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Old 05-24-2009, 09:17 PM   #11 (permalink)
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Default Maybe I'm looking for problems that don't exist?

Hi,

I probably should have mentioned this before, but I don't have, nor do I intend to have cable or satellite TV. I use a converter box (TIVAX STB-8) and need a VHF/UHF antenna.

I live only 8 miles south of Boston, so I don't know why AntennaWeb.org told me I need the "Large Directional Pre-Amp Antenna". It doesn't make sense. Maybe I'm reading it wrong? I used my full address including my 9-digit postal code. I answered "No" to the following:

"Are there any buildings, steeples, towers, or other structures taller than four stories within four blocks of your location, airports within two miles of your location, and/or many nearby trees over 30 feet tall?"

I cut and pasted below "Show All Stations" from AntennaWeb.org.

Assignment
red - vhf WGBH 2 PBS BOSTON, MA 305° 11.7 2
red - vhf WBZ 4 CBS BOSTON, MA 305° 11.7 4
red - vhf WCVB 5 ABC BOSTON, MA 305° 11.7 5
red - vhf WHDH 7 NBC BOSTON, MA 307° 10.8 7
* red - vhf WHDH-DT 7.1 NBC BOSTON, MA Jun 12, 2009 (post-transition) 307° 10.8 7


* blue - uhf WBPX-DT 68.1 ION BOSTON, MA 304° 10.7 32
* blue - uhf WCVB-DT 5.1 ABC BOSTON, MA 305° 11.7 20
* blue - uhf WBZ-DT 4.1 CBS BOSTON, MA 305° 11.7 30
* blue - uhf WFXT-DT 25.1 FOX BOSTON, MA Jun 12, 2009 (post-transition) 304° 10.7 31
blue - uhf WLVI 56 CW CAMBRIDGE, MA 305° 10.7 56
* blue - uhf WMFP-DT 62.1 SAH LAWRENCE, MA 306° 11.0 18
blue - uhf WSBK 38 IND BOSTON, MA 305° 10.7 38
* blue - uhf WBZ-DT 4.1 CBS BOSTON, MA Jun 12, 2009 (post-transition) 305° 11.7 30
* blue - uhf WGBH-DT 2.1 PBS BOSTON, MA 305° 11.7 19
blue - uhf WFXT 25 FOX BOSTON, MA 305° 10.7 25


violet - uhf WTMU-LP 32 TEL BOSTON, MA 350° 7.3 32
* violet - uhf WHDN-DT 26.1 IND BOSTON, MA 1° 7.6 26
* violet - uhf WLVI-DT 56.1 CW CAMBRIDGE, MA 305° 10.7 41
* violet - uhf WSBK-DT 38.1 IND BOSTON, MA 305° 11.7 39
* violet - uhf WGBX-DT 44.1 PBS BOSTON, MA 305° 11.7 43
violet - uhf WFXZ-CA 24 BOX BOSTON, MA 306° 11.0 24
* violet - uhf WHDH-DT 7.1 NBC BOSTON, MA 308° 10.8 42


These are the three stations I watch/watched regularly:

WLVI-DT 56.1 CW CAMBRIDGE, MA 305° 10.7 41
WSBK-DT 38.1 IND BOSTON, MA 305° 11.7 39
WGBX-DT 44.1 PBS BOSTON, MA 305° 11.7 43 (already lost this one even with converter box)

To get these 3 channels in the violet zone AntennaWeb.org says...

"You need a Large Directional Antenna.

These large, multi-element rooftop antennas are used in weak signal areas for maximum possible TV reception. These antennas can be used in ANY LOCATION, but require an amplifier and roof mounting to receive blue and purple channels. Amplifiers are not recommended for yellow channels."

It also showed "Large Directional w/pre-amp" in the violet area of the diagram.

I tried TVFool.com using my street address with 9-digit postal code. Here is the link for my TV Signal Analysis Results from TVFool when I asked for "Post-Transition - All Channels":[/i]

TV Fool

It looks like it tells a different story. Maybe it's the "Post-Transition" factor in TVFool?

Sorry for sending you all this info, but I don't know what to exclude. If it turns out I just can't interpret the info correctly I apologize profusely.

Thank you so much,

Stephanie
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Old 05-25-2009, 12:20 AM   #12 (permalink)
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good to see someone else in the boston market! welcome to the forum.
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Old 05-25-2009, 12:37 PM   #13 (permalink)
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Originally Posted by RaRaLew View Post
Hi,

I probably should have mentioned this before, but I don't have, nor do I intend to have cable or satellite TV. I use a converter box (TIVAX STB-8) and need a VHF/UHF antenna.

