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post #3541 of 3546 Old Yesterday, 08:07 PM
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Looking to cut the cord and get into the OTA game. Went to TV Fool and it looks like the vast majority (90%) of the channels listed are within 20 miles and somewhere on the right half of the compass they show. Additionally, the NM(db) for the main channels is greater than 30. Their guide says that an attic mounted antennae should cover all the channels I care about, but not exactly sure which brand of antenna would be best. I understand a roof mount would be ideal and that I may need a pre-amp, but would rather atatic-mount if the signal is okay, so I am looking for suggestions or recommendations. Had been looking at the channel master CM-4228HD and a CM-C7778 Pre-amp, but not sure if that is overkill.

If it matters, I will probably pair the antenna with a tivo bolt and 1 or two minis as well as some roku's and an apple tv to get content on 3 tvs. Thanks in advance for the feedback and advice!
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post #3542 of 3546 Old Today, 07:23 AM
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The 4228HD is designed for UHF, real channels 14-51. You have two VHF-High channels WXIA NBC real channel 10 and WGTV PBS real channel 8. I suggest the Winegard HD7694P and the 7778. You do have a second PBS, WPBA.

The signal loss in an attic is difficult to predict, because of differences in construction. It will require some experimentation. Aluminum heat barrier, aluminum siding, stucco mesh, and a metal roof will block signals, as will trees or other buildings. I suggest you try the antenna in different locations with it aimed at about 165 to 170 degrees magnetic. Use the signal strength indicator of a TV to help you or the diagnostics screen on the TiVo if the Bolt has that feature. Don't drill any holes yet.

If ION is important to you, it is in a different direction and will require a separate antenna with a custom combiner.

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post #3543 of 3546 Old Today, 12:14 PM
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BTW: WATC (Ch41) is ALSO in the opposite direction...but it's so strong it's likely to come in anyway...although MULTIPATH COULD be excessive....so try up to +/- 20-deg pointing angle away from 168-deg (re True North).

BTW: DC POWER must be PASSED from the WallWart/Power Insertion Module to the CM7778....conventional CABLE RF Splitters normally do NOT have DC PASS (although most SAT RF Splitter do...usually on only ONE Port). Fol. is an inexpensive 4-Port Splitter with DC PASS on only ONE Port to keep DC away from the OTHER Ports [Verify which Port with a DC Ohmmeter]:
http://www.solidsignal.com/pview.asp?p=tsb-41gdc
http://www.picodigital.com/pdf_datasheets/TSB-41GDC.pdf [2, 3 and 4-Port RF Splitters]

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post #3544 of 3546 Old Today, 04:32 PM
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Quote:
Originally Posted by ghengisk78 View Post
Looking to cut the cord and get into the OTA game. Went to TV Fool and it looks like the vast majority (90%) of the channels listed are within 20 miles and somewhere on the right half of the compass they show. Additionally, the NM(db) for the main channels is greater than 30. Their guide says that an attic mounted antennae should cover all the channels I care about, but not exactly sure which brand of antenna would be best. I understand a roof mount would be ideal and that I may need a pre-amp, but would rather atatic-mount if the signal is okay, so I am looking for suggestions or recommendations. Had been looking at the channel master CM-4228HD and a CM-C7778 Pre-amp, but not sure if that is overkill.



If it matters, I will probably pair the antenna with a tivo bolt and 1 or two minis as well as some roku's and an apple tv to get content on 3 tvs. Thanks in advance for the feedback and advice!


I live in west Cobb, I would think, closer than you, and for two TVs needed a preamp. I have a Channel Master DVR+. Really like it.

In my opinion, I'd go for ever kill. Good luck.

I also have a Roku and use PlayStation Vue for cable channels.


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post #3545 of 3546 Old Today, 06:15 PM
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Quote:
Originally Posted by rabbit73 View Post
The 4228HD is designed for UHF, real channels 14-51. You have two VHF-High channels WXIA NBC real channel 10 and WGTV PBS real channel 8. I suggest the Winegard HD7694P and the 7778. You do have a second PBS, WPBA.

The signal loss in an attic is difficult to predict, because of differences in construction. It will require some experimentation. Aluminum heat barrier, aluminum siding, stucco mesh, and a metal roof will block signals, as will trees or other buildings. I suggest you try the antenna in different locations with it aimed at about 165 to 170 degrees magnetic. Use the signal strength indicator of a TV to help you or the diagnostics screen on the TiVo if the Bolt has that feature. Don't drill any holes yet.

If ION is important to you, it is in a different direction and will require a separate antenna with a custom combiner.
That is a valid point, but the CM-4228HD will also receive High VHF in strong signal areas, and actually performs very well in suburban Atlanta. Local installers including Dow Electronics reliably recommend it. And WXIA has a strong signal for High VHF, and one of the higher power levels on RF10. Of course attic installs can have their own issues and complications. Optimal placement and adjustments may be necessary.
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post #3546 of 3546 Old Today, 06:51 PM
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Thank you much for all the feedback and suggestions, sounds like a roof mount is the way to go.


Quote:
Originally Posted by holl_ands View Post
BTW: WATC (Ch41) is ALSO in the opposite direction...but it's so strong it's likely to come in anyway...although MULTIPATH COULD be excessive....so try up to +/- 20-deg pointing angle away from 168-deg (re True North).
Certainly you are more experienced than me in this area, so forgive the dumb question. Are you saying to get a movable directional antenna or just advising that I move the antenna I suggested +/- 20 degrees to find the optimal reception point?
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