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Hi Alan, That looks good, your work has definitely made a further improvement. I'm not sure how you are judging the change in MF/LF performance between loop sizes, but with the antenna connected, you

Hi John, Yes that's the flaw in the plan, but apart from in lab grade stuff, equipment input and outputs are rarely the nominal impedance that they aim to be. You can obtain ready built connectorised

mind sharing some links/diagrams for dummies like myself? many thanks. // pedro andrade

My balcony is at 4th floor. I tried: wellgood clone, Lz1aq and N4CY moebius, all with 1m dia 20 mm PeXAlPeX multilayer tubing. Well good is the best, but all have too much gain even if the sdr lna is

Hello Alan, Martin et al, Saturday, January 1, 2022 People must be getting bored with my saga by now, so I will keep it as short as I can. Basically, yesterday lent me the opportunity to do some more

A transformer with a 5:6 turn ratio would convert 50 ohms to 72 ohms, so a 50:72 could be used at one end of the coax and a 72:50 at the other. Selecting a suitable ferrite core and winding technique

Good morning all. I have been following all the comments about vibrations on the antenna causing mounting hardware to loosen. I have used the following type of hardware for years at commercial sites

To clarify, Belleville washers are spring washers, much better than split ring if your intent is to provide a spring pressure that allows some movement and change in length. Much stiffer than a spring

Thanks to all for the excellent information. I'm going to give Ian's solution a try. The youloop looks easy to build. I've got the parts already. I also have an LNA that I can put at the feedpoint and

Since you aren't going to use a high end receiver, and you aren't wanting longwave reception I would recommend the inexpensive MLA-30 loop. Sure, in a super quiet location with an excellent receiver,

Hi Paul Other thing to mention is..if you have caught the swl “ bug” then maybe invest in a better sdr as well. Not that expensive ?100 or so gets you an ok one.certainly better than an rtl

The Mini-Whip antennas do not function very well indoors and probably not very well on a balcony. If you're into a bit of home construction, a YouLoop or Moebius antenna is definitely worth a try and

Why would anyone use locking compounds on plastic?

Or.. a 1m loop with suitable preamp.. Ie ccw, Lz1aq, wellbrock etc. Advantage of loop is you can null out a local noise source..disadvantage is bigger than e probe. Both need 12v dc supply. I would

Good fit-for-purpose cautionary advice here Alan.... Leigh VK5LT

I would NEVER USE LOCKING COMPOUND ON PLASTICS. Many locking compounds can destroy plastic parts over time, they are formulated for locking metal part not plastics.? Same goes for some greases. One

I would seriously consider an active E-Field antenna. I built and used one while on the third (top) floor of an apartment in an extremely large complex. It worked quite well from VLF through 20 or so

Roger all! <alienrelics@...> wrote:

The website says: Use of EZNEC Pro/4 and EZNEC Pro/4+ require a license from Lawrence Livermore National Laboratory (LLNL) because of their incorporation of NEC-4.2 code for which LLNL retains the

I have a 10th floor balcony and would like a no tune solution for an rtl-sdr v3 with an upconverter. I've tried a miniwhip from aliexpress. It was pretty deaf. The youloop looks interesting but I