QRP-ARCI FDIM 2020 Buildathon

Price: $50.00
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Picture of QRP-ARCI FDIM 2020 Buildathon


WELL! It is official. Dayton Hamvention 2020 and ARCIs FDIM have BOTH been cancelled due to the virus and public gathering restrictions.
I will be attempting to continue efforts to host the FDIM Buildathon via LIVE streaming it from here in Limerick. Stay tuned for further details as they develop!


I did a live stream Buildathon way back in 2011. We streamed it from the FDIM hotel media room with the help of Steve Fletcher & BATC. It was a while ago so the details are a little fuzzy but if I remember correctly, we had 18 builders in the room and another 40+ builders around the world and another 20+ watchers. It was a last minute thing but we pulled it off. I have 2 months to figure out how to do a better job so I am on the case! Our library here in Limerick has a full video streaming system as part of the inter-library education network. I will be checking in with the town librarian this week to see what we have and what else I need to pull off the event.

So there will be no more Buildathon seats or limit on builders or picking up of kits. All kits will now be sent in time for them to arrive wherever they need to go before the date of the Buildathon. If you are interested in the LIVE streamed event, You had better put your oar in early. The kit has parts that are rather unique and I have to buy them early and in bulk to get the best price....and make sure they get to ME in time to get them into kit form AND get them to you in time!
Rex W1REX


This year we will be building a QRP Glowbug. This kit will be an updated version of the PP2 twin acorn tube design by GM3OXO.



The original GM3OXO schematic from SPRAT #112 can be found below. Yes! If you closely, you might find a couple of errors in the schematic. They were brought up in following issues of SPRAT and I have that under control. Hopefully, the working prototype will be finished sometime this week and I will post new info as it is developed..

I kludged up a box just for illustration so you can see what I am seeing. I could not turn up any 955s in my cavernous junque box but I did find a pair of 9004 acorn diodes with the same heater voltage. I used those in the Kludge pictures. Later I found a single 955 in a piece of Priceless Antique Radio Equipment so I hosed it up to a power supply and took a night shot of that. You can see that it is definitely a QRP Glowbug!

I HAVE COLLECTED UP ENOUGH CIGAR BOXES TO OFFER THEM AS KIT ADD-ONS. i WILL LASER CUT THE PCB OPENING WITH MOUNTING HOLES AND ADDITIONAL HOLES FOR POWER CABLE, KEY JACK AND ANTENNA CONNECTOR.
SEE Laser cut AT2 LUNATIC cigar box for AT2 transmitter

W1REX

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The Registered Builders are:

----------------------------------
ROBERT DOBSON....................WA4FOM
ROBERT DOBSON....................WA4FOM
ROBERT DOBSON....................WA4FOM
RON EIKE............................KA3PSO
DAVE NEW............................N8SBE
SEAN ADKINS.......................KH7RMG
MARTHA AUCHARD.................W0ERI
GARY AUCHARD....................W0MNA
KEVIN ZEMBOWER...................KCSKHA
BILL HULLEY........................K7WXW
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 10

CHARLES BROWN....................W3CHB
DAN REYNOLDS......................KB9JLO
DAVE HUDELSON....................W8HUD
ROBERT BENEDICT....................KD8CGH
CHARLES AGOSTI....................KB8AXA
JOHN KUNZ............................N8MCA
MAX SABO...............................K2MAX
THOMAS FISCHEL....................W0TDH
DAN PRESLEY.........................N7CQR
NICHOLAS APPELMANS.................KI7PTT
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 20

JOHN WILKER......................KB9KJO
ROBERT WOLD......................K6ZLY
DEAN SANDERS......................WB0P
STUART VANSTONE......................M0SGV
RICHARD CHRISTIANSEN................W1TV
MICHAEL SCHILMOELLER................AE7XP
SAM STEPHAN......................AC8EB
MIKE DOOLEY......................N5BZG
JIM BYERS..........................??
KARL HEINZ.......................K5KHK
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 30

WILL RAVENEL...................AI4VE
ROBERT VOSATKA...............WA2I
VIC RATKOWSKI.................KB0TGU
JERRY BROWN....................N4EO
LOU AXEMAN......................N8LA
SAM BURNES......................WY8V
DON PRICE........................KB5VP
JOHNNY MATLOCK................AC0BQ
JOE EISENBERG..................K0NEB
DOUG DEVAN........................??
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 40

BOB DOBSON..........................WA4FOM
BOB DOBSON..........................WA4FOM
BOB DOBSON..........................WA4FOM
STEPHEN SILVERMAN..............KB3SII
STEPHEN HOUSER...................N1SH
JUNICHI NAKAJIMA...........MX6S
JOHN PUTNAM...........................AC9UV
DAVE RAJNAUTH.....................VE3OOI
ERIC GUNTER.........................KC2TXO
JOHN LEONARDELLI...............VE3IPS
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 50

RYAN ZACHRY..........................K5RBZ
NEWTON WHITE........................N4EWT
DAVE HUDELSON....................W8HUD
DAVE HUDELSON....................W8HUD
LAZARO MUNOZ........................??
BURT McCLENDON..............N0YJ
GARY TIBBETTS................AE1TG
DENNIS MARKELL..............N1IMW
DEREK HOOK............................WM1U

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 60


Hope to see you there!
Rex W1REX




Documentation
  • AT2 BOM final FINAL! 4-04
  • 955 Acorn Tube Schematic v1a-2
  • AT2 Power Supply Schematic
  • 955 TX 40m LPF
  • 955 LPF Assy Doc
  • AT2 YouTube Videos
  • FDIM 2020 BUILDATHON update
  • PP2
  • ACORN TUBE 2 TRANSMITTER
  • ACORN TUBE 2 TRANSMITTER underside
  • AT2 POWER SUPPLY
  • ACORN TUBE 2 SOCKETS
  • ACORN TUBE 2 SOCKETS-underside
  • FIL_TOIDS
  • Heathkit AT2 Prototyping Station
  • PARTS ORGANIZED
  • BOARD PACKS
  • TUBE PACKS
  • XTAL + FILTER PACKS