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San Francisco, CA - OTA - Page 326

post #9751 of 10433
Quote:
Originally Posted by Larry Kenney View Post

Where is "Toast0's garage" located and what's he using for an antenna?

Larry
SF

I've added a note to the index page; I'm using a CM 4228 HD, and I'm near Bascom and West San Carlos.
post #9752 of 10433
Quote:
Originally Posted by toast0 View Post

I've added a note to the index page; I'm using a CM 4228 HD, and I'm near Bascom and West San Carlos.

The reason I was wondering where you were and what you were using for an antenna is that you have several stations from Sacramento/Stockton listed. The transmitters are 65 miles from here so have to be a good 100+ miles for you. Your system is working well!

Larry
SF
post #9753 of 10433
Quote:
Originally Posted by Larry Kenney View Post

The reason I was wondering where you were and what you were using for an antenna is that you have several stations from Sacramento/Stockton listed. The transmitters are 65 miles from here so have to be a good 100+ miles for you. Your system is working well!

Larry
SF

Hmm... I'm not actually picking up KVIE or KOVR at useful level; so I've removed the callsigns; I must have gotten a little too excited when I was adding the callsigns. I do scan on all the channels, just to see what's out there, but the ones that don't have a usable signal get put at the bottom of the drop down (except for RF37, which could be of more interest). My LG tv is sometimes able to get a signal lock on KVIE, but it's not watchable. So really, I just get most of the immediate bay area, plus KRCB; from the immediate pay area, I'm missing KDTS, and KTNC and KMMC are iffy.
post #9754 of 10433
Thanks for the update, Toast. I'm not surprised by the unreliable reception from Walnut Grove. Signals here vary a lot on those stations. Only KMAX and KQCA are reliable enough to rely on. The rest are there sometimes, not there other times.

I just got a used HDHomeRun! It arrived in the mail today and I spent the afternoon setting it up, downloading the software, etc. It's working great! I can even access it on my Android phone!

One thing I was surprised to see is the bandwidth usage by each station. KPIX and KBCW with just one channel are each using about 18 MHz, but the others are much lower. It's interesting to see how KGO splits their space between 7.1 and 7.2. If 7.1 doesn't need bandwidth, 7.2 uses it, but 7.1 has priority.

I think I'm going to have a lot of fun with my new "toy".

Larry
SF
post #9755 of 10433
Quote:
Originally Posted by Larry Kenney View Post

New sub-channel found today: KTLN 68.4 Cool TV
Larry
SF

Thanks,... checking that out. No EPG .... Music videos like the "old" MTV ? Thecooltv

Ugh ..... Moving the antenna for only that one channel.eek.gif Nothing else at that transmitter location. KTVJ ? nothing.
That station has a weak signal here ..... But it's very easy to get..... Minimal multipath.

Also checking out France-24 .... on 60-2
Zuus country is cool ...... 28-15
post #9756 of 10433
Quote:
Originally Posted by Calaveras View Post


I bookmarked this so I can check when I see this sort of thing in the future.

Chuck


Hi,

 

My memory finally worked, Toast0's change channel has a starting date/time!

 

Here is the chart for KQED Aux Antenna usage, it shows the square wave the best, KRON and KPIX also.

 

Try entering the following start and end.

 

2013-09-24T17:00:00-07:00

2013-09-27T17:00:00-07:00

 

SHF

 

post #9757 of 10433
I haven't seen conditions as bad as they were today for a long time. All of the Walnut Grove channels were below the cliff edge for several hours this afternoon, and stations from the South Bay and North Bay were down by several dB as well. KTNC from Mt. Diablo was right at it's regular level though.

As of midnight KQCA 58 had come back up above the cliff edge, but all of the other Walnut Grove stations are still out.

Larry
SF
post #9758 of 10433
Larry,

I e-mailed you a day or two ago, have you not gotten it?

- Trip
post #9759 of 10433
Quote:
Originally Posted by Larry Kenney View Post

I haven't seen conditions as bad as they were today for a long time. All of the Walnut Grove channels were below the cliff edge for several hours this afternoon, and stations from the South Bay and North Bay were down by several dB as well. KTNC from Mt. Diablo was right at it's regular level though.

As of midnight KQCA 58 had come back up above the cliff edge, but all of the other Walnut Grove stations are still out.

