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Search: Posts Made By: rabbit73
Forum: Help With Reception 21-Sep-2018, 12:32 AM
Replies: 31
Views: 1,475
Posted By rabbit73
Ordinarily, the antenna boom should be level, but...

Ordinarily, the antenna boom should be level, but at some locations reception is improved by tilting the front end up and even less often tilting the front end down.

Tilting the front end up...
Forum: Help With Reception 18-Sep-2018, 10:22 PM
Replies: 31
Views: 1,475
Posted By rabbit73
Signal strength is certainly important, but you...

Signal strength is certainly important, but you want the maximum signal quality and 100% symbol quality.


Thank you for the update.

Good luck with your project. I hope that you will see an...
Forum: Help With Reception 18-Sep-2018, 1:21 AM
Replies: 31
Views: 1,475
Posted By rabbit73
Here are the signal lines for KPNX and KPHO; ...

Here are the signal lines for KPNX and KPHO;

https://i.imgur.com/K582Uzp.jpg

changing scale to zoom in on signal lines:

https://i.imgur.com/9HjBgfY.jpg

the two transmitters are very close...
Forum: Help With Reception 17-Sep-2018, 10:26 PM
Replies: 31
Views: 1,475
Posted By rabbit73
Thank you for the callsigns. NBC is KPNX. ...

Thank you for the callsigns. NBC is KPNX.

The main purpose of the red line is to show in an oblique "birds-eye" view where the signals from the SW cross the house across the street to help you...
Forum: Help With Reception 17-Sep-2018, 8:01 PM
Replies: 31
Views: 1,475
Posted By rabbit73
They both perform well, based on the samples I...

They both perform well, based on the samples I tested. I ordered two of the AD UVSJs and one had the label upside down, but it worked OK. (Monday morning production)
...
Forum: Help With Reception 17-Sep-2018, 5:25 PM
Replies: 31
Views: 1,475
Posted By rabbit73
The link works fine. ...

The link works fine.

https://i.imgur.com/Quz0AdL.jpg

Most people put the UHF on top because VHF signals can bend down a little better in rough terrain, but you can do it the way you want.
Forum: Help With Reception 17-Sep-2018, 1:19 AM
Replies: 31
Views: 1,475
Posted By rabbit73
Many say that it is just as good. The instruction...

Many say that it is just as good. The instruction sheet says 10 to 14 dB.
https://www.newark.com/stellar-labs/30-2476/fringe-directional-antenna-vhf/dp/71Y5462
...
Forum: Help With Reception 15-Sep-2018, 7:30 PM
Replies: 31
Views: 1,475
Posted By rabbit73
It's not clear to me what that extra wire is...

It's not clear to me what that extra wire is bridging. I only know that any extra wire might reduce the performance of the antenna.
Yes, Denny is good at marketing. I don't have any experience with...
Forum: Help With Reception 14-Sep-2018, 9:41 PM
Replies: 4
Views: 207
Posted By rabbit73
That is the correct way to wire a turnstile...

That is the correct way to wire a turnstile antenna.

In theory, perpendicular to either one of the dipoles, but I think you might need to make some aiming tests for your favorite stations.
Forum: Help With Reception 14-Sep-2018, 8:13 PM
Replies: 31
Views: 1,475
Posted By rabbit73
https://i.imgur.com/PZa2nLF.jpg Either way...

https://i.imgur.com/PZa2nLF.jpg

Either way will work. There is very little loss in a short length of coax; a small fraction of a dB. Mechanical and weatherproofing considerations should determine...
Forum: Help With Reception 14-Sep-2018, 7:02 PM
Replies: 31
Views: 1,475
Posted By rabbit73
Yes, it could be a problem. The performance of...

Yes, it could be a problem. The performance of the antenna is based on the diameter and spacing of the two wires that go from the UHF section to the CB-8269 black housing. It probably wouldn't be a...
Forum: Help With Reception 14-Sep-2018, 12:30 AM
Replies: 4
Views: 207
Posted By rabbit73
Crossed dipoles form a turnstile antenna. In...

Crossed dipoles form a turnstile antenna. In theory, it's a pretty good Omni with peaks at 0, 90, 180, and 270 degrees. There are slight nulls between those directions....
Forum: Help With Reception 13-Sep-2018, 10:48 PM
Replies: 31
Views: 1,475
Posted By rabbit73
These fins: https://i.imgur.com/725Q3OB.jpg ...

