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Jeff_DML
Advanced Member
Username: Jeff_dml
Post Number: 832
Registered: 11-2004
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 12, 2010 - 12:02 pm: | 
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currently have a CM4221 installed on the roof, we get 8 and 10 with it but I would like to improve it. Trying to decide between antennacraft y5 or y10-7-13 and use a combiner with the 4221?
I work in sorrento valley so close to Mt Soledad but I am actually in the valley so no line of sight. Below is tvfool reports double edge diffraction for them. I am worried about multipath so thinking y10 being more directional is the better choice or do you think y5 should be ok?
Here is the link for the tvfool report:
http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3db32b5acd0272c0
thanks
Jeff |
Micawber
Advanced Member
Username: Micawber
Post Number: 198
Registered: 11-2005
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 12, 2010 - 04:49 pm: |
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My philosophy is bigger is always better. It is much easier to put a cheap pad in if signals are too strong than it is to replace a smaller one because it doesn't cut it. Of course, the higher gain means more of a problem aiming it if you do not have a rotator.
(Message edited by Micawber on January 12, 2010)
99.5% Dark Matter
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HDTV@92120
Advanced Member
Username: Hdtv92120
Post Number: 191
Registered: 03-2004
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, January 12, 2010 - 08:10 pm: |
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Pre-digital transition I used to work near El Camino and Carmel Valley Road. We used a CM4228 on the top of a 4 story building. I was able to find a sweet spot that got all of the major locals including XETV.
It's hard to predict what will work when you're in a valley. The larger antenna will help to reject unwanted ghosting.
But since you already get 8 & 10 I suspect the smaller antenna will work.
I believe that you might find this link to be helpful.
http://www.hdtvprimer.com/ANTENNAS/comparing.html
Samsung PN50B650 / Sony KP-57HW40 / Sony KD-30XS955 / Sony KDL-32SL130 / Panasonic TC-26LX20
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Gary Stigall, XETV
Moderator
Username: Garys
Post Number: 558
Registered: 12-2002
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, January 13, 2010 - 11:37 am: |
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What they say.
You would do well to walk around a bit to find XETV. Use an antenna on a piece of PVC pipe or antenna mast and look for the strongest signal on 23. Move slowly if you are using the TV's built-in BER meter or readout. Or use an old analog TV, look for channel 45 or 57, and try for the best reception. Check for 23 (6-1). All the desired UHF channels should work there.
Don't worry so much about multipath. The newer sets have pretty sophisticated equalizers that overcome multipath. In town, you should even be able to use a little whip or exterior rabbit ears.
Gary Stigall
Dir. of Engineering
Bay City TV - XETV
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Jeff_DML
Advanced Member
Username: Jeff_dml
Post Number: 833
Registered: 11-2004
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, January 20, 2010 - 03:11 pm: |
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finally got the y10 in today at work, wow it is big |
Jeff_DML
Advanced Member
Username: Jeff_dml
Post Number: 836
Registered: 11-2004
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 03, 2010 - 10:28 am: |
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Installed the y10 on monday and it was sort of a semi-failure. See attached pics for the setup, sorry for the bad quality, I used my older cell phone camera.
As you can see from my tvfool link, I have no line of sight to Soledad. In one of the below pics you can see I am deep in sorrento valley and I have a big hill in the way. The reason I went with the y10 is because I wanted something a directional as possible to help with multipath. When I was up on the roof, I could rotate the y10 180 degree and it barely affect the signal readings I got from my usb tuner which I did not expect. My guess is that I am so close to Soledad and no line of sight that I am just saturated with signals from almost all directions? I ended up just pointing it at the direction tvfool told me and left it as be. Tthe ATSC tuner I am using fro development does not like the signal I am getting from 8 and 10 but my USB tuner and the Sharp TV is ok.
Any suggestions? Am I pointing the antenna the wrong direction:-O
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General over-the-air (OTA)