View Full Version : So I've set up my Terk HDTVA... I need improvements though!


oksk89
03-04-08, 12:12 PM
I scanned for channels using the Terk first, and got like 13 analog channels and 0 digital; the channels were all significantly grainy, and improved/got worse depending on how I changed the direction (I don't have much leeway for positioning..). After that, I set up the Silver Sensor and only got ONE analog channel. Again, grainy images etc.

So I set up the Terk again, and this time, I got like 13 or so analog again, but 6 digital! I was pleased! But, the analog was still grainy, and out of the 6 digital channels, only 2 out of the 6 worked. The other 4 said "no signal."

The thing is, I live in possibly the worst place on campus to receive reception via antenna. I know that I'll be moving somewhere better next fall semester so I'm wondering whether I should just keep the Silver Sensor just in case. Money isn't really that big of an issue, as it's less than $20. The one thing that does make me want to return it, though, is the fact that it's UHF only. So this is just a minor question: should I return the Silver Sensor? Is it pretty much hopeless for me, given that I only got ONE analog channel, whereas the Terk got 13 analog and 6 digital?

Now, since I'm using the Terk right now, are there any methods on improving the reception? I purchased a Philips DVDR3575H through eBay and it should be shipping soon. So I guess I can rely on analog cable for now (since its tuner is ATSC/NTSC) until I move to a better place next year.

Any suggestions?


* yellow
vhf WHDH-DT 7.1 NBC BOSTON, MA Feb 17, 2009 (post-transition) 231° 8.3 7
red
vhf WGBH 2 PBS BOSTON, MA 236° 9.1 2
* red
uhf WGBH-DT 2.1 PBS BOSTON, MA 236° 9.1 19
red
uhf WGBX 44 PBS BOSTON, MA 236° 9.1 44
* red
uhf WGBX-DT 44.1 PBS BOSTON, MA 236° 9.1 43
red
vhf WHDH 7 NBC BOSTON, MA 231° 8.3 7
red
vhf WBZ 4 CBS BOSTON, MA 236° 9.1 4
* red
uhf WBZ-DT 4.1 CBS BOSTON, MA 236° 9.1 30
red
vhf WCVB 5 ABC BOSTON, MA 236° 9.1 5
* red
uhf WCVB-DT 5.1 ABC BOSTON, MA 236° 9.1 20
* red
uhf WHDH-DT 7.1 NBC BOSTON, MA 231° 8.3 42
red
uhf WBPX 68 ION BOSTON, MA 171° 4.7 68
red
uhf WSBK 38 IND BOSTON, MA 230° 8.8 38
red
uhf WNEU 60 TEL MERRIMACK, NH 344° 46.3 60
red
uhf WZMY 50 MNT DERRY, NH 343° 26.5 50
red
uhf WMFP 62 SAH LAWRENCE, MA 154° 4.6 62
red
uhf WFXT 25 FOX BOSTON, MA 230° 8.8 25
* blue
uhf WMFP-DT 18.1 SAH LAWRENCE, MA TBD 232° 8.8 18
* blue
uhf WZMY-DT 35.1 MNT DERRY, NH 343° 26.5 35
blue
uhf WLVI 56 CW CAMBRIDGE, MA 230° 8.8 56
* blue
uhf WLVI-DT 56.1 CW CAMBRIDGE, MA 230° 8.8 41
blue
uhf WUTF 66 TFA MARLBOROUGH, MA 280° 19.1 66
blue
uhf WPXG 21 ION CONCORD, NH 4° 54.6 21
* blue
uhf WSBK-DT 38.1 IND BOSTON, MA 236° 9.1 39
blue
vhf WMUR 9 ABC MANCHESTER, NH 344° 46.3 9
* blue
uhf WBPX-DT 68.1 ION BOSTON, MA 232° 8.8 32
blue
uhf WFXZ-CA 24 BOX BOSTON, MA 232° 8.8 24
* blue
uhf WHDN-DT 26 IND BOSTON, MA TBD 153° 4.7 26
blue
uhf WTMU-LP 32 TEL BOSTON, MA 171° 4.7 32
* blue
vhf WENH-DT 11.1 PBS DURHAM, NH Feb 17, 2009 (post-transition) 10° 53.2 11
blue
vhf WENH 11 PBS DURHAM, NH 10° 53.2 11
* violet
uhf WMUR-DT 9.1 ABC MANCHESTER, NH 344° 46.3 59
* violet
uhf WYDN-DT 47 DAY WORCESTER, MA TBD 232° 8.8 47
* violet
uhf WNEU-DT 60.1 TEL MERRIMACK, NH 344° 46.3 34
violet
uhf WUNI 27 UNI WORCESTER, MA 276° 30.8 27
* violet
uhf WFXT-DT 25.1 FOX BOSTON, MA 230° 8.8 31

oksk89
03-04-08, 09:52 PM
BUMP!

