SFDXA authors and presenters are pleased to make their many presentations and publications available to the Amateur Radio community.
Enjoy them, but if you use them publicly, please cite the Date, Title, Author, Call Sign, and The SFDXA.
Our authors have also posted their articles that appeared in QST, QEX, QRP-Quarterly, CQ, and other journals.
Those articles are subject to the respective copyrights, please use accordingly.
Thanks and 73!
| Date Presented | Name of Presentation | Author/Presenter |
|---|---|---|
| Jan-08 2020 | Propagation by Colors - Use HamCAP to compare the range of various modes | Kai Siwiak, KE4PT |
| Jul-10-2019 | Near Vertical Incidence Skywave (NVIS) Propagation with an ARES Slant | Presented by "Gil" Gillinghan, W1RG |
| 1-May 2019 | Hurricane Recovery with NF4A - HamNation #388 | Introduced by Pete Rimmel, N8PR |
| Mar-26-2019 | New Zealand Adventure: Redux 2018 [to GCARA] | Kai Siwiak, KE4PT |
| Mar-06-2019 | Meteorscatter VHF Comms | Randy Shirley, N4QV |
| Jan-02-2019 | The Sun and Cycle 25 | Pete Rimmel, N8PR |
| Nov-07-2018 | N4II Dalmation Plantation Antenna Farm Design | Ed Callaway, N4II |
| Sep-05-2018 | Battery Technology and Amateur Radio | Tony Gawel, W6TNY |
| Jul-11-2018 | FT8 - a new WSJT-X mode | Randy Shirley, N4QV |
| 2-May 2018 | Live Trees Affect Antenna Performance | Kai Siwiak, KE4PT |
| 7-Mar 2018 | The ARRL RF Safety Committee | Kai Siwiak, KE4PT |
| Jan-03-2018 | The CW Advantage and Introducing CW Academy | Jim M. Talens, N3JT, and John R. Silva, N3AM |
| Sep-26-2017 | Ham Software for Digital Modes and HF Propagation Prediction [rev2:2018-Apr] | Kai Siwiak, KE4PT |
| May-01-2017 | DXing Software & Planning for a QRP Adventure | Kai Siwiak, KE4PT |
| 1 Mar-2017 | ARRL OO Program | Al Flapan, KN4FA |
| Jan-24-2017 | Multi-band Antenna Strategies for EmComm - to GCARA | Kai Siwiak, KE4PT |
| Jan-04-2017 | The eQSL System and Awards | Dave Morris, N9UF |
| Nov-02-2016 | To Balun or not to Balun | Rich, W4RQ & Kai, KE4PT |
| Nov-2016 | QRP-Quarterly: Ionospherica-8 - Antenna patterns with a calculator | Kai Siwiak, KE4PT |
| Sep-07-2016 | 3-D Printing for Amateur Radio | Don Drennon, N4TZH |
| Jul-06-2016 | Lightning! Part-2 protect your radio equipment | John Stucka, N3JM |
| May-04-2016 | Intrepid DX South Sandwich and South Georgia Expeditions, slides | Norm Alexander, W4QN |
| May-02-2016 | ANTENNAS – Wires, Verticals and Arrays - presented to DCARC | Pete Rimmel, N8PR |
| Apr-2016 | QRP-Quarterly: Ionospherica-VII - Propagation over Rough Earth | Kai Siwiak, KE4PT |
| Mar-02-2016 | DX aides - Past and Present | Norm Alexander, W4QN |
| Feb-2016 | QST: Radio Wave Propagation-How Waves Attenuate with Distance | Kai Siwiak, KE4PT |
| Jan-06-2016 | Lightning! | John Stucka, N3JM |
| Nov-04-2015 | Video report, Ham Radio Now-2015: Dayton DX Forum Part 3 - K1N Navassa | Pete Rimmel, N8PR |
| Nov-04-2015 | FT5ZM DXpedition Pileup - 1/14 Video by Pete, N8PR | Pete Rimmel, N8PR |
| Oct-27-2015 | Propagation - It's not always FreeSpace [to GCARA] | Kai Siwiak, KE4PT |
| Oct-2015 | QRP-Quarterly: Ionospherica-VI - Propagation from the Ground Up | Kai Siwiak, KE4PT |
| Oct-2015 | Using Digital Modes on the Fly: Checklists [to QCWA and DCARC] | Kai Siwiak, KE4PT |
| Sep-02-2015 | ZF2EM DXpedition report | Pete Rimmel, N8PR |
| Sep-02-2015 | OZ1AA-NA-bike-trek report | Pete Rimmel, N8PR |
| Jul-08-2015 | Landline and Radio Telegraphy History and Exhibit. | Robert Feeny, KG4UGG |
| May-26-2015 | Amateur Digital Modes the Easy Way [to GCARA] | Kai Siwiak, KE4PT |
| May-06-2015 | Update: “Amateur Radio at the National Hurricane Center WX4NHC” | Julio Ripoll, WD4R |
| Apr-2015 | QRP-Quarterly: Ionospherica-V - Urban Propagation | Kai Siwiak, KE4PT |
| Mar-09-2015 | Grayline Propagation, or FL– Cocos Keeling on 80m - WWROF webinar | Ed Callaway, N4II |
