YO3DAC - VA3IUL    

Iulian Rosu

RF Technical Articles

"To invent, you need a good imagination and a pile of junk" - Thomas Alva Edison (1847-1931)

RF BASICS      - Understanding Noise Figure    - LNA Design    - RF Power Amplifiers    - Phase Noise in Oscillators     - RF Mixers    - Frequency Multipliers    - Phase Shifters    - Microstrip, Stripline, and CPW Design    - Automatic Gain Control (AGC) in Receivers    - Bias Circuits for RF Devices    - Smith Chart Theory    - Impedance Matching    - How to measure the impedance of a strip line    - RF System Formulas    - High Impedance Matching with a Network Analyzer    - How to Characterize Surface-Mount RF Devices    - RF / Microwave PCB Design and Layout    - Impedance Matching Networks	HOMEBREW Transceivers and RF Circuits       - Dual - Band Transceiver for 1.3GHz and 2.3GHz     - High Performance HF Transceiver     - 144MHz Band - All Mode Transceiver      - 30m Band - All BJT Transceiver     - 50MHz SSB/CW Transceiver     - Very Low Phase Noise Vackar VFO     - "Dual-Watch" 20m SSB Transceiver     - High Stability, Low Noise, Push-Push VFO         - Homebrew RF Circuit Design Ideas ...more than you can think...
HOMEBREW RF TEST CIRCUITS         - 100MHz Spectrum Analyzer     - Inductance meter with 1nH resolution     - RF Power Meter    - HF Antenna Analyzer (3MHz to 30MHz)    - 2.4GHz ISM Spectrum Analyzer Monitor    - Wobbulator for Filter Characterization	MICROWAVE CIRCUITS       - Multiband low power beacon for:             144MHz, 432MHz, 1296MHz, 2305MHz     - High Frequency LNA Schematics     - High Frequency VCO Design and Schematics
RF SOFTWARE       - RFSim99 - Free RF Design Software     - AppCAD - Free RF Design Tool     - WinSmith - Smith Chart software     - TX-line - Transmission Line Calculator AWR     - 4nec2 - Free 2D and 3D Antenna Software     - AADE - Free RF Filter Design     - Qucs - Free RF Circuit Simulator     - Nuhertz - Free Filter Software     - LTspice - Free Spice Simulator     - Sonnet Lite - Free EM Software     - Feko Lite - Free EM Software     - Ansoft Designer SV - Free RF Circuit Simulator     - TonneSoftware - Free RF Software's     - SMWLink - Free MW Link and Satellite Software     - ADIsimPLL - Free PLL Simulation Software     - ADIsimRF - Free RF System Design Tool     - FilterLab - Free Active Filter Design Software     - CircuitMaker SV - Free Spice Simulator     - Smith v3.10 - Smith Chart and S-Parameter Tool     - Line v1.0 - Transmission Line Calculator     - RF & Microwave - Graphical Design Tools     - Nathan's Free RF Simulation Programs     - Amanogawa - Interactive RF Java Applets     - MMANA-GAL - Free Antenna Modeling     - AN-SOF - Free Antenna Design Software     - DL5SWB - Toroid Ring Core Calculator     - Saturn - Free PCB Design Toolkit	ANTENNA and PROPAGATION          - PIFA - Planar Inverted F Antenna     - Wire Antennas for Ham Radio     - Small Antennas for High Frequencies     - Antenna Types and Antenna Patterns     - Basics of Radio Wave Propagation     - Live Propagation and Solar Data       - Design Ideas for Printed and Microstrip Antennas                         PCB / Layout SOFTWARE       - Express PCB  - Free PCB Design Software     - PCB123  - Free PCB Design Software     - FreePCB - Free PCB Design Software     - Eagle Light - Free PCB Design Software     - KiCad - Free Schematic and PCB Software
ICOM IC-7000 Related Articles     - How to fix the IC-7000 audio noise (hiss)     - How to install a Collins Mechanical filter in IC-7000 transceiver     - UHF to VHF TV Converter for ICOM IC-7000     - 433MHz ATV Transmitter and RX Converter for ICOM IC-7000

 

 

 

 

 

 

 

 

About me                                                                                                Leo Tiger

    QTH - Bucharest  (Old Pictures,  Drawings),  Romania,  Canada                                                                        

    Amateur Radio - Since 1978 - First Class CEPT License, and Canadian Advanced License.

    Interests - Homebrew amateur radio equipment (up to 10GHz)

                    - CW, ATV, SSTV, RTTY, PSK31(65, 125) , Spread Spectrum - ROS , Weak Signal Communication - WSJT

                    - Operating Low Power - QRP 

    "Circuits for Radio Amateurs"  (Montaje pentru Radioamatori)

    University "Politehnica" Bucharest  -  Faculty of Electronics and Telecommunications.         

    

     My Resume/CV (click on the logo for info)

                         

    My Links

• Dubus Magazine - Archive collection 1982 - 1992

• Hewlett-Packard Archive - Radio Frequency and Microwave Seminar Notes

• "Crystal Sets to Sideband" by F. Harris K0IYE - A "must to read" guide to building radios

• The Real Inventor of Morse code - Alfred Vail  "a patient waiter is no loser"

• ARRL - Handbook 2006

• ARRL - Antenna Book 19th Edition

• FUNKAMATEUR Magazine - Archive collection 1995 - 2012

• TEHNIUM - Electronics Magazine - Archive collection 1970 - 2006 (in Romanian)

• Radiocommunications and Amateur Radio Magazine - Archive collection 1990 - 2008 (in Romanian)

• QEX - ARRL Experimenter's Exchange Magazine - Archive collection 1981-2005, 2006-2008, 2010

• QST - Archive collection 1998-2008, 2010

• RSGB - Radio Communications Handbook - 8th Edition, 9th Edition

• Radiotron Designers Handbook (1952) - A "must to read" book for tube circuit designers

• VHF Communications Magazine - Archive collection 1987-1991, 1992-1996

• 73 Amateur Radio Today Magazine - Archive collection 1960 - 2002

• RCA Ham Tips - Archive Collection - 1938 - 1970

• ELEKTOR Electronics Magazine - Archive collection 1994 - 2011

• Radio Transceivers - Schematics and Manuals - Modifications

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• YO3DAN - Personal homepage

• VE7BPO - Amateur Radio Electronic Projects

• YouKits - Create your own Rigs

Romanian Amateur Radio Federation
Radio Amateurs of Canada

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- Links to RF Magazines (click on the logo)



- Links to RF and EM Softwares



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    ...this page is always in construction...                                                              Thanks for your visit...          
                                                                                                                                 
                                                                                                                                           73's from Iulian

   

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