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I forgot to mention that I also carry a EFRW in my little bag,that of course is more efficient than almost short loaded vertical. Mine is Adam’s K6ARK clever design that incorporates a 9:1 balun

It’s a matter of trade offs that each operator is willing to make. No doubt that other larger antennas can be more efficient,but how much are you willing to pack around? Last summer I made a trip to

WOW! Bingo, the treasured missing piece of information. I had all but given up but now having a fighting chance to bring this thing to life. THANK YOU! Other things on the bench for now but when I

I don't think anyone can deny that an AX1 is a very convenient antenna, but isn't the elephant in the room still efficiency? Looking at Doug's antenna, judging from the whip size, I'd guess

Actually I did build one before I had a license for someone.? Didn't retain the manual as it was his.? He is now SK by over a decade. And it seems someone found that missing peice, the arts

The original article is available on groups.io qrptech files /g/qrptech/files/Dave%20Benson%27s%20NE%204040/Single-Board%20Superhet%20QRP%20%28QST%2011-1994%29.pdf NEQRP 72 Magazine

Hi Dan What you say about your backpack is true. I’m a hiker and portable operator so keeping size and weight down is essential . The more bits you carry the longer it takes to put together and

? ?Thanks Doug for the info. I’ve been an active ham doing portable CW/QRP operating since the mid 1970’s. Back then I was hauling around my TenTec 509 with 2 6V lantern batteries and a fan

This is the closest I have come, as this is the same board I have. Problem is, while many components are pretty obvious, what are the values of the 21 resistors and numerous capacitors shown in their

I’m not intending to be obnoxious or anything, but isn’t there anyone on the list who actually built one of these kits back in the day and can just take a picture of the assembled

With the schematic (in the QST article) and the actual board in hand I think you should be able to reverse your way into a parts placement diagram. Especially if you go stage-by-stage, using

Reply from Dave Benson, dead in the water unless someone actually still has those parts placement drawings. Hi Richard- Unfortunately, what you have there is a drink coaster. My documents were

Are there plans online for the homebrew antenna? Thx John KY4WW ________________________________ Sent: Monday, March 24, 2025 10:48 AM To: [email protected] <[email protected]> Subject:

I have done so, hopefully he can offer some assistance. I never like to give up on a project. Just not in my DNA Hi Hi. 73, Richard AG5M

Dan, the small form factor is part of the problem.? ?It's diameter is half the one of the homebrew version.? The larger the coil diameter,? the greater the Q, which is directly related to the

While the 40+ is the same schematic the board layout is very different. Check with Dave Benson K1SWL he is in QRZ. -- Allison -------------------------- Please, private email goes to bit bucket

Phil, Here is where a nanoVNA or an antenna analyzer will help. Look at the antenna with either and see where it resonates and then the fun begins. If it resonates where you want there is probably

Doug-I’ve built a number short loaded verticals including your design a few years ago at Pacificon. And it works fine. But AX1 is a much smaller form factor and is very ruggedly built. No home brew

Actually we agree that a counterpoise is necessary for the antenna to function. What I’m mystified by is why anyone would attempt to operate it without the counterpoise. The AX1 is shipped with a

Absolutely true. Dave?? AB7E