These are the three stations I watch/watched regularly:

WLVI-DT 56.1 CW CAMBRIDGE, MA 305° 10.7 41
WSBK-DT 38.1 IND BOSTON, MA 305° 11.7 39
WGBX-DT 44.1 PBS BOSTON, MA 305° 11.7 43 (already lost this one even with converter box)

I tried TVFool.com using my street address with 9-digit postal code. Here is the link for my TV Signal Analysis Results from TVFool when I asked for "Post-Transition - All Channels":[/i]

TV Fool

It looks like it tells a different story. Maybe it's the "Post-Transition" factor in TVFool?

Thank you so much,

Stephanie
Stephanie, first my pleasure. Antennas have been my hobby and sold and installed them (not TV antennas but commercial 2way) about my whole life from first 41 meter shortwave long wire when I was a kid.

Antennaweb.org is wrong. Look at it this way. Its commercial, and very conservative to sell more antennas. They paid someone to set up the site, that ties into the FCC database which is not some much full of errors but they have trouble keeping it up to date. They paid someone a few years ago to built the site, and it just sits there and runs without input unless the FCC database changes. It was also built before a lot of stations were on the air reception issues learned.

TVFool.com is run by Andy Lee. He hangs out in his own "Official TVFool Thread" at AVS forum. Official TV Fool forum - AVS Forum He goes by andy.s.lee over there. He takes input from members if they find something wrong and he does his best to fix it. So though not perfect, it is a living breathing project run by a living breathing human and with updates as he has time. You can read a lot about TVFool in the above thread. You can report errors in that thread. That should be enough said why TVFool.com hands down wins.

On another aside he also have FMFool.com with it you can tell if yo need an FM trap on your system to watch CH 7-13. If you live within 5 miles of an FM station, you probably need the trap. You have a low power FM right in the neighborhood but it's very low power. Also WGBH-FM is actually in Quincy, not Boston. I think and hope for you, that WHDH on RF CH 7 is so strong you won't need an FM Trap.

Your three favorite stations are all actually on UHF and will stay UHF post transition.

WLVI-DT RF41 (means it's really on CH41 though the dial reads 56)
WSBK-DT RF39
WGBX-DT RF43

Since all of your stations are in one direction, strong (to an outdoor or attic antenna) the best thing to do is put up an VHF/UHF antenna so you can watch NBC if you want. You won't save any money excluding VHF from the system.

You don't need a rotor, you don't even want to think about a pre-amp. A good antenna outside would drive 4 TVs with splitters.

======

Now is just depends on what type of mounting you want to do, could determine which antenna to choose. And do you need to feed more than one TV.

Do you want to put the antenna:

1) Attic
2) Pole mounted to the side of the house
3) J-pole mount bolted to the side of your house.

A J-pole is the same thing you see satelittle dishes mounted on the sides of house. If you use an outdoor j-pole, it would need to be on the west side of the house. If you are close to the neighbors house, the pole below might be better.

Pole mounted to the house means one that goes from the ground, up bolted to the side of the house then above it for the antenna.

Attic means literally in the attic. It can be hung with sting from the rafters or a short pole (like a short j-pole) can be mounted to the bottom boards.

Think about your mounting options now and then we can move to the next step.
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Old 05-25-2009, 12:38 PM   #14 (permalink)
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good to see someone else in the boston market! welcome to the forum.
What part of town do you live in and what antenna do you use?
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Old 05-25-2009, 12:50 PM   #15 (permalink)
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use the antenna craft U8000 place it on the outside of the house it will have the the broadest range you need no pre amp. place it about 25 ft in air or more, it will also pick up HIgh Vhf so it will get some of the high VHF as well. point it to 290 degrees and see what happens, solidsignal.com has the antenna. there is no assembly with this 8 bay that's one reason why I like it.

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Old 05-25-2009, 01:02 PM   #16 (permalink)
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They don't want to turn the antenna so they can set their Tivo to record. It's big ticket to fill and I am not sure my idea would work, but if willing to experiment it's the only idea I have that doesn't need a rotor that doesn't use 3 antennas.

Cowboy, do you know anyone that has tried stacking two YA-1713s?
yes but they have to be 8 ft apart on the mast.
but a Antenna craft U 8000 would get the UHF and the High VHF it does for me.
yes but they have to be 8 ft apart on the mast.
but a Antenna craft U 8000 would get the UHF and the High VHF it does for me.
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Old 05-25-2009, 03:51 PM   #17 (permalink)
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Removed by Author. Does not relate to thread.

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Old 05-25-2009, 07:08 PM   #18 (permalink)
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No i just replyed to them I accidentally hit edit one time but caught the mistake and didn't save it
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Old 05-27-2009, 12:06 PM   #19 (permalink)
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yes but they have to be 8 ft apart on the mast.
but a Antenna craft U 8000 would get the UHF and the High VHF it does for me.
I lost track of what you meant. Which antennas should be 8 ft apart?
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Old 05-27-2009, 12:42 PM   #20 (permalink)
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the two YA-1713 should be 8ft apart from most people I know that stack these antennas you can also gang them side by side.
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