Help me out here, please!

raouliii
03-04-08, 10:56 PM
Did you point the antenna in the correct direction? Did you experiment with pointing the antenna in other directions? Is the correct direction towards the exterior of the building or towards the interior? What is the building made of? Masonry?

oksk89
03-04-08, 11:08 PM
I'm currently pointing it towards my room's window. I do not know if this the correct direction, as I have no compass to measure which direction is how many degrees etc.

I went to an analog channel and moved my antenna in all sorts of directions, and the best reception I get is when it's pointing at the window. Nevertheless, the quality is still unwatchable. I'm not too concerned about getting all the analog channels, I just want the HD channels, as I have the Philips DVDR3575H on the way to watch analog cable through my room's cable outlet.

My building is just a regular brick building with cement walls. I literally live in the worst possible location on campus. My campus is on a hill, and I'm at the way bottom of it. Surrounding me are buildings, the hill, and so many obstacles.

Now that I tink about it, I don't even know why I'm asking. I probably won't be able to point my antenna at a satisfactory angle.

F**k! lol

bbfn11
03-04-08, 11:14 PM
Just a suggestion! Have you thought about connecting an amplifier to your antenna? You mention grainy images in your signals which might indicate poor reception.

raouliii
03-04-08, 11:18 PM
It might be worth the effort to determine which direction is west-southwest ~235deg.

kousikb
03-04-08, 11:42 PM
I too have the HDTVa. Couple of checks.. I would assume that you have covered them already.. in case you didn't
1) Ensure that the amplifier is connected to the antenna and it's powered on.
2) I see that lot of your channels are VHF, so you need to extend the dipoles to get maximal VHF reception. Also, try out the the directions and try different positions with the same angle.
For me, I tried the same angle in different positions and got the optimal positions to get all the digital channels including the HD ones. Now a days I am even getting channels which I don't get during fall/winter. See my setup using HDTVa in my signature.

oksk89
03-05-08, 01:30 AM
The thing is, even if I did find out which direction is optimal, it's pretty useless because I'm surrounded by walls and every obstacle imaginable. I'll just rely on my DVDR for analog and use my HDTVa next semester when I'm hopefully in a better location.

mikemikeb
03-05-08, 02:23 AM
How about placing the antenna directly by the window, and running an RG-6 cable to the TV tuner?

raouliii
03-05-08, 08:11 AM
....Any suggestions?...
BUMP! Help me out here, please!
Did you point the antenna in the correct direction? Did you experiment with pointing the antenna in other directions? Is the correct direction towards the exterior of the building or towards the interior? ....
I'm currently pointing it towards my room's window. I do not know if this the correct direction, as I have no compass to measure which direction is how many degrees etc......
It might be worth the effort to determine which direction is west-southwest ~235deg.
The thing is, even if I did find out which direction is optimal, it's pretty useless because I'm surrounded by walls and every obstacle imaginable......
How about placing the antenna directly by the window, and running an RG-6 cable to the TV tuner?
I suggest you either give up on OTA, your only HD option, completely or make the effort to improve your situation by actually trying the suggestions you asked for. You will HAVE to experiment with the antenna location and orientation. Come on, your in college and you can't even make a decent guess as to compass directions.:rolleyes:

Scooper
03-05-08, 09:36 AM
Compasses aren't THAT expensive, even on a college students budget...

DanHuff
03-05-08, 11:09 AM
Get rid of the Terk and use a coat hangar for a "HDTV" antenna.

Works just as well!!

serndipity
03-05-08, 11:19 AM
See thread (from this past weekend)

http://www.avsforum.com/avs-vb/showthread.php?t=1001981

He has a outet in the room, that has either a master TV antenna or cable signal and a TV capable of ATSM and QAM reception.

Go figure.....when I was in college, I didn't have too much time on my hands.

Falcon_77
03-05-08, 11:36 AM
Google Earth is a very useful tool to find out the correct direction, though you will want to DL the transmitter icons from TV Fool first. Then a line can be drawn to the tower and you can use local landmarks to find the correct direction.

The Silver Sensor is going to be of limited utility next year, being a UHF only antenna. It is a very poor performer for upper VHF 7-13, which is where 4 Boston DTV stations will be moving to next year.

Does Phillips, etc. have any plans to add rabbit ears to this UK import (like Terk did)?

oksk89
03-05-08, 12:27 PM
I figured I can't really do much about my situation right now with the antenna. I'll just use the antenna next year when I'm in a much better location, because right now, I'm literally in the worst dorm, worst floor, and worst possible room to get reception. I should be grateful that I got reception, if anything.

Rammitinski
03-05-08, 01:21 PM
Still, it might make some difference if you'd place it in the window, rather than pointing at it from across the room, assuming that really is in the direction of the towers, which you can easily find with a 2-dollar car compass from an auto parts store.

Have you even tried any of the suggestions yet? It never comes that easy from indoors. You usually have to at least work at it a little.

fbov
03-05-08, 04:58 PM
oksk89,
You got 10 strangers to suggest things you could do to help yourself ...

