STM32F4 Here are some experiments with a simple first IIR filter implemented on a STM32F4. After some theory the design and implementation is presented. Enjoy! * August 12, 2021 * Introduction on electronic filter * admin read more ACTIVE FILTER EXPERIMENTS We look at the basic concepts of active filters, design a 2nd order lowpass with TI’s filterdesign tool and then build a filter and measure the filter performance on the lab bench. Maybe you want to watch the introduction to electronics filters first, since I do reference to that video so what. * August 10, 2021 * Introduction on electronic filter * admin read more INTRODUCTION ON ELECTRONIC FILTERS This series of videos give you an overview/introduction on electronic filters. basic introduction to electronics filters analog / passiv filters crystal filters active filters digital filters This first video talks about filter specifications, filter types, basic RC filter discussion and shrot discussion on s-parameters. Here you can find more videos about “electronic filters”: * August 9, 2021 * Introduction on electronic filter * admin read more RF MIXERS This video discusses theory, active and passive mixers, simulation with LTSpice and GNU radio. Watch the video here: * June 7, 2021 * HAM radio transceiver * admin read more DESIGN BANDPASS AND LOWPASS FILTER This is how I did design the bandpass and lowpass filters. * May 5, 2021 * HAM radio transceiver * admin read more DESIGN A CRYSTAL LADDER FILTER See how I approached the design of a 8 pole crystal ladder filter for SSB @9MHz and with a bandwidth of 2.4 kHz. * May 3, 2021 * HAM radio transceiver * admin read more DESIGN OF THE ANTENNA AMPLIFIER Check out how the antenna amplifier got designed, simulated and tested. * April 19, 2021 * HAM radio transceiver * admin read more TYPES OF RADIO RECEIVERS I did choose to build a super-heterodyne type of receiver. What alternatives do we have? * April 4, 2021 * HAM radio transceiver * admin read more INTRODUCTION VIDEO Hi all here you find a introduction of the DIY HAM radio transceiver. * April 4, 2021 * HAM radio transceiver * admin read more DIY HAM RADIO TRANSCEIVER Hi all, I did build my first ham radio transceiver and I thought I let you know how I did it. This might give you ideas about your own HF experiments and give me some feedback from you guys and ideas for new projects. introduction, Types of radio receiver antenna amplifier bandpass and lowpass-filter design […] * February 28, 2021 * HAM radio transceiver * admin read more DOWNLOAD Dokumentation DIY Transceiver: Types of transceivers Analog bandpassfilter Crystal filters Digital Filters Mixers_1 Mixers_2 Pre-Amplifier Power-Amplifier Documentation Filter Theory & Design: Introduction to electronic filters Active filters Digital Filters Software: Digital Filter IIR on STM32F4 Discovery with PmodI2S2 Transceiver CPU on STM32F735DK with TouchGFX Schematics: Crystal Filter Board Bandpass Board Mic amplifier and two tone […] * May 9, 2021 * Download * admin read more * 1 * 2 RECENT POSTS * HF Power-Amplifier MRF101 * Preamplifier design and test * Digital filter experiments on STM32F4 * Active filter experiments * Introduction on electronic filters RECENT COMMENTS CATEGORIES * Download * HAM radio transceiver * Introduction on electronic filter HB9GZE CONTACT stefan@hb9gze.ch HB9GZE *