How would one try and search the DB for a freq range of 730mhz - 745mhz I have a signal here and my meter is showing that range but wont pin point it.. I am guessing possible TV channel?
Database search
- Thread starter Chrome69
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jellotor
Member
williams63
Member
Tafl Search
I use this site 100% of the time , KUDOS to the Author of the site !!
http://neon.polkaroo.net/~darkwing/tafl/
I use this site 100% of the time , KUDOS to the Author of the site !!
http://neon.polkaroo.net/~darkwing/tafl/
jellotor
Member
The only problem with that site is that the records are often incomplete. I believe someone mentioned that he relies on downloads from the Spectrum Direct site.
Your mileage may vary.
Your mileage may vary.
nova1010
Member
Chrome69 said:
You might want to try here too buddy http://sd.ic.gc.ca/pls/eng_alpha/web_search.frequency_input
or here http://sd.ic.gc.ca/pls/eng_alpha/web_search.frequency_range_input
wich results in http://sd.ic.gc.ca/pls/eng_alpha/web_search.frequency_range_results
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pathalogical
Member
williams63 said:
Anyone having difficulty with the above link ? I enter my info, hit enter, and all I get is a 404 error. Been like this the past few days.
Ya , same here.
Clicking on the neon.polkaroo link on the "404" says that the site is experiencing problems or undergoing maintenance.
At least TAFL is still available from IC.
Clicking on the neon.polkaroo link on the "404" says that the site is experiencing problems or undergoing maintenance.
At least TAFL is still available from IC.
That range is TV
57 728-734 - video 729.25
58 734-740 - video 735.25
59 740-746 - video 741.25
60 746-752 -video 747.25
57 728-734 - video 729.25
58 734-740 - video 735.25
59 740-746 - video 741.25
60 746-752 -video 747.25
nova1010
Member
pathalogical said:
Link works for me
nova1010 said:
Sure the site link works.
Now type in any freq. and try and do a search.
Getting anything ?
nova1010
Member
mciupa said:
Sure the link comes up but for some reason when i do my regular search(guelph) nothing comes up....hmmmmm
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For what it's worth, the darkwing site works by downloading the TAFL files monthly and performing a search on them. The actual goverment site is up-to-date daily and has many search options (though still too few for my liking), and can give you LOTS of neat additional info that's not available in the downloaded text files.
I encourage all to use the actual Spectrum Direct site. Its main link is https://spectrumdirect.ic.gc.ca/pls/engdoc_anon/sd_pages.main
For an example of the 'extra' stuff that can be found via the Spectrum Direct site, click on the "Virtual Licence" link in the "Account Information" heading at the top of the main page. Enter '4871231' (no quotes) in the "Licence Number" field, and click Find. When the result comes up, click the link to open the PDF. Now read the stuff on the right side of the page under "Authorized Communications & Conditions". That kind of stuff doesn't show up on a regular search or a search on darkwing. (You can get the licence number on a regular search by checking its box on the search criteria on whatever search you use.)
The regular searches are under "Regular Frequency Search" about a third of the way down the main page. For Chrome69, the best one to choose is "Geographic Area". It not only allows you to choose a center point by lat & long, but also a frequency range (lower limits 0.000001, upper limits 100000.0). So, taking a wild stab at it, I plugged in 730.0 and 745.0 as the limits, set the search range to a radius of 100 kilometers, and made the coordinates 433833 by 792313 (which is the base of the CN Tower, in DDMMSS format). Upon hitting Find, I got 5 records. (I tried with 20, 25, and 50 km before getting results with 100.) The results show TV broadcasters in Guelph, Collingwood, and Kitchener, as well as a commercial license to receive a signal in Brantford, at the Jehovah's Witness Hall. Just because I'm curious, I poked the license number into the Virtual Licence field, and got... erk, "no valid licence". So things aren't perfect. But those are the only licensed operators on 730-745 within 100km of the CN Tower. You could try redoing the search with the center coordinates adjusted to your listening location ... if you have no GPS or other way to get a lat/long fix, just use Google Earth and read it off the bottom status bar (just make sure your mouse pointer is positioned where you want to read the lat/long from).
