FDIM 2017 Buildathon

Rex Harper, W1REX

Friday 19 May 2017
4.00pm - 8.00pm

Once again THANKS to Rex Harper W1REX for hosting the FDIM Buildathon !

Due to all the latest interest in FT-243 crystals and crystal grinding, I have decided to update the workshop that was presented by myself, W1REX, Darell Brehm, WA4OPY, and Ron Hale, AC5UR at the Ozarkcon 2006 QRP convention. We held a hands on workshop where everyone ripped open an out of band surplus FT243 crystal, removed the quartz blank and re-ground it to a QRP friendly frequency. That workshop was focused on the crystal grinding. The FDIM 2017 Buildathon will add a kit to the process. we will first build an integrated crystal oscillator and frequency counter, calibrate it and then grind an FT-243 crystal from somewhere in the 6.x Mhz region to a desired 40m frequency. I will provide a genuine factory OLD FT-243 crystal within grinding distance of the 40m band as part of the Buildathon package.

As usual, the Buildathon will also include a time out for a complementary pizza party so that builders won't miss dinner while we build. Directly after the Buildathon, the now sated builders only need to take a short walk around the lobby in order to enjoy the FDIM Club night being held in the adjacent ballroom.

We will be using the *USUAL* format of the Buildathon so we can register 35 builders.... Don't wait until the last minute to sign up! After that, you will just have to resort to picking up your kit at the FDIM Buildathon and taking it home.....


Registration for the Buildathon is completed with Rex.  


Check the FDIM Section of the web site for more FDIM info. http://qrparci.org/fdim


QRP Quarterly - January 2017

The latest QRP Quarterly (January2017) has been mailed to subscribers

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We produce a professional quality magazine (QRP Quarterly), organise an annual conference at Dayton ('Four Days In May' or FDIM), and sponsor various QRP contests and awards.



QRP Quarterly - Digital PDF

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QRP Quarterly

QRP Quarterly - January 2017

QRP Quarterly - January 2017

Technical Articles

5 Idea Exchange—Mike Czuhajewski—WA8MCQ

Practical Propagation for the Everyday Ham—N2CX Finger Dimples from WalMart—W3TS

None Simpler Portable Antenna Insulators—NM5S Homebrewer’s Guide To Recycling—KK6FUT Whisper Sidetone—Shhhh! —ND6T

Hammond Plastic Project Boxes—VE3IPS Variations on PCB Method—KC7CJ

Portable Tent Pole Vertical Antenna—KK6FUT Alternative to Etching Muppet Boards—W5USJ

16 630 Meters for the QRPer—Paul Signorelli—WA2XRM (WØRW)

20 The QEC Antenna: A New Design—Akira Motohashi—JP1QEC

23 How Low Can You Go?—Robert Rosier—K4OCE

26 WSPR and the Raspberry Pi—Scotty Cowling—WA2DFI

30 Troubleshooting and Repair Techniques—Mike Bryce—WB8VGE

38 Antennas 101: A Look Back 25+ Years—Gary Breed—K9AY

The Joy of QRP

17 Clubs Make CW More Fun—Dan Romanchik—KB6NU

24 Pedestrian Mobile with the KX2 as a Hand-Held Rig—Greg Lane—N4KGL

The World of QRP ARCI

2 QRP Quarterly Advertising Information

3 Editorial—Mitch Gill—NA7US


18 FDIM 2017 Announcement

40 New or Renewal Membership Application


40 QRP ARCI Staff and Directors  

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