These fins:

https://i.imgur.com/725Q3OB.jpg

They look OK to me, but what are these extra wires? Are they connected to the coax downlead for the antenna?


https://i.imgur.com/ku2YPOX.jpg
Forum: Help With Reception 13-Sep-2018, 10:27 PM
Replies: 31
Views: 1,475
Posted By rabbit73
KPHO, virtual channel 5.1, is real channel 17,...

KPHO, virtual channel 5.1, is real channel 17, isn't? If you are going to use the virtual channel number, please use the decimal form to avoid confusion.
That's true; OTA signals are constantly...
Forum: Help With Reception 12-Sep-2018, 1:07 PM
Replies: 31
Views: 1,475
Posted By rabbit73
Thank you for the additional information. Looking...

Thank you for the additional information. Looking forward to your next test results.

Glad that you can now see the photos.
Forum: Help With Reception 11-Sep-2018, 10:45 PM
Replies: 31
Views: 1,475
Posted By rabbit73
Thank you for your permission; nice tower. ...

Thank you for your permission; nice tower.

https://i.imgur.com/cRvM5nC.jpg

https://i.imgur.com/crhaqzR.jpg

https://i.imgur.com/RortvGU.jpg
Forum: Help With Reception 11-Sep-2018, 5:17 PM
Replies: 31
Views: 1,475
Posted By rabbit73
I don't have the specs for the Trisonic FM Trap;...

I don't have the specs for the Trisonic FM Trap; hope it works as well as the HLSJ.
Forum: Help With Reception 11-Sep-2018, 5:08 PM
Replies: 31
Views: 1,475
Posted By rabbit73
From niv by PM: Here are the pictures...

From niv by PM:


Here are the pictures again, using links from my image host; I hope you can see them:

This map is in post #2:

https://i.imgur.com/Q7tKKF7.jpg

These two report images are...
Forum: Help With Reception 11-Sep-2018, 1:36 AM
Replies: 31
Views: 1,475
Posted By rabbit73
From niv by PM: I will try to redo the...

From niv by PM:



I will try to redo the photos so that you can see them.
Forum: Help With Reception 10-Sep-2018, 2:06 AM
Replies: 31
Views: 1,475
Posted By rabbit73
From niv by PM: Thank you for the...

From niv by PM:



Thank you for the additional information.

I think the coax should be grounded with a grounding block connected to the house electrical system ground for electrical safety...
Forum: Help With Reception 9-Sep-2018, 6:26 PM
Replies: 42
Views: 3,658
Posted By rabbit73
I also love RF and antennas, Ken. 73, ...

I also love RF and antennas, Ken.

73,
rabbit
W4...
ex-W2...
ex-DL4..
Forum: Help With Reception 9-Sep-2018, 2:09 AM
Replies: 31
Views: 1,475
Posted By rabbit73
Yes, Joe; the report makes it look like Phoenix...

Yes, Joe; the report makes it look like Phoenix channels will be easy to receive and the Tucson channels will be impossible to receive.

It is well known that the reports are much less accurate for...
Forum: Help With Reception 9-Sep-2018, 1:50 AM
Replies: 42
Views: 3,658
Posted By rabbit73
Yes, freedom of speech is important to me too,...

Yes, freedom of speech is important to me too, Ken.

I do value your experience, but you will not be able to give us the benefit of your experience if you are not allowed to post.

That is why I...
Forum: Help With Reception 8-Sep-2018, 10:46 PM
Replies: 42
Views: 3,658
Posted By rabbit73
That is rude, Ken. You are not showing the...

That is rude, Ken.

You are not showing the proper respect to another forum member.

ADTech knows a lot about antennas and reception. He has helped many people improve their reception on this...
Forum: Help With Reception 8-Sep-2018, 3:05 PM
Replies: 31
Views: 1,475
Posted By rabbit73
Thank you for the thorough and well-thought-out...

Thank you for the thorough and well-thought-out explanation; it makes perfect sense from a business standpoint.

Antennas Direct was the last regular supplier of FM traps, which are vital for good...
Showing results 1 to 25 of 500

 

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