开云体育

I created a Temporary files folder in Files. I named it so it should always be at the top of the list. /g/loopantennas/files/111AAATemporaryFiles -- Steve Greenfield AE7HD

Well, in all credit to you John, at least you tried it, and reported back to the group. Stuff like this is always a worthwhile learning exercise, and often takes you off in a different direction,

When something is posted in Files, the only way to view it is to download it. If you have not put a description, if I have to download a file to look at it to tell what it is, I'm deleting it. There

What do you mean by tried to post? The list does not allow attachments, you must post them in the Files section. Preferably in a folder with an appropriate name. Think about someone looking in the

I have many Loop antenna files that Dallas either built or modeled. They are all larger loops, as in a triangle 15ft high and 60 at the base or a Flag 14ft x 29ft. Many phased two and 4 antenna

How much room do you have???

There is NO free lunch!! To verify the presence or absence of coupling between the two co-planar resonant loops, I mounted two spiral-wound loops "edge-to-edge".? Loop "A" was resonant at the

A high Q series tuned notch connected across the receiver input is one method to reduce the signal level of unwanted broadcast stations. Alternatively a high Q parallel tuned (wave trap) circuit in

Hello John: The FRG-7 is a good receiver. I've had a few in the shop over the past 30-40 years. Anyhow, here's a page on my old site for some simple filters. If you combine the LP with the HP you

Thanks for your replies.? The issue of the two loops coupling to each other had not occurred to me, definitely food for thought, if I breadboard the scheme I'll make this spacing adjustable. As far

Hi I think you are possibly wasting your time, But hey give it a go! Looking forward to your results. Phased set of active loops does work however.. Ie read lz1aq delay line… I have it working

John A number of tuned loops connected together would not sum as you describe, it would be a vector sum that would be very dependant on having every loop exactly tuned to the same frequency so that

Thanks to all who replied to my original post. As most of the replies mentioned, phasing the loops will be the main issue. I have tried to address this by stacking the loops vertically such that the

Anyone tried a calcium carbide cannon to launch ropes to hoist up antennas? I built one out of ABS pipe and fittings with a BBQ igniter, and a charger from Big Bang

good luck still to cold here to mess with antennas yet? ?but pre planning some small tower stuff for the six meter cycle coming. 73 Murf

Ooops, forgot the video...sorry.bb Diversity Signal Controller and Noise Cancelling for All Band SWL and Ham | | | | | | | | | | | Diversity Signal Controller and Noise Cancelling for All

Ah also, The tuned loops are higher Q than broadband loops and they will interact. I have experimented with two tuned loops parallel to each other, and only one needed to actually be fed, as there

Hi John. I tried that some years ago. I already had a Pixel loop which is really outstanding. I got another one and placed above the original by about 1 meter. (some day I'll try this with a

I think you may encounter some problems with the physical spacing and the feeds simply being connected in series. However a similar technique is used a lot with active broadband loops, so in theory it

Good afternoon all, Has anyone had experience with stacking multiple relatively-small tuned loops as a means for increasing the effective height of the resulting array without violating the