[kwlug-disc] Home made indoor TV Antenna

Khalid Baheyeldin kb at 2bits.com
Wed Apr 16 12:30:26 EDT 2014


On Wed, Apr 16, 2014 at 12:20 PM, <zixiekat at gmail.com> wrote:

> I think one of the largest factors in me getting stations from Toronto, is
> Baden tower is directly between my house and toronto. And being only 4km
> away, CKCO interferes.
>
> I'd be willing to try a nice yagi antenna, but don't really want to put
> out the money just to test something I get via streaming (CBC).
>

I know they stream section by section here
http://www.cbc.ca/player/News/Canada/
Which means you have to "hunt" for what segment/show.

Is there a live stream of CBC News without the hunting in a browser?


> Sent from my BlackBerry 10 smartphone on the Rogers network.
>   *From: *John Johnson
> *Sent: *Wednesday, April 16, 2014 11:43 AM
> *To: *KWLUG discussion
> *Reply To: *KWLUG discussion
> *Subject: *Re: [kwlug-disc] Home made indoor TV Antenna
>
> Thanks Joe, for reading and commenting.
> I did mention: additional elements, such as directors and reflectors, ...
>
> I would put your Fresnel lens and waveguide and "boost" technologies would
> come under additional elements.
>
> Regards
> JohnJ
>
> On 2014-04-16 11:28, Joe Wennechuk wrote:
>
>
>
>
>  Basically: more metal in the sky == more captured signal (YMMV)
>
>
>
>  You can also use fresnel lense, or some type of waveguide antenna to boost the signal. There is a lot of DIY about this. I have never built one for Television, but I did do a Pringles can waveguide for wifi, and it was amazing how good it actually worked.
>
> ________________________________
>
>
>  Date: Wed, 16 Apr 2014 11:11:13 -0400
> From: jvj at golden.net
> To: kwlug-disc at kwlug.org
> Subject: Re: [kwlug-disc] Home made indoor TV Antenna
>
> On 2014-04-16 09:55, Colin Mackay wrote:
> I have one of these: <http://cdn3.volusion.com/m5ytq.j6phj/v/vspfiles/photos/CM-3000A-2.jpg?1385029454> <http://cdn3.volusion.com/m5ytq.j6phj/v/vspfiles/photos/CM-3000A-2.jpg?1385029454>
> [ edit ]
> Did try an 8-bay like in the walmart link above, to no avail.
>
> While I do not have recent experience with RF, my experience with
> antenna technology goes back, way back. Perhaps, a decade or 2 or 3 or
> 4.
> That said, IMHO, the basic principles remain.
>
> Please note that I am trying not to sound pedantic. Nor write an essay.
>
>
>     And I apologize for any perceived pedantry and the length.
>
> RF is really a higher frequency of the Electro-Magnetic radiation.
>
> And RF itself covers a wide range of frequencies, for the purposes of
> this discussion from MW (medim-wave used for AM radio) though to
> microwave.
>
> Excluding the plumbing and stripline technologies of microwave,
> reception of the lower frequencies, including VHF, UHF, UHF-HD, etc.
> depend on the first principle, i.e. signal capture.
>
> By "signal capture" I mean the capture of the RF radiation in "the
> ether", in the desired frequency band. This "signal" will include a
> multitude of channels or sources, each with its own content modulation
> methods. This "signal" will also include channels or sources from
> frequency bands outside of the desired frequency band.
>
> Presumably one of the channels or sources is the desired source in the
> desired frequency band. After "signal capture" a variery of
> technologoies come in to play to suss out the desired channels or
> source from the "captured signal". These technologies include filters,
> amplifiers, tuners, etc. And are not the point of this discussion.
>
> Returning to "signal capture", the first principle mentioned above,
> involves the principle of induction, i.e. the generation of an
> electrical signal in a conductor by the RF energy "in the ether".
> Tesla, Hertz, Lenz, Faraday, Maxwell and Fessenden (a Canadian in the
> bunch) and others have studied, researched and documented this process.
>
>
>     However, basically, the strength of the induced electrical signal in
> the conductor depends on the properties of the conductor and the
> strength of the RF radiation at the point of induction.
>
> We cannot do much about the strength of the RF radiation at the point
> of induction.*
>
> That leaves the conductor, and the properties of the same. One of the
> properties of the conductor is its "size" or "length" relative to the
> frequency of the RF radiation. The "size" or "length" of the conductor
> can be used to "tune" the conductor to specific frequency bands. This
> can be in a 1:1 relation (full wave) , or in 1:n where n is even
> multiples, or more common n:1 where the conductor is in even fractions
> of the frequency, e.g. half-wave, quarter-wave, etc.
>
> Basically: more metal in the sky == more captured signal (YMMV)
>
> IMO Antenna packaging like flying saucer is like that of fishing lures
> at Canadian Tire. The item must first attract the buyer and whether or
> not the item actually works in the wild is secondary.
>
> * Some technologies can improve the strength of the RF radiation at the
>
>
>     point of induction. These include placement and orientation of the
> conductor, i.e. antenna. These also include additional elements, such
> as directors and reflectors, as seen on Yagi VHF antennas and the
> bow-tie on on the Walmart HI-DEF antenna.
>
> /essay
>
> Regards
> John Johnson
>
>
>
>
>
> _______________________________________________ kwlug-disc mailing list
>
>
>     kwlug-disc at kwlug.org http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>
>   		 	   		
>
> _______________________________________________
> kwlug-disc mailing listkwlug-disc at kwlug.orghttp://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>
>
> -----
>
> Checked by AVG - www.avg.com
> Version: 2014.0.4355 / Virus Database: 3882/7349 - Release Date: 04/15/14
>
>
> .
>
>
>
>
>
>
> _______________________________________________
> kwlug-disc mailing list
> kwlug-disc at kwlug.org
> http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>
> _______________________________________________
> kwlug-disc mailing list
> kwlug-disc at kwlug.org
> http://kwlug.org/mailman/listinfo/kwlug-disc_kwlug.org
>
>


-- 
Khalid M. Baheyeldin
2bits.com, Inc.
Fast Reliable Drupal
Drupal optimization, development, customization and consulting.
Simplicity is prerequisite for reliability. --  Edsger W.Dijkstra
Simplicity is the ultimate sophistication. --   Leonardo da Vinci
For every complex problem, there is an answer that is clear, simple, and
wrong." -- H.L. Mencken
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://kwlug.org/pipermail/kwlug-disc_kwlug.org/attachments/20140416/b5b04f06/attachment-0001.html>


More information about the kwlug-disc mailing list