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A bit of mix up there, HF transformers, unless they are for tuned designs, are normally of ferrite material.? They are normally clear-coated, and most often type 43 material unless for the upper end

Thanks but as I said, I’m going to be undergoing & then recovering from chemo and radiation therapy. I don’t want to build anything else, I just want to play. But thanks a bunch for your

Dennis, That is an awesome last name to have when you give Antenna advice. Makes me smile every time I see it. For those who dont know https://en.wikipedia.org/wiki/Beverage_antenna

Thank you all very much! Cheers and until the next time I get stuck on something! I am amazed at how friendly and helpful this group of people is! Cheers and 73 Marko

Yes, since it is a transformer, it is the turns ratio that is most important, though the number of turns can impact the frequency response along with the core material.? I do not have the core

From the HFSignals Website description Coil Details L5, L7 : 12 turns on T30-6 * L1, L2, L3, L4, L11, L12, L13 : 9 turns on T30-6 * L14, L15, L16: 10 turns on T30-6 * L14, L15, L16: 14 turns on T30-6

OR, explore building one by scanning for loop antenna projects at ARRL.com. ?They have published articles on a couple of very good ones over the past year or so. -- Sodypop?

Your determination and this group will get you through it all ?. Looking forward to seeing the results. 73 Joe KD2NFC Sent from Mail for Windows 10 Sent: Wednesday, March 25, 2020 3:05 PM To:

Marko, There is an outstanding video on You Tube by W2AEW Alan Volke on winding trifilar toroids https://youtu.be/a8ViWS61hsU In general, all the videos by him are highly recommended. 73 de k1jbd

Thanks for the words of encouragement, Joe! I'm counting on communities like this to push me when I get stuck :) I'm going on the line that for whatever circuit I don't understand, I will just have to

Thanks for the input, Evan! I saw them on the schematic of the HFSignals device. You think I'll be fine winding 10 trifilar turns on the cicruit? 73 Marko 4O6MAG

Wow what a undertaking for someone who is not even an EE and you seem like you already are familiar. Bravo ?? ?????? Joe KD2NFC

The same basic circuit for the HFSignals uBiTx has 10 trifilar turns on the toroid.? Here is a picture of a number of them on the board: Hope this helps. 73 Evan AC9TU

Hi all! Thanks for having me in this great group of people! I'm a ham for some years now but I don't have much experience in any aspect. Since I'm a medical doctor and not really formally educated in

they need 10,000 vents as of now. we need to be sure of availability of what components we use. I am thinking of using the PC or phone as a backup via the USB port of the Arduino. - f

-Dave-AD0B ..? What keys do you have in stock.. I am interested in shifting a little of your stock to cash for your ventilator project

That and we don't need a sub group! Vince.

Vince Agreed. Now that the ventilator group has formed and is becoming more active, there does seem to be less need to keep the topic active on the BITX20 group. Arv _-_

Raj I looked at sub-groups some time ago relative to a different project. At that time I found some things that I did not like, but maybe I need to take another look in light of the current situation.

I have just a really nice 2m loop made by a ham, so my experience is very limited. For this reason if I were to choose, I would try a design from a company I trust, which is called ParElectronics. Il