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That's a great idea :) If you don't need as fast of response in your oven, maybe you could leave the envelope on. The oven light might be able to do double duty as a light when you open the door, and

Shirley, given that we are looking for a wide bandwidth, we wouldn't need much of matching. I just took the first eight off the smd strip and they worked!

I think we are addressing multiple topics now. The paradigm of the small loop versus a longer length of wire as a receive only antenna. For the latter wire diameter less critical. Simian don't be

I was eyeing those 40 MHz fundamental mode crystals that you can buy from Digi-Key and Mouser. The prices are reasonable, under 30 cents. Looks like you've now done some of the work to try them out. I

David? At 11 MHz, it is difficult to build a 10 khz filter without desoldering all the caps and the matching transformers. However, if you are okay with the 3 Khz bandwidth, then it can be used

Couldn't sBITX do a 10kHz wide window with a relatively unmodified uBITX without the 27MHz or 40MHz IF mods?

Perhaps a README.md file like this would be good for the repository: # sBITX -- An open source SDR that you can hack See these resources for more information: *

I am reassigning pins to simplify the pcb layout. So, please hold on for a week (until I get my pcbs) before starting to make the sbitx. I also managed a 30 khz wide filter on 40 mhz (whoa!) Which

The https://www.youtube.com/watch?v=9mFxyS6_2t8 video, the https://tinyurl.com/5xn7v22a link to the googledoc presentation materials and the https://github.com/afarhan/sbitx repository, with the code

Interesting. Most metals have about the same temperature coefficient of resistivity as tungston:

Hi Gerald I have built a somewhat similar loop with 2.6m of half inch heliax and a very small capacitor (5pf to 40pf), aiming the top bands. The problem is that tuning is very, very sensitive in that

Yes, that is one of my favorite you-tubers. I like how he used crushed light bulbs as a cathode in his spectrometer. I have a surplus Pirani vacuum gauge that I'm using now, but am interested in

Right. Thanks Farhan. And have a good weekend! Rafael

It is too early to think about that. The sbitx is an add-on for existing radios with a little bit of modification to the crystal filter. I am designing a new radio to go with it. But, the ubitx, as a

Dear Farhan, Do you plan to "deploy" sBITX as uBitx, with pre-assembled selling and so on? Thanks, Rafael Diniz

where was the list tom dave k7da

my 170m loop is made from 3mm antenna wire ... a thin wire from a tvset wont work dg9bfc sigi Am 04.06.2021 um 04:32 schrieb masch57:

Wire, yes, and don't be picky about it.? Old CRT TVs or monitors have deflection coils with lots of thin wire that is free and nearly invisible.? Push it through the screen in your window and far

hight is might ... and an elmer once said to me if you can not make it high then make it long :-) dg9bfc sigi (allday aerial is a 170m lopp 10m agl) Am 04.06.2021 um 03:56 schrieb Gordon Gibby:

I’m actually amazed that you are doing as well as you are. There is a concept called “aperture”that relates to the volume of space from which a given antenna extracts signal If you have more