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Search: Posts Made By: rabbit73
Forum: HDTV Technical   05-22-2015, 11:26 AM
Replies: 10
Views: 125
Posted By rabbit73
The DB8E has the best gain for your location. Two...

The DB8E has the best gain for your location. Two 751s would cost more than a DB8E clone like the Solid Signal Xtreme Signal HDB8X 8 Bay VHF/UHF HDTV Antenna (HDB8X)'...
Forum: HDTV Technical   05-22-2015, 10:34 AM
Replies: 10
Views: 125
Posted By rabbit73
Hi, Jimmy: It doesn't look very promising...

Hi, Jimmy:

It doesn't look very promising to me. The only US channels you are likely to get are KVOS, KBCB, and K24IC.

But there are problems even with them. They are all located SW, and...
Forum: HDTV Technical   05-21-2015, 07:10 PM
Replies: 18
Views: 340
Posted By rabbit73
Thank you.

Thank you.
Forum: HDTV Technical   05-21-2015, 07:57 AM
Replies: 18
Views: 340
Posted By rabbit73
Not that I know of. A possible exception that...

Not that I know of. A possible exception that sometimes works, is to watch the trace for the best presentation of the pilot signal.

Calaveras has already shown us that you can have a good looking...
Forum: HDTV Technical   05-21-2015, 04:35 AM
Replies: 18
Views: 340
Posted By rabbit73
Like this? ...

Like this?

http://www.avsforum.com/forum/attachment.php?attachmentid=728346&stc=1&d=1432207656


The spectrum analyzer trace is amplitude VS frequency, but it doesn't take into consideration...
Forum: HDTV Technical   05-19-2015, 07:03 PM
Replies: 1
Views: 96
Posted By rabbit73
Thanks for the SA images, Chuck. You are making...

Thanks for the SA images, Chuck. You are making the kinds of tests I always wanted to do, but wasn't able to do.
Forum: HDTV Technical   05-19-2015, 06:44 PM
Replies: 18
Views: 340
Posted By rabbit73
Your SA images are further proof that a good...

Your SA images are further proof that a good looking trace, with what looks like enough signal above the noise floor for a decent SNR, is no guarantee that the signal will decode.

This reminds me...
Forum: HDTV Technical   05-12-2015, 11:03 AM
Replies: 125
Views: 1,973
Posted By rabbit73
Glad to see that you are considering the Faraday...

Glad to see that you are considering the Faraday cage concept. It might help. You can use one constructed of fine wire mesh screening instead of steel for your air conditioner, TV, or antenna. Bill...
Forum: HDTV Technical   05-11-2015, 04:50 AM
Replies: 20
Views: 337
Posted By rabbit73
How difficult would it be to remove the UHF...

How difficult would it be to remove the UHF section from a combo if compactness is important? Are there any combos that would make this mod easy?

In order to keep the same feed point, you could...
Forum: HDTV Technical   05-09-2015, 08:07 AM
Replies: 6
Views: 251
Posted By rabbit73
Thanks for the interesting images. They certainly...

Thanks for the interesting images. They certainly demonstrate the importance of vegetation in the signal path that is ignored by the TVFOOL report simulation.

I notice that ADTech is becoming more...
Forum: LCD Flat Panel Displays   04-29-2015, 04:19 PM
Replies: 3
Views: 129
Posted By rabbit73
Welcome, John: The latest Panasonic Smart...

Welcome, John:

The latest Panasonic Smart TVs come with Freetime fitted as standard, brought to you by Freesat, which is satellite.
http://www.freetime.tv/ (http://www.freetime.tv/)

...
Forum: HDTV Technical   04-28-2015, 12:45 PM
Replies: 27
Views: 558
Posted By rabbit73
It probably is, because the sub channels often...

It probably is, because the sub channels often have lower resolution to fit it in the same channel as the main channel (21.1).


Even Fox? If so, you lucked out. You might be able to avoid a...
Forum: HDTV Technical   04-28-2015, 12:17 PM
Replies: 27
Views: 558
Posted By rabbit73
OK, you have tried to split the difference, and...

OK, you have tried to split the difference, and aim for the middle, using worst case, but the results are less than satisfactory. You don't know what is causing the problem, so now you need to go...
Forum: HDTV Technical   04-23-2015, 03:19 PM
Replies: 21
Views: 514
Posted By rabbit73
That's not for the VF, it's for the reflector...

