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Guest Message by DevFuse

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OTA it worked for me...


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12 replies to this topic

#1 OFFLINE   houskamp

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Posted 22 January 2007 - 07:47 AM

If you found a way to get your OTA to work or improved it please post it here... please don't post 'didn't work for me'... just trying to create a list of things to try...

On mine a pair of FM traps did wonders.. as well as playing with the aiming

AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


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#2 OFFLINE   kaminsco

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Posted 22 January 2007 - 07:57 AM

If you found a way to get your OTA to work or improved it please post it here... please don't post 'didn't work for me'... just trying to create a list of things to try...

On mine a pair of FM traps did wonders.. as well as playing with the aiming


What are FM Traps?
Directv since 1994
XM since 2005


HR20-700S (both BBC's hooked up) - Sony KDL40V2500, 1080p (via HDMI)- Sony DAV-DX375 Home Theater
R15-500
RCA DRD102RW (orginal 13 year unit)
AU9 Slimeline 5 LNB Dish
Some type of multiswitch on the roof
OTA Antenna in the Attic

Retired: Hughes Directivo HDVR2 - 40, 2nd RCA DRD102RW, (2) dual LNBs and a wonderful 18" dish with a faded RCA logo.

#3 OFFLINE   houskamp

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Posted 22 January 2007 - 08:03 AM

What are FM Traps?


small box with 2 f connectors blocks fm band.. I was getting blown out of the water by a local fm station...

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  • traps.jpg

AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


#4 OFFLINE   kaminsco

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Posted 22 January 2007 - 08:20 AM

small box with 2 f connectors blocks fm band.. I was getting blown out of the water by a local fm station...


Sounds great, where do you get them and why two (a pair)?
Directv since 1994
XM since 2005


HR20-700S (both BBC's hooked up) - Sony KDL40V2500, 1080p (via HDMI)- Sony DAV-DX375 Home Theater
R15-500
RCA DRD102RW (orginal 13 year unit)
AU9 Slimeline 5 LNB Dish
Some type of multiswitch on the roof
OTA Antenna in the Attic

Retired: Hughes Directivo HDVR2 - 40, 2nd RCA DRD102RW, (2) dual LNBs and a wonderful 18" dish with a faded RCA logo.

#5 OFFLINE   houskamp

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Posted 22 January 2007 - 08:23 AM

Sounds great, where do you get them and why two (a pair)?


those came from radio shack.. had that much interference..

AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


#6 OFFLINE   aramus8

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Posted 22 January 2007 - 04:43 PM

If you found a way to get your OTA to work or improved it please post it here... please don't post 'didn't work for me'... just trying to create a list of things to try...

On mine a pair of FM traps did wonders.. as well as playing with the aiming


You are entirely correct. I turned the FM trap on in my amplifier several weeks and increased my signal to noise ratio significantly. I live way too close to one of those top secret military bases and god only knows what they were using, but it definitely interfered at times without the FM trap.

#7 OFFLINE   houskamp

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Posted 22 January 2007 - 06:29 PM

ok no one want to post here so I will go steal as many posts as I can...

http://www.dbstalk.c...06&postcount=77

Everytime I would do a download of new release candidates, I would go through and redo my OTA antenna setup, but I would NOT retype my zip code...

After reading this post, I redid the setup and RETYPED my zipcode..
MY ext 771 ISSUES ARE HISTORY!!!!!

EVEN channel 2-1!!!!

If anyone from DTV is reading this, you need to program the receiver to delete the zipcode from memory in OTA when a RBR is done, so that the user needs to retype it...


Mine is super-sensitive compared to my old 10-250. I no longer need a signal booster or fancy antenna. In fact, I'm using nothing more than rabbit ears now. And have been watching both games today (sorry, both football games) while the local antennas are socked in by a high-altitude snow storm (Albuquerque - our local antennas are all on a moutaintop.) This is with 10b release.

According to the website that I can't recall - sorry - I'm too far from that mountain for rabbit ears, indoor anything, to work. And it didn't before, or not well.

I'm posting this to encourage comments from others as to whether or not OTA is degrading per releases ... I'm not a representative sample. Apologies in advance if this sort of post is too touchy-feely - not my intent. If you're having hardware problems coincidental with releases you should find that out. If I'm to expect OTA degradations for some software reason, I need to find that out and prepare for it.


I have done a little bit of testing with OTA signal levels, antenna aiming, etc. What I have found is that reflected signals (multipath) seems to make a much greater difference than basic signal strength.

I have an outdoor antenna, which has a pretty narrow beamwidth (very directional). Moving it just a tiny amount in azimuth (perhaps 1 or 2 degrees) can make a digital station go from 100% signal strength to 0% signal strength.

On the other hand, attenuating the signal has almost no effect on how well it works. I added various levels of attenuation, from 3db to 32db. I saw no degradation of performance until I got all the way to 32db, where I lost one station (the farthest, about 28 miles away). 32db attenuation is like 0.00063
of the original signal level (1/1580 th).

Then, as a final test, I removed the external antenna altogether and stuck a paper clip in the OTA antenna jack of the HR20, and got just about the same performance as I did at 32db attenuation.

Carl


AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


#8 OFFLINE   bonscott87

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Posted 23 January 2007 - 07:54 AM

If you found a way to get your OTA to work or improved it please post it here... please don't post 'didn't work for me'... just trying to create a list of things to try...

On mine a pair of FM traps did wonders.. as well as playing with the aiming


I'm assuming this didn't solve the WWMT channel 2/3 thing, did it?

#9 OFFLINE   houskamp

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Posted 23 January 2007 - 07:59 AM

nope thats in the box it's self...

AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


#10 OFFLINE   brittonx

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Posted 24 January 2007 - 12:18 AM

If you found a way to get your OTA to work or improved it please post it here... please don't post 'didn't work for me'... just trying to create a list of things to try...

On mine a pair of FM traps did wonders.. as well as playing with the aiming


Houskamp,

Thanks for pulling this one together. Hopefully this will help people.

#11 OFFLINE   houskamp

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Posted 30 January 2007 - 07:18 PM

bump

AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


#12 OFFLINE   houskamp

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Posted 21 February 2007 - 06:54 PM

bump

AKA: SMOKE
MRV was all that's left on my wishlist (wishlist done) :D


#13 OFFLINE   tucker301

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Posted 22 February 2007 - 10:46 PM

When we set up our rooftop OTA, we had some weird stuff going on.

For where I'm located, I wanted to aim the directional for the best signal from the RDU stations, which are about 70 miiles South of me.

Trying to get the right aim proved to be a challenge.

Using two walkie talkies one of us would slowly rotate the mast while the inside man relayed updatse on signal quality.
Problem was, every time we thought we had it, and talked to each other to acknowledge the progress, the signal dropped out completely.

We're just country folk here, so it took us a few rounds to figure out that the walkies were killing the signal every time we keyed them. :grin:

Wanna PO a neighbor or a "friend" who's watching UHF OTA?
Get one of these and setup outside his house when the big game's on!

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