Larry
SF

Yeah, not so good in the North Bay either. I was having drop outs on KPIX 5 last night. Had to use my Dish channel....
post #9760 of 10433
Quote:
Originally Posted by Trip in VA View Post

Larry,

I e-mailed you a day or two ago, have you not gotten it?

- Trip

Yes, I received it, but haven't had a chance to get back to you. Too busy playing with my HDHR. smile.gif I'll write soon.

Larry
post #9761 of 10433
Okay. Enjoy it! smile.gif

- Trip
post #9762 of 10433
Whatever was causing the signals to be so lousy yesterday has passed and conditions were back to normal this afternoon and evening.

Was KGO's translator off the air? I was getting a very good signal from KCRA 3 today.

Larry
post #9763 of 10433
Quote:
Originally Posted by Larry Kenney View Post

Whatever was causing the signals to be so lousy yesterday has passed and conditions were back to normal this afternoon and evening.

Was KGO's translator off the air? I was getting a very good signal from KCRA 3 today.

Larry


Hi,

 

I would say YES, I get nothing for KGO RF 35 and Toast's chart starting at ~ 7 PM 11/12/13 says it has no modulation.

 

Big trouble requiring immediate attention. Light up the Bat signal for KGO.

 

SHF


Edited by SFischer1 - 11/13/13 at 7:59am
post #9764 of 10433
More LPTV weirdness....

K15CU on Fremont Peak has submitted an application to flash cut to digital on 15 and become a translator for KMUV. Both stations are at the same location and KMUV has a construction permit for a digital transmitter on RF 21 which they have not acted upon.

I don't see the point.

Chuck
post #9765 of 10433

Hi,

 

KGO RF 35 is back up ~ 4:30 PM 11/13/2013.

 

SHF

 

Edit: At ~ 7:40 PM I am seeing signs that there are problems, that RF 35 may not be usable.

 

2nd Edit: 11:00 PM OK.

 

Receiving RF 7 at the translator may be hard at times due to weather. (Known Problem)


Edited by SFischer1 - 11/13/13 at 11:23pm
post #9766 of 10433
Yes... I can tell that KGO 35 is back. KCRA 35 is gone. smile.gif

Larry
post #9767 of 10433
Quote:
Originally Posted by Larry Kenney View Post

Yes... I can tell that KGO 35 is back. KCRA 35 is gone. smile.gif

Larry


Hi,

 

But KGO RF 35 is off the air ~ 10:00 AM 11/14/2013 again.:(

 

Edit: And appears to still be off the air at 11:00 PM 11/14/2013.

 

SHF


Edited by SFischer1 - 11/14/13 at 11:02pm
post #9768 of 10433
KCRA was back again today. smile.gif

Larry
post #9769 of 10433

I won't list all the values but will comment on the exceptions:

- - TV Fool shows KDTS 8 (52) from Mt. Diablo at the top of the yellow zone, but I barely get it. If it gets up to 16 dB SNR it's doing good. Most of the time it's below the cliff edge.
- - They show K02QO 2 from north of Santa Rosa right below KDTS. I've never seen a signal on channel 2.byXwpo

post #9770 of 10433
Okay, I'm confused!

On my indoor antenna, from Sutro I'm getting KOFY just fine with a signal strength of 58% (whatever that means on my TV), KRON at 32%, and KTVU at 40%. But zilch from KPIX, KQED, or KCSM, even though TV Fool says that PIX should be stronger than KOFY, and that KQED and KCSM should be just a little weaker than KTVU.

From San Bruno, I'm getting KKPX but not the supposedly stronger KNTV.

If I change the position of the antenna, I can bring in some of the missing ones, but then I lose others. :-(

What could explain these discrepancies?


Patty
post #9771 of 10433
Each station operates on a different frequency, which causes reflections to vary from station to station. Each frequency reflects differently. You're far enough away from the stations that reflections are causing multipath problems and mixing with the main signal causing cancellation. As you move the antenna around you are picking up different reflections and different paths for the direct signals. Your indoor antenna isn't directive enough to reject the reflected signal and not strong enough to pick up the direct signals better.

You really need an outdoor antenna, or at least one in your attic. That's the only way you're going to solve your problem. An indoor antenna is only reliable close to the transmitter site.

