Forum: Antennas
27-May-2020, 5:29 AM
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Replies: 39
Views: 43,611
30-2476 MOD 5 Modeled Yagi VHF
All I did was put the reflector from another 30-2476 on this new Super Long Yagi. I had to remove the single reflector and put the 4 reflector on:
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Forum: Antennas
27-May-2020, 4:33 AM
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Replies: 39
Views: 43,611
30-2476 MOD 4 Modeled Yagi
Test results were favorable.
http://forum.tvfool.com/attachment.php?attachmentid=3775&stc=1&d=1590555716
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Forum: Antennas
16-May-2020, 7:12 PM
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Replies: 39
Views: 43,611
Project braced.
One more, before she goes up in the air, today!!
http://forum.tvfool.com/attachment.php?attachmentid=3754&stc=1&d=1589656098
Hey, you guys ! I over calculated the boom length. There is an extra...
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Forum: Antennas
15-May-2020, 1:40 PM
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Replies: 39
Views: 43,611
VHF super-long yagi
Triple O and Tim and whoever else is following this with interest. We had the best weather yesterday after the storms went through. However it wasn't the end of the rains but I had a full three or...
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Forum: Antennas
10-May-2020, 11:14 AM
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Replies: 39
Views: 43,611
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Forum: Antennas
8-May-2020, 4:22 PM
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Replies: 39
Views: 43,611
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Forum: Antennas
24-Apr-2020, 8:38 PM
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Replies: 39
Views: 43,611
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Forum: Antennas
24-Apr-2020, 3:44 AM
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Replies: 39
Views: 43,611
Thank you again Tim.
So, because I would...
Thank you again Tim.
So, because I would have to start completely over to build a log periodic it looks like I probably won't do that right now. I guess I would be a project for another day.
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Forum: Antennas
23-Apr-2020, 12:01 PM
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Replies: 39
Views: 43,611
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Forum: Antennas
22-Apr-2020, 10:49 PM
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Replies: 39
Views: 43,611
220 Mhz
Frequency : 220 MHz
Wavelength : 1364 mm
Rod Diameter : 10 mm
Boom Diameter : 18 mm
Boom Length : 6068 mm
d/lambda : 0.007 ( min.: 0.002 , max.: 0.01 )
D/lambda ...
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Forum: Antennas
22-Apr-2020, 10:48 PM
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Replies: 39
Views: 43,611
183 MHz
Frequency : 183 MHz
Wavelength : 1639 mm
Rod Diameter : 10 mm
Boom Diameter : 18 mm
Boom Length : 7290 mm
d/lambda : 0.006 ( min.: 0.002 , max.: 0.01 )
D/lambda ...
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Forum: Antennas
22-Apr-2020, 9:57 PM
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Replies: 39
Views: 43,611
Good info.
Hi Tim,
Thanks for the information.
Not specifically RF 8 that I'm after, it's just a transmitter I am using to measure my results. One reason is it is at least 49 miles away and makes it a far...
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Forum: Antennas
22-Apr-2020, 11:36 AM
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Replies: 39
Views: 43,611
16 Director Mod
After disappointing results adding four elements on to the existing factory antenna (Mod 1), I figured it was time to go for broke. I was already geared up to go further anyhow.
Mod 2. I...
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Forum: Antennas
21-Apr-2020, 4:32 AM
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Replies: 39
Views: 43,611
I've made it to the Forum circuit, asking for...
I've made it to the Forum circuit, asking for advice. Luckily for me a couple of guys offered help over here Tripleo and over on AVS Calaveras.
Both agreed that the length of the boom is the most...
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Forum: Antennas
19-Apr-2020, 3:59 PM
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Replies: 39
Views: 43,611
Calaveras low loss combiner
Oh yes, I edited my post to give Calaveras credit. His instructions were if it was a solid polyethylene insulator to make it 10 inches exactly including the connectors. However I missed that...
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Forum: Antennas
19-Apr-2020, 1:34 PM
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Replies: 39
Views: 43,611
Tripleo,
You said no new ideas but you did...
Tripleo,
You said no new ideas but you did give me some ideas. Today is supposed to be a nice day today and I want to get some progress done.
I'm trying to gather enough knowledge and yours is...
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Forum: Antennas
17-Apr-2020, 7:37 PM
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Replies: 39
Views: 43,611
Combatting losses
I haven't done much with the antennas as I am not actually doing things on a scientific plan. So I don't want to start drilling and moving things around till I have a better idea on where things...
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Forum: Antennas
12-Apr-2020, 3:25 PM
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Replies: 39
Views: 43,611
2020-04-12 no changes better results. hmmmm...
Good Morning, the rain subsided overnight, although more is on the way, so climbing back up the ladder today to finish up and possibly some tweaks.
This mornings scan, big improvement!
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Forum: Antennas
12-Apr-2020, 2:59 AM
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Replies: 39
Views: 43,611
Antenna pics
Some pictures.
http://forum.tvfool.com/attachment.php?attachmentid=3662&stc=1&d=1586659854
http://forum.tvfool.com/attachment.php?attachmentid=3661&stc=1&d=1586659741
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Forum: Antennas
12-Apr-2020, 1:26 AM
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Replies: 39
Views: 43,611
Got the dual VHF moved up !
I almost didn't move the pair, rain was on the radar.
I definitely wanted to get it done though because I think we're going to have rain the next couple days.
I was only about halfway done when...
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Forum: Antennas
11-Apr-2020, 3:47 PM
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Replies: 39
Views: 43,611
More baseline testing
Happy Saturday!
I'm ready to do some testing but not sure what to test today!
So first things first. First thing this morning I did another comparison after my small changes.
Blue trace is...
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Forum: Antennas
11-Apr-2020, 1:54 AM
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Replies: 39
Views: 43,611
Todays Testing
Well, Thanks Tripelo for the suggestions, I figured some testing was in order to isolate the reception issue.
First, I decided to square up every thing, I readjusted the cross bar and readjusted...
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Forum: Antennas
10-Apr-2020, 8:14 PM
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Replies: 39
Views: 43,611
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Forum: Antennas
10-Apr-2020, 5:08 AM
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Replies: 39
Views: 43,611
Mediocre reception so far.
Here's the initial test. This is the RTL SDR Spectrum analyzer, with the new array pointing at Milwaukee and RF 8.
http://forum.tvfool.com/attachment.php?attachmentid=3646&stc=1&d=1586523217
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Forum: Antennas
9-Apr-2020, 12:57 AM
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Replies: 39
Views: 43,611
Build details...
Tripelo, thank you for your Insight. You asked me about the bending strength of the inch and a half aluminized exhaust tubing that forms the crossbar between the two booms. Tubing is fairly stout.
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