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update: ran some tests and, slightly changing the length of the side it's possible to relieve the FM band "issue", by shortening the side to (about) 65cm or lenghtening it to (about) 80cm the gain in the 70...120 MHz range goes back to negative and may avoid issues with FM "blowtorch&...

:( I hope this is nothing serious and that you'll get better soon! I hope that too, and hope it will be over in a while, but let's move on :) 1. Height flattens the lobe but above 14 MHz, it looks like more than 3-5m can have the opposite effect: You're further confirming my observations, to mantai...

as for height effect on this antenna this first image shows how the pattern changes when we change the antenna height https://i.postimg.cc/tJs1JjdH/dirloop01.png as you can see, raising the antenna we lower the radiation lobe so cutting off more and more the sensitivity to high angle signals while i...

Hi Andrew, Hi there, Ollie :) ! This is super exiting! I meant to comment on your cardioid loop thread but my reply would've created a new page and pushed your great post to the previous one. What I meant to comment on that thread is that the "cardioid loop" concept looks particularly pro...

The image below (full size HERE ) contains all the infos needed to build a small loop antenna, fitting even in restricted spaces, which will offer an "unidirectional" lobe like the one from a "beam", the lobe is mantained from a few KHz up to above 30 MHz and allows to "null...

13dka wrote: ↑Sun Jun 26, 2022 1:56 pm Well I have so many other hobbies...

I do too, and "playing impossible radio" is one of those

well, don't complain too much, it may become worse

https://www.sciencealert.com/a-giant-su ... t-at-earth

it all depends from the direction of that sunspot

start here

https://swling.com/blog/tag/msi-sdr/

let aside the receiver, most infos will fit, then proceed here

https://swling.com/blog/tag/linear-loaded-dipole/

and then... we may ragchew about antennas and more

btw, welcome to this hideout

further details here, by the way

https://swling.com/blog/2022/06/help-re ... e-21-2022/

Folks, do you know a good and possibly cheap manufacturer of metal enclosures for electronics in EU (or shipping to EU, no china stuff, please) ?