GM3SEK's Amateur Radio Technical Notebook


GS35b	RF Power Amplifiers The Triode Board PC board for Triode PA control and protection Download the complete *Triode Board* Instruction Manual The Tetrode Boards PC boards for Tetrode PA control and protection Download the complete *Tetrode Boards* Instruction Manual Tried and tested solutions We have supplied over 1800 Boards and kits in the past 14 years to customers all around the world. Order online, direct from the designer Power Amplifier Design and Operation Clean Signals How to set up your speech processor Intermodulation distortion Effects of screen supply stabilisation Transistor PA bias circuits Why most bipolar bias circuits cause non-linearity Tube PA Design and Construction High Voltage power supplies Safety by design PSU Designer software Accurate, easy to use, and highly recommended! Pi/Pi-L network design/analysis spreadsheet NETCALC - an RF network calculator Triode amplifier design program B lower performance curves Estimate by Excel spreadsheet Amplifiers using Russian tubes G2DAF Amplifier The original articles (for reference only - not recommended for use today) Sequencing and Relay Switching PTT interface and speed-up circuit for RF relays Simple TX/RX sequencer RFI Filters VHF/UHF harmonic notch filters FM and UHF-TV interference filters

Sad to say, The VHF/UHF DX Book is no longer available If you're still looking for a copy, set a permanent 'Watch' for the title on ebay.co.uk Corrections and updates	VHF/UHF DX VHF/UHF Long Yagi Workshop VE7BQH Yagi Performance Tables The 'world standard' benchmarks for Yagi performance on 50MHz and 144MHz. 432MHz data - more to follow. Stacking Yagis for the Same or Different Bands DUBUS magazine and DUBUS-Technik books DUBUS Archives 1982-1992 Moonbounce Polarization and One-way EME Propagation More EME Contacts with Polarization Rotation W6/PA0ZN's EME/Radio Astronomy/SETI site - *includes 432MHz and Above EME Newsletter* Archives** SM5BSZ's technical pages

	Thanks to everyone for reading and contributing to this column since 1993. There will be no more monthly 'In Practice' columns, but these web pages will continue to be updated. The 'In Practice' pages More information about ongoing topics Cost-effective Ferrite Chokes and Baluns Latest version of the extended article. PowerPoint show from RSGB Convention, 9 October 2010 Best of 'In Practice' on the web Articles and resources of long-term interest Cumulative Index, 1993 - 2010 All 207 monthly columns, indexed by topic UK Component and Tool Suppliers Where to buy, how to order - still active, please keep sending your recommendations

Last updated 1 April, 2013
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GS35b photo by courtesy of PE1OGF