I encourage all to use the actual Spectrum Direct site. Its main link is https://spectrumdirect.ic.gc.ca/pls/engdoc_anon/sd_pages.main
For an example of the 'extra' stuff that can be found via the Spectrum Direct site, click on the "Virtual Licence" link in the "Account Information" heading at the top of the main page. Enter '4871231' (no quotes) in the "Licence Number" field, and click Find. When the result comes up, click the link to open the PDF. Now read the stuff on the right side of the page under "Authorized Communications & Conditions". That kind of stuff doesn't show up on a regular search or a search on darkwing. (You can get the licence number on a regular search by checking its box on the search criteria on whatever search you use.)
The regular searches are under "Regular Frequency Search" about a third of the way down the main page. For Chrome69, the best one to choose is "Geographic Area". It not only allows you to choose a center point by lat & long, but also a frequency range (lower limits 0.000001, upper limits 100000.0). So, taking a wild stab at it, I plugged in 730.0 and 745.0 as the limits, set the search range to a radius of 100 kilometers, and made the coordinates 433833 by 792313 (which is the base of the CN Tower, in DDMMSS format). Upon hitting Find, I got 5 records. (I tried with 20, 25, and 50 km before getting results with 100.) The results show TV broadcasters in Guelph, Collingwood, and Kitchener, as well as a commercial license to receive a signal in Brantford, at the Jehovah's Witness Hall. Just because I'm curious, I poked the license number into the Virtual Licence field, and got... erk, "no valid licence". So things aren't perfect.
But those are the only licensed operators on 730-745 within 100km of the CN Tower. You could try redoing the search with the center coordinates adjusted to your listening location ... if you have no GPS or other way to get a lat/long fix, just use Google Earth and read it off the bottom status bar (just make sure your mouse pointer is positioned where you want to read the lat/long from).
nova1010
Member
Yes very good site indeed I use the Licensee Name Search https://sd.ic.gc.ca/pls/engdoc_anon/web_search.licensee_name_input and the Single Frequency Search https://sd.ic.gc.ca/pls/engdoc_anon/web_search.frequency_input very usefull for sure.
Anything in that range Canada wide will be TV channels
Although the receive for the Jehovah's Witness is interesting.. maybe they need "express written consent" to watch TV in the hall.
Although the receive for the Jehovah's Witness is interesting.. maybe they need "express written consent" to watch TV in the hall.
torontokris said:
That may be true for now (and for 730-745), but there are plans afoot for 700MHz systems to be deployed in the not too distant future. I know the 700MHz PS spectrum is more around 760-780MHz (or will be when it's settled).
torontokris said:
Now I'm really curious, now that I have a few moments to research it, and I'm going to figure it out. It may be something like a wireless mic or video system, too. I have seen some odd licenses for 72.1 MHz - one site transmit only, one site receive only - in various places in the DB. Turns out these are clocks that are kept 'on time' by a master controller.
The Jehovah's Witness hall appears to have four frequencies in two licenses - one each in "mobile" type for transmitting on 743.85 and 745.85, and one each in "fixed" type for receiving on the same frequencies. So my read on it is that they may have some kind of mobile video/television broadcasting setup. Perhaps they televise events in "the field" and play it back to their audiences in the hall?
DaveH
Member
Jay911 said:
It's not video, just plain old wideband FM, probably wireless mics.
When in doubt, list the emission type and bandwidth. I've seen
these mics "hiding out" inside of TV channel ranges, but it seems
ligit under some conditions (low power, and not used in an area
where it/they would interfere with off-air TV reception).
Also check TX ERP, which for some cases is -15 to -13 dBW
(30-50 milliwatts).
Dave
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