OTA Signal Measurements

Reception, channel detection, network issues, CableCARD setup, etc.
jasonl
Silicondust
Posts: 13036
Joined: Sun Oct 28, 2007 9:23 pm

Re: OTA Signal Measurements

Postby jasonl » Tue Oct 09, 2018 1:12 pm

I am coming back to my HDHomerun to test the new premium tv on a HDHR Connect. I have used my 4 other tuners (Original and Primes) for years but recently switched to PS Vue and Youtube TV. I updated my Connect to the latest FW and checked the orientation of my Channel Master 8 bay that i have used for years and scanned my channels. I can pull in around 70 channels except for Channel 5 KPHO, Channel 12 KPNX and Channel 11. I dont watch 11, but i noticed it wasnt in the listing either.

All of the transmitters are on the same mountain in basically a line (according to TV fool). I have tried with and without an amp. I have replaced cabling. I have purchased a couple of indoor antennas that were recommended (Mohu / Clearstream) to compare. My outside antenna is about 15' up and i have pulled in these channels before without too much trouble. I have sat with the signal meter and tried to pull in 5 and 12 by repointing the antenna to see if there was any sign of them, but nothing.

KTVK CW 3 18 530 Mhz UHF -- Fine
KPHO CBS 5 18 488 Mhz UHF -- No sign of station
KAET PBS 8 18 180 Mhz VHF-Hi -- Fine
KSAZ FOX 10 18 192 Mhz VHF-Hi -- Fine
KTAZ TELEMUNDO 11 18 560 Mhz UHF -- No Sign of station
KPNX NBC 12 18 S 204 Mhz VHF-Hi -- No sign of station
KNXV ABC 15 18 476 Mhz UHF -- Fine

Not quite sure what tree i should be barking up at this point. The antenna seems fine, almost picked up another tuner to see if that was the issue, whether mine is faulty or the new FW is causing it. I may rummage around for my old original HDHR and see if those stations come in. Any recommendations are appreciated.
Unless you can see the towers from your window, you're going to have trouble with KPHO, KPAZ, KTAZ, and KPPX from 9am-4:30pm M-F and 7am-5pm weekends until the KTAZ work is done (scheduled to be done by 12/31), minus whatever days they schedule off, which are subject to change if weather interferes.

KASW will also have some work coming up to replace their equipment, and that will affect them, KTVK, KNXV, KTVW, and a bunch of radio stations. Their work should be less involved than KTAZ's but will still involve power reductions at various times, so expect some troubles during the day and perhaps also overnight.

scubajwd
Posts: 127
Joined: Fri Aug 23, 2013 10:31 am

Re: OTA Signal Measurements

Postby scubajwd » Mon Dec 17, 2018 8:40 am

Hopes are fading that I can pull in NBC (low VHF); the new ClearStream 4V seems
to be working OK for HI-VHF; I won't have definitive signal quality numbers
on ABC CBS PBS for a few days yet..I'm going to run an experiment putting the 4V on an
extensable pole (telescoping pool pole) and point it directly at the NBC tower..the 4V
should be about 25 feet up at this point ; if I can pull in NBC but not the others in this
orientation then
I'm probably looking at two antennas and a combiner if I want all the major networks;
In case I haven't made this abundantly clear, your local NBC station is not low VHF. It broadcasts on UHF channel 22. Anything you do to try to bring in low VHF will have no impact whatsoever on it. What you do need to try is moving the antenna to various locations. Without line of sight, you're going to have to rely on the signal bending around whatever ridge is between you and the towers. VHF does this better than UHF, so it's easier to get the VHF stations. UHF still does it to a lesser extent, but there are going to be hot and cold spots, and moving the antenna a few feet might make a huge difference, so you're just going to have to experiment to find the perfect spot.
Hi Jason...resurrecting some old questions: yes, our NBC station here is indeed UHF and for me (TVFool) it is a LOS signal to my attic;
it has a NM(db) rating at 70.6 db and is 6.7 miles away as the crow flies; it is at 58 Deg; ABC and CBS are HI VHF and are at 101 Deg and
4 miles away; my antenna is a ClearStream 4V; will I need two antennas in the attic to be able to get all three major networks? If so,
what would you recommend for the UHF (NBC) channel? ; additionally,, how would I combine the antennas
in the attic for optimum signal transmission down to my Connect Duo?.. I'm guessing total cable run not to exceed 100 ft
The ClearStream 4V seems to be OK for the VHF channels..Thanx in advance

jseymour
Posts: 361
Joined: Sat May 12, 2018 8:46 am

Re: OTA Signal Measurements

Postby jseymour » Mon Dec 17, 2018 9:44 am

I've been testing with the https://www.amazon.com/gp/product/B00HS ... UTF8&psc=1
and https://www.amazon.com/gp/product/B07B1 ... UTF8&psc=1
both have proven to be inadequate indoors for VHF HI for my location
Your 2nd link did not work for me. It looks like you meant to point to https://www.amazon.com/s/ref=nb_sb_noss ... B07B1VKXJD

Now, I don't know who "sukses" is, but I would not be reading that as "success", if you get my drift.

Secondly: I tried a Mohu Leaf at my location. It was a complete fail on all VHF-Hi stations.

This is what I've used, in three locations throughout our home: Winegard FlatWave Amped at Amazon. It's worked passably well, even in the corner of the house where it's shooting literally from the the corner of the house that puts the bearing to the antenna farm diagonally through the house to the opposite corner.

I tested one in the basement, a couple years ago. I was able to actually receive a few stations. The one that's on the main TV, in the corner of the house closest to the antenna farm, performs nearly as well as our Winegard HD7078P up on the roof.

Given your stations are close, I don't think I'd go putting a monster antenna in the attic. I might be inclined to try that Flatwave Amped, first. For the attic I think I'd give the RCA ANT751 a go.

This is all assuming you do not, and will not, have any VHF-Lo stations.


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