| Mar-05-2015 | DXlab Logging Software and Report on CQ DX Marathon | Norm Alexander, W4QN |
| Jan-30-2015 | JT65: DXing with Joe Taylor - SFDXA Forum, Miami Hamfest | Pete Rimmel, N8PR |
| Jan-07-2015 | A New Zealand QRP Adventure | Kai Siwiak, KE4PT |
| Jan-07-2015 | W1AW/4 at N8PR: Station & RTTY operations | Pete Rimmel, N8PR |
| Oct-2014 | QRP-Quarterly: Ionospherica-IV - loop near fields | Kai Siwiak, KE4PT |
| Sep-03-2014 | ARRL Centennial Report and | Pete Rimmel, N8PR |
| WRTC report | ||
| Sep-03-2014 | 2005-2006 Operation from Iraq | Carlos Vega, N4THW |
| Sept-2014 | First ever EME operation from US Virgin Islands - QST September 2014 | Pete Rimmel, N8PR, and Bill Druzilla, NZ5N |
| Jul-15-2014 | Broward County ARES/RACES meeting; Improvised Antennas for Emergencies | Kai Siwiak, KE4PT |
| Jul-09-2014 | Out of this World Antenna Measurements | Kai Siwiak, KE4PT |
| 9-July 2014 | Scouting and Ham Radio | Shelly Weil, K2BS |
| 9-July 2014 | Status of Trans-Atlantic 2M Quest | Sebastian Acosta, W4AS |
| May-07-2014 | Hi Performance RX Antenna for a Small Lot | Carlos DaSilva, N4IS |
| Apr-2014 | QRP-Quarterly: Ionospherica-III - Hiker dipole | Kai Siwiak, KE4PT |
| Mar-05-2014 | W4DN's Photo tour of 2014 Miami Hamboree | Don Drennon, N4TZH |
| Mar-05-2014 | ARRL at 100 - A century of Ham Radio, Video | ARRL |
| Feb-01-2014 | WRTC-2014 presentation: Miami Hamboree | Dan Street, K1TO |
| Jan-08-2014 | Solar magnetism, wind, sunspots, Auroras | Pete Rimmel, N8PR |
| Jan-08-2014 | Two months of solar activity | Rich Rosen, K2RR |
| Dec-2013 | QST: How Much “Punch” Can You Get from Different Modes? | Kai Siwiak, KE4PT, and Bruce Pontius, N0ADL |
| Nov-08-2013 | WSJT-X & JT-ALERT | Sebastian Acosta, W4AS |
| Nov-08-2013 | Remote Base Operation: RemoteShack | John Troy, KI4YUM |
| Oct-2013 | QRP-Quarterly: Ionospherica-II - Wave-interference | Kai Siwiak, KE4PT |
| Sep-04-2013 | 80m Grayline Propagation: FL– Cocos Keeling | Ed Callaway, N4II |
| Jul-10-2013 | Inside: Decommissioned VOA, Delano CA | Rich Rosen, K2RR |
| May-01-2013 | Antenna Support Structures | Mickey Baker, N4MB |
| Apr-2013 | QRP-Quarterly: Ionospherica - The Big Solar Picture | Kai Siwiak, KE4PT |
| Mar-06-2013 | Running Your First CQ DX | Mike Raskin, W4UM |
| Jan-09-2013 | Easy Digi Easy RTTY | Kai Siwiak, KE4PT |
| Nov-07-2012 | Video: DXpeditions of the year 1993-2007 | Bob Allphin, K4UEE |
| Jul-11-2012 | Photos and news: Dayton 2012 Hamfest | Don Drennon, N4TZH |
| Jul-11-2012 | Experiences of ARRL and W1AW visit | Pete Rimmel, N8PR |
| Jul-2012 | QRP-Quarterly: Loop antenna efficiency | Kai, KE4PT, and Amir, K9CHP |
| May-02-2012 | Video: Virtual tour of ARRL HQ | David Fowler, K4DLF |
| Apr-2012 | QRP-Quarterly: KE4PT Off-Center-End-Fed dipole and DX go bag station also: OCEF ADDENDUM | Kai Siwiak, KE4PT |
| Mar-07-2012 | Antenna Modeling comparison of EZNEC & NECWIN+ | Norm Alexander, W4QN |
| Jan-04-2012 | Software defined radios. | Sebastian Acosta, W4AS |
| Nov-02-2011 | Tower Safety, Coax & RF Fittings, Network Analyzers | Mark Lavallee, AC4UV |
| Oct-08-2011 | Dinner and Presentation on DX his activities | Vladimir Bykov, UA4WHX |
| Sep-07-2011 | 1. “Amateur Radio at the National Hurricane Center WX4NHC” | Julio Ripoll, WD4R |
| 2. “WX4NHC Haiti Earthquake mission” | ||
| Jul-12-2011 | Lightning Strike and EMP at KE4PT | Kai Siwiak, KE4PT |
| Jul-06-2011 | Presentation on Dayton 2011 Hamfest | Steve Romagni, W4DTA |
| May-04-2011 | The Ins and Out of eQSL.cc | Dave Morris, N9UF |
| Mar-02-2011 | Working the Easy Sats | Bill Rafus, KD4FRB |
| Mar-02-2011 | Working DX from Satellites | Bill Dzurilla, NZ5N |
| Nov-2010 | Enjoy DXing with a Modest Station | Kai Siwiak, KE4PT |
| May-05-2004 | Making a Low Band (160 m) Loop | Pete Rimmel, N8PR |