Channel Master CM 4228 8-Bay Bowtie UHF Antenna (CM4228) - Page 6 - AVS Forum
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post #151 of 170 Old 03-30-2009, 08:34 AM
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I wish someone would do a field test on the U-75R. I have found one set of specs that says it has 7.9 decibles of gain, and another that says it had 9.5 - I use this antenna and have excellent reception at just over 60 miles from a 1,800 ft tower.

So the new CM is only better if you modify it. That stinks. I wouldn't buy it like that. Piece of junk.
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post #152 of 170 Old 03-30-2009, 09:05 AM
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Quote:
Originally Posted by jspENC View Post

I wish someone would do a field test on the U-75R. I have found one set of specs that says it has 7.9 decibles of gain, and another that says it had 9.5 - I use this antenna and have excellent reception at just over 60 miles from a 1,800 ft tower.

It's essentially equivalent to the UHF part of the RS VR-90x (not sure about the exact part #) ... it's the 80" boom VHF/UHF combo, which has been modeled/test at HDTVPrimer.com.

It's OK outdoors, but no match for the original CM4221 (4-bay.)
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post #153 of 170 Old 03-30-2009, 09:30 AM
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I had the VR-90X, and it was not near as effective at UHF as the U-75R alone. In a Thunderstorm, the wind tore it all to pieces. When I bought it, I only paid $25 for it, now it is $70.00 I believe. That is a rip off because in a wind storm, it will break.
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post #154 of 170 Old 03-30-2009, 09:37 AM
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Quote:
Originally Posted by HDTVChallenged View Post

...It's OK outdoors, but no match for the original CM4221 (4-bay.)

Emphasis on the word "original." The original 4221 was fantastic. Unfortunately, it had no 7-13 gain to speak of.
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post #155 of 170 Old 03-30-2009, 09:46 AM
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Quote:
Originally Posted by jspENC View Post

I had the VR-90X, and it was not near as effective at UHF as the U-75R alone. In a Thunderstorm, the wind tore it all to pieces. When I bought it, I only paid $25 for it, now it is $70.00 I believe. That is a rip off because in a wind storm, it will break.

Yeah, I wouldn't be surprised if there were some coupling issues with the VR-90X. But, there's no question that if you just cut the UHF section off of it, you have a U-75.
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post #156 of 170 Old 03-30-2009, 10:26 AM
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I checked HD Primer. They only tested the VU-90XR up to channel 13, and no test for the UHF only antennacraft models. They should even it up and do a few of these.

I also see Radio Shack has a nice looking high band and UHF combination antenna now.
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post #157 of 170 Old 03-30-2009, 10:38 AM
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Quote:
Originally Posted by jspENC View Post

I checked HD Primer. They only tested the VU-90XR up to channel 13,

Yep ... I was just about to post a correction ... sorry about that.

The verdict on the U-75 ... expect better performance than the RS Double-Bow, but less than the original CM4221 ... as long as it's mounted outside. You should be able to guestimate a gain figure/range from those bounds. ... somewhere between 5 and 7dBd would be my guess.
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post #158 of 170 Old 03-30-2009, 01:17 PM
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Here is mine. It's up near 26 or so ft.
LL
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post #159 of 170 Old 03-30-2009, 05:25 PM
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I am little confused about whether the new CM4228HD is applicable on VHF-Hi or not ? Because their Product Page says it has a reception range of 45 miles for Ch 7 thru 13, but their Antenna Selection Guide says the opposite. It lists the antenna under "UHF only" and says "N/A" under VHF-hi. So what should I believe ? Which of the two is correct ??
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post #160 of 170 Old 03-31-2009, 08:16 AM
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called CM - the 'antenna sel guide/ref chart' is incorrect. I was told the VHF-hi gain is in the range of ~4-5db.
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post #161 of 170 Old 03-31-2009, 08:18 AM
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The 4228HD is a cheaply made antenna for channels 7 thru 69. (VHF-HI & UHF)
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post #162 of 170 Old 03-31-2009, 09:43 AM
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Quote:
Originally Posted by Anode View Post

called CM - the 'antenna sel guide/ref chart' is incorrect. I was told the VHF-hi gain is in the range of ~4-5db.

A better made 7-69 antenna for less money:
http://www.solidsignal.com/prod_disp...p?prod=HD7694P
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post #163 of 170 Old 04-05-2009, 02:25 AM
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Quote:
Originally Posted by arxaw View Post

A better made 7-69 antenna for less money:
http://www.solidsignal.com/prod_disp...p?prod=HD7694P

I like the recommend the Winegard above or if someone is in a fringe 7696P is also a good antenna. I don't know anyone that bought the really big brother the 7698P, but it's a monster in size, but is it worth the extra money.

AntennaCraft is not known for rugged construction, but someone in an attic or low antenna not in ice or snow, the HBU22 works pretty darn good for near fringe on 7-13.
http://www.solidsignal.com/prod_display.asp?prod=HBU22

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post #164 of 170 Old 04-05-2009, 02:28 AM
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If anyone has one of the old 4228's on the ground or where they can measure could you do me a huge favor.

I have (2) old 4221As. I want to build a bracket to put them side by side like the old 4228.

I need to know how far apart the center of the bowties are on one side of the old 4228 to the other. This way I know how far apart to put my 4221 apart from each other.

Thanks in advance.

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post #165 of 170 Old 04-05-2009, 04:39 PM
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Quote:
Originally Posted by Piggie View Post

If anyone has one of the old 4228's on the ground or where they can measure could you do me a huge favor.

I have (2) old 4221As. I want to build a bracket to put them side by side like the old 4228.

I need to know how far apart the center of the bowties are on one side of the old 4228 to the other. This way I know how far apart to put my 4221 apart from each other.

Thanks in advance.

I measure it as 20.125 inches center-to-center.
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post #166 of 170 Old 07-10-2009, 08:58 AM
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Quote:
Originally Posted by Piggie View Post

AntennaCraft which I used to consider the low end of the totem pole looks really good compared to the junk now put out by AntennasDirect and the new Chinese Channel Master.

...Now that the HD4228 has been proven the junk suspected, how do the AntennaCraft and Winegard 8 bays compare? Ken over at hdtvprimer.com had never reviewed either of those antennas. But with (at least to me) the HD4228 and the DB8 junk, (leaving out building) the only commercial equivalents are the U8000 and the HD8800. But there is very little data outside the manufacturers for these products I have found.

I have seen no reviews or tests of the Antennacraft U8000. If someone has experience with it or links to tests, please post. Thanks
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post #167 of 170 Old 04-22-2011, 03:50 AM
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Cool
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post #168 of 170 Old 04-22-2011, 12:21 PM
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Yep. Crazy, man. Daddy-o.

(4:30 point: www.youtube.com/watch?v=8tgmXh7MwUQ)
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post #169 of 170 Old 09-30-2012, 01:40 PM
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I have a 10 year old CM 4228. The bowties are rusting a bit. What kind of paint could I use that is non reflective? Are there any kinds of car paint or tractor paint that would be suitable?
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post #170 of 170 Old 09-30-2012, 01:40 PM
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I have a 10 year old CM 4228. The bowties are rusting a bit. What kind of paint could I use that is non reflective? Are there any kinds of car paint or tractor paint that would be suitable?
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