Club Presentations

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 PresentedName of PresentationAuthor/Presenter
Jan-08 2020
Propagation by Colors - Use HamCAP to compare the range of various modes
Kai Siwiak, KE4PT
Jul-10-2019Near Vertical Incidence Skywave (NVIS) Propagation with an ARES SlantPresented by "Gil" Gillinghan, W1RG
1-May 2019Hurricane Recovery with NF4A - HamNation #388Introduced by Pete Rimmel, N8PR
Mar-26-2019New Zealand Adventure: Redux 2018 [to GCARA]Kai Siwiak, KE4PT
Mar-06-2019Meteorscatter VHF CommsRandy Shirley, N4QV
Jan-02-2019The Sun and Cycle 25Pete Rimmel, N8PR
Nov-07-2018N4II Dalmation Plantation Antenna Farm DesignEd Callaway, N4II
Sep-05-2018Battery Technology and Amateur RadioTony Gawel, W6TNY
Jul-11-2018FT8 - a new WSJT-X modeRandy Shirley, N4QV
2-May 2018Live Trees Affect Antenna PerformanceKai Siwiak, KE4PT
7-Mar 2018The ARRL RF Safety CommitteeKai Siwiak, KE4PT
Jan-03-2018The CW Advantage and Introducing CW AcademyJim M. Talens, N3JT, and John R. Silva, N3AM
Sep-26-2017Ham Software for Digital Modes and HF Propagation Prediction [rev2:2018-Apr]Kai Siwiak, KE4PT
May-01-2017DXing Software & Planning for a QRP AdventureKai Siwiak, KE4PT
1 Mar-2017ARRL OO ProgramAl Flapan, KN4FA
Jan-24-2017Multi-band Antenna Strategies for EmComm - to GCARAKai Siwiak, KE4PT
Jan-04-2017The eQSL System and AwardsDave Morris, N9UF
Nov-02-2016To Balun or not to BalunRich, W4RQ & Kai, KE4PT
Nov-2016QRP-Quarterly: Ionospherica-8 - Antenna patterns with a calculatorKai Siwiak, KE4PT
Sep-07-20163-D Printing for Amateur RadioDon Drennon, N4TZH
Jul-06-2016Lightning! Part-2 protect your radio equipmentJohn Stucka, N3JM
May-04-2016Intrepid DX South Sandwich and South Georgia Expeditions, slidesNorm Alexander, W4QN
May-02-2016ANTENNAS – Wires, Verticals and Arrays - presented to DCARCPete Rimmel, N8PR
Apr-2016QRP-Quarterly: Ionospherica-VII - Propagation over Rough EarthKai Siwiak, KE4PT
Mar-02-2016DX aides - Past and PresentNorm Alexander, W4QN
Feb-2016QST: Radio Wave Propagation-How Waves Attenuate with DistanceKai Siwiak, KE4PT
Jan-06-2016Lightning!John Stucka, N3JM
Nov-04-2015Video report, Ham Radio Now-2015: Dayton DX Forum Part 3 - K1N NavassaPete Rimmel, N8PR
Nov-04-2015FT5ZM DXpedition Pileup - 1/14 Video by Pete, N8PRPete Rimmel, N8PR
Oct-27-2015Propagation - It's not always FreeSpace [to GCARA]Kai Siwiak, KE4PT
Oct-2015QRP-Quarterly: Ionospherica-VI - Propagation from the Ground UpKai Siwiak, KE4PT
Oct-2015Using Digital Modes on the Fly: Checklists [to QCWA and DCARC]Kai Siwiak, KE4PT
Sep-02-2015ZF2EM DXpedition reportPete Rimmel, N8PR
Sep-02-2015OZ1AA-NA-bike-trek reportPete Rimmel, N8PR
Jul-08-2015Landline and Radio Telegraphy History and Exhibit.Robert Feeny, KG4UGG
May-26-2015Amateur Digital Modes the Easy Way [to GCARA]Kai Siwiak, KE4PT
May-06-2015Update: “Amateur Radio at the National Hurricane Center WX4NHC”Julio Ripoll, WD4R
Apr-2015QRP-Quarterly: Ionospherica-V - Urban PropagationKai Siwiak, KE4PT
Mar-09-2015Grayline Propagation, or FL– Cocos Keeling on 80m - WWROF webinarEd Callaway, N4II
Mar-05-2015DXlab Logging Software and Report on CQ DX MarathonNorm Alexander, W4QN
