jras20
rimember
 Offline
Posts: 4036
Radio, DX, Linux boots
|
 |
« on: April 14, 2012, 09:49:52 AM » |
|
I'm thinking of getting a TV splitter amp for DTV, but my main worry about this is will it get to hot if its on all the time in the attic? All of my cords and 4 way splitter is up in the attic. I would like to pull in LDTV at a better signal.
|
|
|
|
|
Logged
|
Dance music, computers FM radio DX Radio in general.
|
|
|
BoardReader
rimember
Offline
Posts: 9
|
 |
« Reply #1 on: April 14, 2012, 08:05:50 PM » |
|
I've used them in attics in several locations and they seem to survive the heat. Of course try to put it where it might get any airflow and not buried in insulation or up against the roof. I've never lost one from heat but I've lost a couple after nearby lightning strikes.
|
|
|
|
|
Logged
|
|
|
|
willdav713
rimember
Offline
Posts: 1397
|
|
« Reply #2 on: April 15, 2012, 03:14:05 AM » |
|
I'm thinking of getting a TV splitter amp for DTV, but my main worry about this is will it get to hot if its on all the time in the attic? All of my cords and 4 way splitter is up in the attic. I would like to pull in LDTV at a better signal.
Are you running RG-59, RG-6U, or RG-6 Quad Cable? I would run all the coax with RG-6 Quad up to the antenna. Keep in mind when you split the signal you lose a great amount even with an amp. I tried to place my antenna in the closet but made reception worse. So I ended up with all my TV's hooked up to an HD Antenna. Could get 7-1 in one run, but 18-1 forget about it and vise versa for the other rooms using RG-6 U Coax. In the living room I have RG-6 but the built in cable jacks in the bedroom are RG-59. It's an apartment so I can't just tear down the wall and start dropping cable feed. In order to do so, I would have to use my drywall saw and cut a big hole into the ceiling. I thought about doing it, but the cost of repairing it and the time it would take to fix it right would be more than buying antenna's for each TV set. And since I live down a steep hill, it probally would'nt make much difference. |
|
|
|
|
Logged
|
Proud owner of a SANYO DCX-2700K Quadraphonic Receiver, SONY SQ Decoder, DX good music to Magnavox DVD Recorder.
Favorite Stations: 590 KLBJ-AM, Music Choice Channels 807,808,823, and 824 Austin
Still missing Austin's Greatest Hits! Jammin 103.1
Likes: 103.5 BOB-FM 9@9, True Oldies Channel
|
|
|
Greg Branch
rimember
Offline
Posts: 529
|
|
« Reply #3 on: April 16, 2012, 10:39:36 AM » |
|
jras, I would forget about the cheap amp/splitter combos. They generate too much noise. Get a good pre-amp like a Channel Master 7777. It has a separate mast (or attic) mounted amp with an in-line power supply. Because the amp is powered up the center of the coax from the power supply, you have to be careful and not feed the DC into the other 3 TV's via the splitter. You will need to either install the power supply between the amp and splitter, or you can install the power supply at one TV and use DC blocks on the outputs to the 3 other TV's.
|
|
|
|
|
Logged
|
|
|
|
jras20
rimember
Offline
Posts: 4036
Radio, DX, Linux boots
|
|
« Reply #4 on: April 16, 2012, 10:49:01 AM » |
|
Thanks for the suggestions! I will see what I can do
|
|
|
|
|
Logged
|
Dance music, computers FM radio DX Radio in general.
|
|
|
JHBrandt
rimember
Offline
Posts: 955
|
|
« Reply #5 on: April 16, 2012, 01:32:51 PM » |
|
I'd second Greg's suggestion, since you can put the 7777 up on the roof (if that's where your antenna is) and still put its power supply in the attic. This will provide some protection from the heat: although it can get hot on the roof too, there's usually at least a breeze to carry some heat away. Besides, the 7777 is a really low-noise amp and is better than most amplified splitters - even Channel Master's own!
I use a 7777 with a 4-way splitter and still get all the local LP stations (although I sometimes have trouble with channels 25 & 50).
|
|
|
|
|
Logged
|
|
|
|
jras20
rimember
Offline
Posts: 4036
Radio, DX, Linux boots
|
|
« Reply #6 on: April 16, 2012, 02:34:53 PM » |
|
My antenna is about 20 or so feet up, and I have a FM antenna below that antenna, and I have the main line going into the top part of the attic, where I have my 4 way splitter at. It gets extremely hot up there in the hot months of the summer. I sweat like I'm in a shower if I half to go up there to fix something.
|
|
|
|
|
Logged
|
Dance music, computers FM radio DX Radio in general.
|
|
|
fredcantu
rimember
Offline
Posts: 2288
|
|
« Reply #7 on: April 16, 2012, 06:31:06 PM » |
|
Watch out for FM overload. I have an amplified spliter to pick up the San Antonio DTV stations. Unfortunately I have a 100,000 watt FM in the signal path and it was interfering with some channels. An FM trap on the antenna line fixed the problem.
|
|
|
|
|
Logged
|
|
|
|
jras20
rimember
Offline
Posts: 4036
Radio, DX, Linux boots
|
|
« Reply #8 on: April 17, 2012, 07:23:04 AM » |
|
Watch out for FM overload. I have an amplified spliter to pick up the San Antonio DTV stations. Unfortunately I have a 100,000 watt FM in the signal path and it was interfering with some channels. An FM trap on the antenna line fixed the problem.
I remember back in the day of analog TV out in Lavaca county (where I have my setup) I would hear 96.9 in a few TV channels, back then that was one of the strongest channels on FM, and it would be interfering with analog TV reception. I did had a old TV amp that had FM trap and it seemed to fix the problem. |
|
|
|
|
Logged
|
Dance music, computers FM radio DX Radio in general.
|
|
|
Greg Branch
rimember
Offline
Posts: 529
|
|
« Reply #9 on: April 17, 2012, 08:29:06 AM » |
|
The 7777 has a switchable FM trap. As an aside, apparently the 7777 is now new and improved. The "improvement" being that the new models do not have the separate VHF and UHF inputs. Hardly an improvement in my book, but I suppose this is a cost savings for the company, and few people actually run separate VHF and UHF antennas. http://www.channelmaster.com/Television_Antenna_Booster_Preamplifier_CM_7777_s/92.htm |
|
|
|
|
Logged
|
|
|
|
|
