Schedule for FDIM 2022

All times are Eastern Daylight Time (UTC -4)

Wednesday May 18 - Registration from 7:30PM to 9:30PM - Challenger Room

Thursday May 19 - Registration starts at 7:30AM Outside the Ballroom

Make sure you pick up your FDIM badge from the registration table

Thursday May 19 - Seminars

Beginning at 9AM and breaking at 10:45AM

Restarting at 11:00AM 

Lunch is from 12:30PM to 1:30PM

Restarting at 1:30PM and ending at 3:00PM

7PM to 8PM - Vendor registration and setup - Main Ballroom, no public access

8PM to 10PM - Vendor Night

Friday May 20th

3PM to 8PM - Buildathon with Rex Harper W1REX - Challenger Discovery Room, you must be pre-registered. 

7PM to 8PM - Club Registration and setup in the Main Ballroom, no public access

7PM to 8PM - Show and Tell Homebrew Contest Registration and setup in Ballroom

8PM to 9PM - Homebrew Contest Judging in the Ballroom

8PM to 10PM - Radio Show and Tell in the Ballroom

8PM to 10PM - 2N2222 Challenge

8PM to 10Pm - Club Night in the Ballroom

Saturday May 21st 

7PM - Awards Ceremony and Grand Banquet in Ballroom 

9PM - Post Banquet Chat Sessions, bring your QSL cards to trade

Sunday May 22nd 

Hamvention and head back home

If you have any questions please let us know !

FDIM 2022 Speakers List

Four Days In May (FDIM) - the biggest and best QRP event in the World !

FDIM will be held at the Holiday Inn Fairborn Ohio.

MAY 19-22 2022 

Jack Purdum and Al Peter - The Evolution of a CW Decoder
Grayson Evans - The Art and Science of Building Thermatron Amplifiers
Hans Summers - Designing a modern digi-mode transceiver
Ashhar Farhan - "Going Analog, again"
Adam Kimmerly - Pint-sized Portable - The development of the "Choking Hazard"
Lowell Kolb, Keith Whites - Teaching Electronics with the NorCal 40A
Steve White NU0P - The Joy of Building
Lunch will be made available by the hotel for $16.00, make sure you let Norm know if you are interested. 

Looks like a great lineup of presenters!  Don't forget to get registered. 


FDIM Registration 2022

Four Days In May (FDIM) - the biggest and best QRP event in the World !

Main Door Prize:  Icom IC-705 Transceiver! 

Raffle Prize: Elecraft KX2 with Autotuner and Key!

Streaming Attendees are not eligible for door prizes. 

FDIM will be held at the same location as last year, Holiday Inn Fairborn.

MAY 19-22 2022 

Planning to Stay at Holiday Inn?

Special Instructions: Please check the
nights you wish to stay. Check the type of Bed/s. We will forward this
information to the Hotel and they will assign a confirmation number.
Once this is done, you will receive a note with your confirmation number
(generally 7 days). You should contact the hotel with your credit card
information within 7 days of receiving the confirmation number. Rooms
not confirmed with credit card will be canceled and made available for

ONLY registrations WITH Seminar or Banquet registration will be
processed for the hotels.

A list of area hotels here. Curtesy of Greene County C&V Bureau.

Registration is open long before we have made final plans for programs
and other activities at FDIM 2022. Details will be available on the web site as soon as they are completed.

Registered Attendees

If you have any questions or concerns, please send me an email.

Lunch will be provided by the hotel on Thursday for $16.00 per person, let Norm know if you are interested. 

Norm Schklar - WA4ZXV
Questions, contact This email address is being protected from spambots. You need JavaScript enabled to view it.


FDIM 2022 Homebrew Contest

Friday 20 May 2022
8PM to 10PM

FDIM 2022 - Homebrew Contest - Show and Tell

As in the past, we intend to allow entries in the Homebrew Contest to be displayed in the Ballroom on Club Night, Friday night, May 15, between 8PM and 10 PM. To enter an item in the contest and insure that it is part of the voting (on Friday night), you must register your item on Friday night between 7 PM and 8 PM. A registration table will be outside the main Ballroom at that time on both nights.

Read More:

Vendor Night 2022

Vendor table at FDIM

Thursday 19 May 2020
8.00pm - 10.00pm

Vendor Night is free of charge !

Vendors and QRP clubs from around the World will be selling kits, components, antennas and all kinds of goodies.

This is a great place to buy. The vendors have time to chat and you can take your purchases back to the hotel room. For customers, doors open at 8.00pm

Vendors at FDIM have included -

  • Brad Thompson, AA1IP
  • Elecraft
  • Dan Romanchik, KB6NU
  • DX Engineering
  • Four State QRP Group (4SQRP)
  • Kanga UK
  • Kanga USA
  • LNR Precision
  • Pro Audio Engineering
  • QRPme

Book a Table

FDIM Buildathon 2022

Friday 20 May 2022

FDIM 2022 - Buildathon by Rex Harper W1REX

This year we will be building a TTL Transmitter.  This is an update to my original TTL Project. 

As usual, the Buildathon room only holds between 40 and 50 builders so there is a limit to the number of seats available. I will start the list and see where that goes...the cost is $30.00 (USD)

Register for Buildathon here! 


FDIM 2022 2N2222 Power Challenge

Announcing - the FDIM 2022 2N2222 POWER CHALLENGE!

We QRP enthusiasts have developed a great reputation for doing more with less.  Whether that is trying to break a record for mile per watt in a QSO, or designing a transceiver with fewest components, the design skills of our colleagues is undisputable.  QRPARCI is presenting our community with the an opportunity to show off these QRP design skills with the FDIM2022 2N2222 POWER CHALLENGE!  The challenge is simple:  Design and demonstrate a crystal-controlled 40M PA to make the highest sustained power for a period of one minute using only two 2N2222 transistors.  This event will take place at 8:00 PM Friday, May 20 during FDIM, and the winner recognized at the QRPARCI Banquet on Saturday, May 21.