That's not for the VF, it's for the reflector length. I will edit that post for clarity; thanks for calling it to my attention.
5540/12 = 461.7
VF compensation already incorporated in constant 5540...
Forum: HDTV Technical   04-22-2015, 07:14 AM
Replies: 18
Views: 237
Posted By rabbit73
Yes, it would probably make FM weaker, but do you...

Yes, it would probably make FM weaker, but do you have any VHF-High signals you need to receive?
Forum: HDTV Technical   04-22-2015, 07:07 AM
Replies: 18
Views: 237
Posted By rabbit73
That might work. All 2-way splitters are rated...

That might work. All 2-way splitters are rated for UHF and VHF, but don't confuse it with a UVSJ which is also called a UFH/VHF combiner when you buy it.

Why do you want it to pass power if it is...
Forum: HDTV Technical   04-22-2015, 06:53 AM
Replies: 18
Views: 237
Posted By rabbit73
The baluns in the older antennas were the ferrite...

The baluns in the older antennas were the ferrite core hybrid type that worked well for UHF and VHF. The baluns in the newer antennas are the printed circuit board type that work well for UHF, but...
Forum: HDTV Technical   04-22-2015, 04:56 AM
Replies: 18
Views: 237
Posted By rabbit73
Don't do that; the two devices are not...

Don't do that; the two devices are not equivalent. Both antennas use a splitter in reverse as a combiner. A UHF/VHF combiner, AKA UVSJ, is a diplexer used to combine a UHF antenna with a VHF antenna.
Forum: HDTV Technical   04-21-2015, 04:28 PM
Replies: 18
Views: 237
Posted By rabbit73
Pete Higgins tested one and has posted his...

Pete Higgins tested one and has posted his results on several forums.
http://www.highdefforum.com/local-hdtv-info-reception/141103-solid-signal-own-brand.html...
Forum: HDTV Technical   04-21-2015, 03:21 PM
Replies: 21
Views: 514
Posted By rabbit73
A dipole antenna is bi-directional. ...

A dipole antenna is bi-directional.


http://www.avsforum.com/forum/attachment.php?attachmentid=682553&stc=1&d=1429829496
Forum: HDTV Technical   04-21-2015, 01:14 PM
Replies: 27
Views: 558
Posted By rabbit73
Alternative to Jointenna? ...

Alternative to Jointenna?
http://www.avsforum.com/forum/25-hdtv-technical/945821-alternative-jointenna.html (http://www.avsforum.com/forum/25-hdtv-technical/945821-alternative-jointenna.html)

...
Forum: HDTV Technical   04-20-2015, 06:30 PM
Replies: 16,371
Views: 2,854,483
Posted By rabbit73
"348* 44 miles is to the KOLR 10 antenna" doesn't...

"348* 44 miles is to the KOLR 10 antenna" doesn't seem to agree with your tvfool report.

Maybe you should redo your report using the interactive map feature of tvfool and move the teardrop cursor...
Forum: HDTV Technical   04-20-2015, 11:46 AM
Replies: 16,371
Views: 2,854,483
Posted By rabbit73
Yes, the 7698 would be harder to aim for a...

Yes, the 7698 would be harder to aim for a compromise azimuth.

What I had in mind was 1Edge an 2Edge and some known Roamio tuner problems.
http://forum.tvfool.com/showthread.php?t=15025...
Forum: HDTV Technical   04-20-2015, 11:12 AM
Replies: 16,371
Views: 2,854,483
Posted By rabbit73
I suggest a Winegard HD7698P antenna and an...

I suggest a Winegard HD7698P antenna and an Antennas Direct Juice, RCA TVPRAMP1R, or Channel Master 7778 preamp. The Juice, which is resistant to overload, doesn't have an FM trap, so you need to add...
Forum: HDTV Technical   04-20-2015, 10:13 AM
Replies: 5
Views: 217
Posted By rabbit73
The purists would say you should use a 75 0hm...

The purists would say you should use a 75 0hm termination cap, but it usually doesn't make much difference:
https://www.google.com/?gws_rd=ssl#q=75+ohm+f+terminator+cap...
Showing results 1 to 25 of 1018

 
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