Wacky, Tacky OTA Gear (What NOT To Buy!) - Page 5 - Canadian TV, Computing and Home Theatre Forums

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post #61 of 117 (permalink) Old 2011-05-17, 01:10 PM
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post #62 of 117 (permalink) Old 2011-05-17, 03:43 PM
 
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kgb > They look like they where use by the Japanese army from a Godzilla movie!

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post #63 of 117 (permalink) Old 2011-05-21, 12:09 AM
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Talking

Gordzilla probably desing those
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post #64 of 117 (permalink) Old 2011-05-23, 04:10 PM
 
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I hate to say it but those Ebay Antenna's work!
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post #65 of 117 (permalink) Old 2011-05-23, 06:21 PM
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I hate to say it but those Ebay Antenna's work!
So do paperclips when the conditions are good enough. :-)
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post #66 of 117 (permalink) Old 2011-05-23, 10:39 PM Thread Starter
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Christpuncher, you didn't mention which of those antennas (there are quite a few different ones) so we need you to post about which antenna you meant into our Antenna Research & Development forum so that our OTA Antenna gurus can do a proper technical evaluation and analysis of the design.

Until then we'll continue to laugh at those stupid garbage antennas and feel sorry for the folks who mistakenly buy them. For a similar amount of money (or less) everyone can get the antenna(s) that will work best for them.
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post #67 of 117 (permalink) Old 2011-05-24, 12:18 PM
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There is a big difference between working and being good. With a good signal, almost anything will work and with DTV, you won't notice a difference since the picture is perfect up until just before you loose the signal completely (there is a small window where you get pixalation and drop outs).

Here at DHC we like to recommend good antennas that will continue to work when the cheap ones stop working. It is the old adage, you get what you pay for. After all Murphey's Law says that your reception will cut out when you least want it to (the dead of winter when you don't want to get on your roof and during the most important program to you).

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post #68 of 117 (permalink) Old 2011-05-24, 06:46 PM
 
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So do paperclips when the conditions are good enough. :-)
Paperclips do work here! Or simply make contact to the coax with your thumb. Human antenna! Line of sight, 15km...
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post #69 of 117 (permalink) Old 2011-05-24, 09:35 PM
 
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Paperclips do work here! Or simply make contact to the coax with your thumb. Human antenna! Line of sight, 15km...
Do you have the technical specs for the "human antenna" so we could get the gain graphed lol
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post #70 of 117 (permalink) Old 2011-06-25, 11:46 AM
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Talking human antenna

here it is,, it is prety multidirectional
HTML Code:
CM omni jm
CM 	
CM 
CM 
CM 
CM 
CE
SY len=.4836	'Symbol: Length for WL/2
GW	1	9	0	-0.015	0	0	0.015	0	.002	'Wire 1, 9 segments, halve wavelength long.
GW	0	0	0	-0.015	0	0	-0.015	.25	.002
GW	0	0	0	-0.015	0	0	-0.015	-.25	.002
GW	0	0	0	0.015	0	0	0.015	.25	.002
GW	0	0	0	0.015	0	0	0.015	-.25	.002
GW	0	0	0	-0.2	0.1	0	-0.015	0.25	.002
GW	0	0	0	0.2	0.1	0	0.015	0.25	.002
GW	0	0	0	-0.2	-0.25	0	-0.015	-0.25	.002
GW	0	0	0	0.2	-0.25	0	0.015	-0.25	.002
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GW	0	0	0	0.015	.25	0	0	.25	.002
GW	0	0	0	0	.25	0	0	.35	.002
GW	0	0	0	-.1	.35	0	0	.35	.002
GW	0	0	0	.1	.35	0	0	.35	.002
GW	0	0	0	-.1	.45	0	.1	.45	.002
GW	0	0	0	-.1	.35	0	-.1	.45	.002
GW	0	0	0	.1	.35	0	.1	.45	.002
GE	0
LD	5	1	0	0	58000000	'Wire conductivity
GN	-1
EK
EX	0	1	5	0	1	0	0	'Voltage source (1+j0) at wire 1 segment 5.
FR	0	0	0	0	470	0
EN
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post #71 of 117 (permalink) Old 2011-06-26, 07:23 PM
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Originally Posted by Christpuncher View Post
I hate to say it but those Ebay Antenna's work!
About as good as the coat hanger antenna!

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post #72 of 117 (permalink) Old 2011-08-19, 05:37 PM
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I love this one...

Wacky, Tacky OTA Gear (What NOT To Buy!)

"This is the one you've been thinking about"

You know my thoughts?! AAHHHHH!!!

Last edited by stampeder; 2011-08-19 at 09:57 PM. Reason: link to previous post fixed
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post #73 of 117 (permalink) Old 2011-09-08, 08:18 PM
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I did a roof install today for a nice older gentleman who had bought a combo UHF/VHF antenna of a dubious brand name. The antenna had an integrated amplifier and rotator.

Of course I discussed the cons of buying such equipment, but the antenna was affordable for this cash-strapped pensioner.

Surprisingly, the antenna turned out to work reasonably well. The one concern I had though is that it used non-standard cable and connectors on the 50' or so of cable that was provided between the antenna and control box (rotator control, signal, and pre-amp powering). This of course makes grounding and lengthening the cable run difficult. (the cable is smaller than RG59--probably what's known as "mini" coax).

Further, the rotator control had no direction indicator. You can rotate, but have no idea where the antenna is pointed.

The caveat here: If you're considering a "junk" brand (and I don't recommend it), avoid any models that use hard wired non-standard cable and/or connectors!

DMX 68' tower, HyGain HAM 5 rotator, Antennas Direct DB8e & C5, Channel Master 7777 preamp, Siemens surge protection
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post #74 of 117 (permalink) Old 2011-09-09, 09:34 PM
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Jase, my neighbor installed one of those same Chinese made 'junk' antennas up on his roof using the same tripod that his LOOK TV antenna was once using... it didn't last the winter... by spring it had fallen apart. I watched it self destruct over the winter from my kitchen window.


Looked like this when new
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post #75 of 117 (permalink) Old 2011-09-09, 09:46 PM Thread Starter
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That's a great point that needs to be made: if a person thinks a junk antenna is a great deal, wait until all the $$$ are added up after replacing it!

The moral of the story is to buy good OTA gear the first time.
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