Larry
SF
post #9772 of 10433
Quote:
Originally Posted by kkiidkek View Post

I won't list all the values but will comment on the exceptions:


- - TV Fool shows KDTS 8 (52) from Mt. Diablo at the top of the yellow zone, but I barely get it. If it gets up to 16 dB SNR it's doing good. Most of the time it's below the cliff edge.

- - They show K02QO 2 from north of Santa Rosa right below KDTS. I've never seen a signal on channel 2.byXwpo

You didn't say where you were located, but KDTS has a very weak signal directed right at San Francisco. I'm in the city and I don't receive it reliably with a 10 element yagi. It's in and out, and not very stable. K02QO hasn't moved to their permanent site yet. I think TV Fool is showing their signal for their permanent location, not were they are now. Now they're transmitting with just 300 watts from northwest of Cloverdale. They are supposed to be moving to a higher location near Mt. St. Helena, where KEMO transmits from.

Larry
SF
post #9773 of 10433
Quote:
Originally Posted by wintertime View Post

Okay, I'm confused!
On my indoor antenna,
If I change the position of the antenna, I can bring in some of the missing ones, but then I lose others. :-(
What could explain these discrepancies?
Patty

For starters, moving the indoor antenna near a big window makes a world of difference in performance.
The signal "size" on each channel is different. The lower the channel, the bigger the signal size is.
So a small antenna can pick up channel 51 but not channel 2.

That is the main reason some people have problems with channel 7
For people that have antennas with metal elements cut - sized around 3 feet. (Outdoor antennas) smile.gif Channel 7 comes in with ease.
So pull the "Rabbit ear" elements out something like 16 inches on each side for the higher VHF tv channels like 7

Some modern antennas don't have metal "Rabbit ear" elements to pull out, and unfortunately don't pick up the full band of tv channels correctly.
In that case, the antenna would need to be replaced with one that works.
You can't compress large tv signals (VHF) into small UHF antennas. No matter what marketing buzzwords are used. such as cool.gif "Digital Antenna" 1080, ECT.


For indoors I would use models such as a "Double bowtie" or copycat designs by various manufacturers. (Does the plastic moho leaf have that double bowtie design embedded in the plastic ? )
You can also get creative by removing the "K" type reflectors from large outdoor UHF yagi antennas ..... thus making them "flat" antennas with still respectable gains.
The flat yagi antenna can then now fit under a bed, or in the attic. etc. ..... (Still way much better than any indoor type model)
post #9774 of 10433
Thanks for the explanation, Larry!

I can live with this because I usually watch cable, so I'll just reposition the antenna if I'm desperate to see a different station OTA. :-)
post #9775 of 10433
I noticed last night that KRCB has NHK News on 22.3 now instead of KRCB-FM.

Larry
post #9776 of 10433
I couldn't sleep the night before last so was up tuning around on the TV. For a long period of time from 2:30 to 3 am, KNTV had no audio on 11.1. Cozi TV on 11.2 was fine. Isn't anyone monitoring the off-air signal there?

Larry
SF
post #9777 of 10433
As recently as 2001, KQED and some other stations would "sign - off " at 1 am. Complete with an american flag, and some type of patriotic music ..... before they would turn off the signal.

Then came those "Famous" overnight rolleyes.gif info-mercials.

You know, ....... the "Ronco" stuff .... (He made everything) ..... That (Now defunct) south bay Dodge dealer......... The " Time Life " Music collections ........ The save the children funds........ ETC.


I can only guess what KNTV has on at 3 am eek.gif ..... We have twitter, facebook, and youtube now..... Do you really think the employees are watching a "NBC" station at 3 am ? ..... LOL
...... In theory they are "Signed-off" for the night.smile.gif
NBC is not the powerhouse station it used to be.
post #9778 of 10433
They were airing a re-run of the previous morning's 9 to 10 am "Today" show.

World News Now on ABC isn't bad at 3 am.

I ended up watching a "Thriller" episode on MeTV.

Larry
post #9779 of 10433

Hi,

 

Is KTNC RF 14 Virtual Channel 42 off the air? (9:15 AM 11/21/2013)

 

I had to turn the power off to install a GFCI and when I powered back up it is gone.

 

Has there been any more correspondence on KTNC's move to Sutro?

 

SHF

post #9780 of 10433
I was not able to receive KTNC so I checked them on the spectrum analyzer and discovered their signal is 30 dB weaker than average which means they're running 12 watts ERP. smile.gif

No news on a KTNC move to Sutro tower.

Chuck
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