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Buying An Astroplane
- Thread starter HomerBB
- Start date
007, can you draw us a picture of your idea? I can be convinced to change my mind with a good pictorial argument.
I didn't want to re-read the patent, but you force me to find the part where they talk about dissimilar circuits that provide similar results. I believe those little hints have meaning, not that I fully understand, but such does cause me to pause and wonder.
I didn't want to re-read the patent, but you force me to find the part where they talk about dissimilar circuits that provide similar results. I believe those little hints have meaning, not that I fully understand, but such does cause me to pause and wonder.
Now you're making me want to read the patent. How 'bout a link.
I was simply thinking the RF begins at the connector, flows down and around both sides of the ring simultaneously, then back up to the tip, completing a ¾λ while the 180° inverted phase shield potential goes across the bracket to the top ¼λ as a counterpoise.
Almost like a 'circular' current flow, not to be cornfused with circular polarization.
I would expect it would still tune correctly if ½ of the ring was removed and the antenna was isolated from all metal, including the coax - via a cmc choke.
I may stand mine up on my lower flat section of roof and pull the coax (incl cmc choke) off at 90° from the antenna over to the upper roof about 12' from it, just to see if it will still perform the same as when it has the complete ring, and a mast up in it.
I was simply thinking the RF begins at the connector, flows down and around both sides of the ring simultaneously, then back up to the tip, completing a ¾λ while the 180° inverted phase shield potential goes across the bracket to the top ¼λ as a counterpoise.
Almost like a 'circular' current flow, not to be cornfused with circular polarization.
I would expect it would still tune correctly if ½ of the ring was removed and the antenna was isolated from all metal, including the coax - via a cmc choke.
I may stand mine up on my lower flat section of roof and pull the coax (incl cmc choke) off at 90° from the antenna over to the upper roof about 12' from it, just to see if it will still perform the same as when it has the complete ring, and a mast up in it.
Does anyone think the AP has some directionality, or maybe some nulls?
I rotated the antenna on the pole 180° and now it seems to have dropped a little receive in a given direction. I'm going to watch it a while and see what I think.
I rotated the antenna on the pole 180° and now it seems to have dropped a little receive in a given direction. I'm going to watch it a while and see what I think.
Homer, I've never noticed directionality, but I do set the element side with the top hat in the direction of most of the stations in my radio group which is Northwest...just in case that side is the actual radiator.
I don't think the Patent talks about directionality, but someone has raised the issue regarding the small lobe in the pattern located at the base of one of the nulls. I figure this little lobe may indicate that the radiator is truly mounted to one side of the tuner, maybe it is similar to a j-pole in this regard. I would refer to it as skewing of the pattern.
007 asked about the Patent. The number is 3587109 and I use: Google Patents
I'm going to hold you to your idea for a test. Keep us posted, OK?
So far i haven't noticed any TVI, and the neighbors haven't complained. I've got this one up to clear of everything. Even running an amp hasn't produced any to my knowledge.
to whom were you talking?Marconi said:
I'd recommend wrapping a common mode current choke in the coax a few feet below the ring.
I know, bringing it back from the grave...
I have seen this recommended on this forum several times but never any conclusions as to if it helped hurt or did not have any effect?
I know, bringing it back from the grave...
I have seen this recommended on this forum several times but never any conclusions as to if it helped hurt or did not have any effect?
Good stuff Homer ! I should continue with mine as well , I've only had it over 2 years now lol