Make that 11 - try a real antenna.

Not to denigrate these stamped metal LPDAs, (You've got two of the same thing in my book.) but they have no gain.
http://www.hdtvprimer.com/ANTENNAS/comparing.html

Especially in a dorm room, I'd send these folks $25 plus shipping for a CM4221 (yeah, I'm growing fond of this thing.). It's not pretty, but it'll give you 4x more gain than you've got and works with/without it's reflector.
http://www.warrenelectronics.com/antennas/4221.htm

Hang it on a non-metal wall and you might be surprised.

Have fun,
Frank

csgamer
03-05-08, 10:13 PM
oksk89,
You got 10 strangers to suggest things you could do to help yourself ...

Make that 11 - try a real antenna.

Not to denigrate these stamped metal LPDAs, (You've got two of the same thing in my book.) but they have no gain.
http://www.hdtvprimer.com/ANTENNAS/comparing.html

Especially in a dorm room, I'd send these folks $25 plus shipping for a CM4221 (yeah, I'm growing fond of this thing.). It's not pretty, but it'll give you 4x more gain than you've got and works with/without it's reflector.
http://www.warrenelectronics.com/antennas/4221.htm

Hang it on a non-metal wall and you might be surprised.

Have fun,
Frank

I just got a cm4221 and have it attached to a lamp post, ugly as hell, but works, lol. Previously, i tried using the radio shack 15-1892 and picked up 16 channels, now with the cm4221 hanging off a lamp post i am picking up around 33 channels.

Hmm, you say hang it on a non-metal wall? The lamp post i attached the cm4221 to is metal, will that effect my signal?

Falcon_77
03-06-08, 02:29 AM
I just got a cm4221 and have it attached to a lamp post, ugly as hell, but works, lol. Previously, i tried using the radio shack 15-1892 and picked up 16 channels, now with the cm4221 hanging off a lamp post i am picking up around 33 channels.

Hmm, you say hang it on a non-metal wall? The lamp post i attached the cm4221 to is metal, will that effect my signal?

A vertical metal rod of 1 1/2", etc. won't be of much concern. After all, most antennas are mounted on metal masts. Avoid horizontal metal rods in the path of the signal when possible, however.

A wall with metal siding, extending to more than several inches horizontally and in the path of the antenna (or just behind it), is another story. Stucco or other metal siding will greatly diminish usable signals.

oksk89
03-06-08, 02:33 AM
I'm trying to decide between the DB2 and the CM 4220. They're pretty much the same thing, except the DB2 is about 10 bucks more expensive. The CM 4220 claims, however, that it can get channels 7-14 within 20 miles, and then 14-69 within 30 miles. The DB2 only claims 14-69, however. So the DB2 is more expensive, but doesn't seem to get channels 7-14. PLus, I have channels in that 7-14 range broadcasting within 20 miles of my location, so it actually matters.

Regardless, the DB2 seems to have better reviews on amazon.com. I can't find a direct comparison between the two, though. Any insight, guys?

fbov
03-06-08, 09:00 AM
For objective antenna comparisons, look here under "net gain":
http://www.hdtvprimer.com/ANTENNAS/comparing.html

There are two 2-bays, DB-2 and Radio Shack, but all three 4-bay and 8-bay (Channel Master, Antennas Direct and Wineguard) so you can compare the DB-4 and 4221 in the absence of a 4220. These antennas are modular so the 2- to 4- to 8-bay changes are similar among the three, driven by geometery of bay placement and connection.

Regardless, the 2-bays come in only a couple dB better than a Silver Sensor, so don't expect much change at the tuner switching to one of them.

fbov
03-06-08, 10:05 AM
Here's another thought. Before buying something that might not work, do some testing. The beauty of the 4-bay bowtie is its simplicity - you can make one with a 2x4, coat hangers and a sheet of aluminum foil. (There are nicer examples, too.)
http://www.avsforum.com/avs-vb/showthread.php?t=798265

Try it out to see if it works; it may hold you until you're out of school, or move where the little LPDAs work.

oksk89
03-06-08, 12:26 PM
Well, the reason why I'm set on the DB2/CM4220 is that the main channels I want are within the 30 mile range. Plus, my friends and I just did the housing lottery for next year and we got a really nice 4-person suite on the 4th floor of a dorm building.

After careful and extensive research using antennaweb and my school's academic map, I would have to point my antenna towards the walls inside my suite to get the correct angle.

This building I'm living in is made out of regular brick and mortar. Will this affect reception strength?

fbov
03-06-08, 01:31 PM
Back to my initial response - if the Silver Sensor isn't working today, that tells you something about your antenna needs. The antenna comparison tells you a 2-bay is only a couple dB better and your housing lottery tells you you're in a far better place next year. I'd wait until I was on the 4th floor before replacing the Silver Sensor!
Frank

PS brick and mortar are better than roofing material for attenuating TV signals and a roof is good for -20 to -30 dB! You were right about living in the worst place on campus!