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Thank you all for the replies! Sorry for being quiet. Yes, I contacted Roelof a few days ago. He is building one of his MiniWhip designs for me right now (he has 3 versions right now!). His pricing

Hi Chin-leong Lim, There is nothing wrong with the suggested Laudet's model. Besides, other sources support the same model for unshielded SMA. You may use Levkov's model but it represents

Original PA0RDT Mini-Whips are the way to go!? Been using them for years. 73, Bill, WA2DVUCape May, NJ

Simon, You can buy an original Mini-Whip from PA0RDT Roelof Bakker himself. Contact information here: https://www.qrz.com/db/PA0RDT Johan SM6LKM rfsam wrote:

If that doesn't work, try roelofndb@... Tony AD0VC ________________________________ Sent: Monday, September 23, 2024 12:54 PM To: [email protected] <[email protected]> Subject: Re:

Hi Simon, This may be worth trying also: roelofndb (at) delta.nl Regards, Jari [email protected]> wrote:

Hi Gary and Martin and group, Gary - I am glad to try and answer any questions on your Shared Apex Loop project. Martin - thanks for the reference to the Shared Apex Group. Also, just would like to

Hi Chin-leong Lim, Understood about the switch, but I think the location of the balun is causing problems. Either build a separate balun, or obtain a

Hi Martin, There is another compelling reason for my not choosing the balun before dummy configuration, but I have forgotten all about it. I want to be able to re-use the balun for P1dB & OIP3

Hi Raphael, Actually, the low pass was the first topology I considered, if only for the reason it agrees with Loudet's model ( https://sidstation.loudet.org/antenna-theory-en.xhtml ) , which will then

Thanks for the reply, everything seems to be working fine now. As you have suggested I put two 33 Ohm resistors in series with the collectors of the two BFUs and now amplifier is regularly working.

Good point Keith, English was not one of my better subjects at school, actually most of them fell into that category...

The 'or' is inclusive not exclusive. Keith.

Art or science ? I'd say it's both. You can design something using scientific principles, but there are many ways of implementing it, which is where the "art" kicks in. Like good art, you

OK.... I can't resist replying to the philosophical question: Creativity is art. Engineering is applying that art while still being faithful to the hard science of solving the problem. Dave -

Hi Simon, You brought up an interesting point that engineering is not an art ( at least in electronics ). I would say it is currently an art when you deal with designs of lumped elements on your

Martin, You raised a good question how to motivate people in engineering profession who hits the door of your department. My question to them always was the same - what you can bring new to us

Hi Martin To answer your question.. its an art. I, me Simon know no where near as much theory as most on here do… yet I can look at an antenna ( say a Marconi T for 160m) and know within a turn

Yeh well, excuse my digression. I used to manage a department full of different project teams, so this sort of thing interests me. How to motivate people, and at the same time, get stuff out of the

Chin-leong LIm, A presence of writer's tunnel vision ? C'mon, don't be silly with that! You made my morning for a good laughing that positively effects the health. There I am on same page with