View Full Version : Check your whitespace channels here
midwestdxer
02-24-2009, 03:34 PM
I've been doing some research lately as to how this soon-to-be new technology is going to affect my local reception and future DX possibilities.Finally,after poking around the net for a week,I found a site that's already determined which channels we will be allowed and the ones they're going to use for free,for financial gain.
From here,this looks like a train wreck and there's no adjacent channel protection this far out.
http://www.showmywhitespace.com/
This is what the chart looks like.The ones marked green are just outside the Grade B contours-fair game for these folks.All Louisville DT's now receivable will take a hit,plus my local DMA PBS channels will be fair game.The only protected PBS stations will be from Cincy.Plus,one of my independent favorites WHMB is sucked up also."Sorry,it's ours now".
Bob Cooper thinks there is a glimmer of hope,but I think these people are going for the throat and will let nothing get in their way.
Just what we need...more RF crap.
And, of course, when these devices get interfered with it'll be the Ham Radio operators fault.
73, Ed NN2E
Owner / Operator - Murphy's Law Test Site & Thunderstorm Proving Grounds
cd637299
02-24-2009, 06:35 PM
OK I am not familiar with all this, but this is a good time to ask:
Remember how there were FCC tables of NTSC TV channel allocations that one could see (in my case, in Broadcasting magazine)? You'd see something like
Miami 2+ 4 7- 10+ 17- 23 33+ 39+ 45
Now....will there still be room for added digital channels, once June 12 comes to pass? And, is there a website for these allocations, that is laid out something like is shown above?
cd
midwestdxer
02-24-2009, 10:08 PM
OK I am not familiar with all this, but this is a good time to ask:
Remember how there were FCC tables of NTSC TV channel allocations that one could see (in my case, in Broadcasting magazine)? You'd see something like
Miami 2+ 4 7- 10+ 17- 23 33+ 39+ 45
Now....will there still be room for added digital channels, once June 12 comes to pass? And, is there a website for these allocations, that is laid out something like is shown above?
cd
Yes, there is supposed to be room for more channels,and according to what I've read there's supposed to be a master channel list in a database that will be updated daily by a yet un-named entity.If I had to guess,it will be the fox overseeing the chicken house :eek:
cd637299
02-24-2009, 10:27 PM
Maybe you are saying that there will only be room for more "FOX" affiliates ;)
cd
mrhoover
02-25-2009, 01:58 PM
This doesn't seem very good.
There's a device sold in the UK for sending data/video
round the house via the mains wiring which causes a lot of
problems on shortwave and no doubt with harmonics onto lowband VHF
http://www.frequencycast.co.uk/blog/2008/10/sos-save-our-shortwave.html
http://www.youtube.com/watch?v=8XT99wSm4Gw
Hope nobody clutters up my lowband whitespace,so far ok....
Hugh
Glenn Hauser
02-27-2009, 11:40 AM
Another GIGO service, thank you very much. I searched on an Enid address and found the unavailable channels shown as:
3, 4, 5, 7, 9, 13
15, 24, 29, 31, 32, 33, 37, 39, 40, 45, 46, 50, 51
There is no local or near-local signal, DTV or not, on channel 3, so it is available (tho I wish it were not!!)
It misses the strongest DTV signal on UHF here, KFOR-27!! On the contrary it does list channel 39, which has just been abandoned by KWTV Feb 17 when it went back to 9!! It misses KTBO-14 which remains on analog plus DT-14; as well as KOKH-25 and KOCB-34which are both still running nightlight as of Feb 27.
BTW, KXOK-LP-DT-31 Enid has fixed its remapping so it no longer displays as imaginary channel 12. Glenn Hauser, OK
Waterfallguy59
03-05-2009, 09:05 AM
I tried this web site (http://www.showmywhitespace.com/) and it seems to work ok, but depending on your ISP, it takes a while to refresh the screen when selecting/deselecting individual channels.
I tried this last week and was checking signal ranges for the Great Lakes area and found the Canadian stations were included in these and it showed the range of the signal into Michigan.
This week, it shows the same Canadian stations locations, but no signal ranges. I wonder what happened to remove the Canadian DTV signal ranges ?
Joe
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