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How do I Build a Channel 6 Antenna?

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Old 09-16-2010, 12:23 PM   #1
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Default How do I Build a Channel 6 Antenna?

In their infinite wisdom, a killjoy TV network (Global TV), has opted to remain on low VHF channel 6 after the analog shut-off date in Canada.

This means giant antenna time. Since there will only be one low VHF channel, I'm thinking I might save money and hopefully weight by building a one-channel-only antenna.

Does anyone here know how to build a channel 6 antenna?

FYI - I'm referring to the CIII Global TV repeater in Ottawa.
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Old 09-16-2010, 01:16 PM   #2
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VHF is not UHF, it is not as simple as getting a bunch of coat hangers together and physically connecting a bunch of stuff to build your own antenna.

The VHF antenna has to be of a certain size and shape.

There is models for this type of construction on most web sites designed to build your own antenna enthusiasts.

IN My HONEST OPINION - unless you have the materials necessary on hand and have a good accurate way of measuring everything - it is not in your best interests to build your own antenna. You can just cut back - remove the longest part of a VHF antenna and just use it the way it was designed to be used. VHF is a real low technology that does not require much effort to receive.

So your opinion about how crappy it is going to be - even before you experience it - is all based on hearsay and not physical evidence.
In a lot of ways it is actually better then the UHF. You don't have to be as close to receive it's signal and you don't have to be as precise - as to where you aim the antenna to get it's signal. It's not as susceptible to weather changes as the UHF and the only real problem with it is that you will see more interference when there is lightning or when someone turns on or off a electrical device or a fence charger.
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Old 09-16-2010, 01:58 PM   #3
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Thanks for your feedback, JB.

Those low VHF antennas are so huge so if I could just cut a pole to the right length for the one channel that would be very nice. It's probably not as simple as it seems.

I have been reading that in the US, only 2% of DTV stations are on low-VHF and that it has been a disaster for them. Low VHF is very susceptible to interference from planes going by, vacuum cleaners, power tools, etc. If a neighbour uses his electric wires for his in-home computer network, you could lose your low VHF altogether. In the old days your reception got noisy from interference. Nowadays it means your station drops out. Many low-VHF stations have received permission to double and quadruple their transmission power on an emergency basis. Some have even resorted to having their signal simulcast in standard definition on a UHF subchannel.

Given these accounts of the experiences of many low-VHF stations in the US it is somewhat mystifying why several stations here in Canada would go about this route. One suspects it might be A) They are unaware of the problems. B) They want to save money by converting existing low-VHF analogue transmitters to DTV. C) They think they'll save money on electricity costs because they'll be able to transmit at lower power. This has not proven to be the case in the USA, as mentioned. D) They don't care about OTA (anti-consumer attitude).

I should have provided more evidence when I made my first post. To illustrate that what I was getting at is more than just hearsay please have a look at these links to academic papers and testimony from industry experts to the FCC:

This one is a PowerPoint presentation to the FCC
http://reboot.fcc.gov/c/document_lib...&groupId=19001

This one is an academic paper in PDF format:
http://www.mstv.org/docs/techinfo.pdf
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Old 09-16-2010, 08:26 PM   #4
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FM is just above channel 6 in frequency, try an FM antenna.

You might have to trap out the FM part if you have strong FM stations in the same direction as the station.

Just an idea.
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Old 09-17-2010, 01:37 AM   #5
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Quote:
Originally Posted by Toronto+KazQC View Post
In their infinite wisdom, a killjoy TV network (Global TV), has opted to remain on low VHF channel 6 after the analog shut-off date in Canada.

This means giant antenna time. Since there will only be one low VHF channel, I'm thinking I might save money and hopefully weight by building a one-channel-only antenna.

Does anyone here know how to build a channel 6 antenna?

FYI - I'm referring to the CIII Global TV repeater in Ottawa.
Yes, I do know how to build a channel 6 only antenna...



You "might" be able to guess which one it is....
This antenna origianally was a (poor performer) channels 2 thru 6 antenna, that now has a new boom and has the elements re-cut and re-spaced so as to receive RF 6 only....to receive my WRGB 6....and it IS a flame thrower....
I can give you the element lengths and spacing inches, and tell you how to build it...but after material costs....and time...you might be better off buying an AntennaCraft Y5-2-6, for $26.95 at Summit Source....the materials alone to build this antenna will well exceed that price...
That's my suggestion, but if you want the specs, PM me...

Last edited by k2yi; 09-17-2010 at 02:13 AM.
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