Jan-30-2015JT65: DXing with Joe Taylor - SFDXA Forum, Miami HamfestPete Rimmel, N8PR
Jan-07-2015A New Zealand QRP AdventureKai Siwiak, KE4PT
Jan-07-2015W1AW/4 at N8PR: Station & RTTY operationsPete Rimmel, N8PR
Oct-2014QRP-Quarterly: Ionospherica-IV - loop near fieldsKai Siwiak, KE4PT
Sep-03-2014ARRL Centennial Report andPete Rimmel, N8PR
WRTC report
Sep-03-20142005-2006 Operation from IraqCarlos Vega, N4THW
Sept-2014First ever EME operation from US Virgin Islands - QST September 2014Pete Rimmel, N8PR, and Bill Druzilla, NZ5N
Jul-15-2014Broward County ARES/RACES meeting; Improvised Antennas for EmergenciesKai Siwiak, KE4PT
Jul-09-2014Out of this World Antenna MeasurementsKai Siwiak, KE4PT
9-July 2014Scouting and Ham RadioShelly Weil, K2BS
9-July 2014Status of Trans-Atlantic 2M QuestSebastian Acosta, W4AS
May-07-2014Hi Performance RX Antenna for a Small LotCarlos DaSilva, N4IS
Apr-2014QRP-Quarterly: Ionospherica-III - Hiker dipoleKai Siwiak, KE4PT
Mar-05-2014W4DN's Photo tour of 2014 Miami HamboreeDon Drennon, N4TZH
Mar-05-2014ARRL at 100 - A century of Ham Radio, VideoARRL
Feb-01-2014WRTC-2014 presentation: Miami HamboreeDan Street, K1TO
Jan-08-2014Solar magnetism, wind, sunspots, AurorasPete Rimmel, N8PR
Jan-08-2014Two months of solar activityRich Rosen, K2RR
Dec-2013QST: How Much “Punch” Can You Get from Different Modes?Kai Siwiak, KE4PT, and Bruce Pontius, N0ADL
Nov-08-2013WSJT-X & JT-ALERTSebastian Acosta, W4AS
Nov-08-2013Remote Base Operation: RemoteShack John Troy, KI4YUM
Oct-2013QRP-Quarterly: Ionospherica-II - Wave-interferenceKai Siwiak, KE4PT
Sep-04-201380m Grayline Propagation:  FL– Cocos KeelingEd Callaway, N4II
Jul-10-2013Inside: Decommissioned VOA, Delano CARich Rosen, K2RR
May-01-2013Antenna Support StructuresMickey Baker, N4MB
Apr-2013QRP-Quarterly: Ionospherica - The Big Solar PictureKai Siwiak, KE4PT
Mar-06-2013Running Your First CQ DXMike Raskin, W4UM
Jan-09-2013Easy Digi Easy RTTYKai Siwiak, KE4PT
Nov-07-2012Video: DXpeditions of the year 1993-2007Bob Allphin, K4UEE
Jul-11-2012Photos and news: Dayton 2012 HamfestDon Drennon, N4TZH
Jul-11-2012Experiences of ARRL and W1AW visitPete Rimmel, N8PR
Jul-2012QRP-Quarterly: Loop antenna efficiencyKai, KE4PT, and Amir, K9CHP
May-02-2012Video: Virtual tour of ARRL HQDavid Fowler, K4DLF
Apr-2012QRP-Quarterly: KE4PT Off-Center-End-Fed dipole and DX go bag station also: OCEF ADDENDUMKai Siwiak, KE4PT
Mar-07-2012Antenna Modeling comparison of EZNEC & NECWIN+Norm Alexander, W4QN
Jan-04-2012Software defined radios.Sebastian Acosta, W4AS
Nov-02-2011Tower Safety, Coax & RF Fittings, Network AnalyzersMark Lavallee, AC4UV
Oct-08-2011Dinner and Presentation on DX his activitiesVladimir Bykov, UA4WHX
Sep-07-20111. “Amateur Radio at the National Hurricane Center WX4NHC”Julio Ripoll, WD4R
2. “WX4NHC Haiti Earthquake mission”
Jul-12-2011Lightning Strike and EMP at KE4PTKai Siwiak, KE4PT
Jul-06-2011Presentation on Dayton 2011 HamfestSteve Romagni, W4DTA
May-04-2011The Ins and Out of eQSL.ccDave Morris, N9UF
Mar-02-2011Working the Easy SatsBill Rafus, KD4FRB
Mar-02-2011Working DX from SatellitesBill Dzurilla, NZ5N
Nov-2010Enjoy DXing with a Modest StationKai Siwiak, KE4PT
May-05-2004Making a Low Band (160 m) LoopPete Rimmel, N8PR