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  Topic Review (Newest First)
2016-09-26 11:13 AM
abnutcracker The replacement for the CM7000 and CM7001 is now the CM7003

Subscription-free, antenna (ATSC) / cable (clear QAM) converter box that allows you to tune and display digital broadcasts on older analog only TVs. Includes basic on-screen program information and USB media player functionality.

http://downloads.channelmaster.com/S...spec+sheet.pdf

User Guide -

http://downloads.channelmaster.com/S...003_Manual.pdf
2014-11-04 10:34 PM
roger1818
Stealthtenna 50 (cm-3010hd)

I noticed that Channel Master have a new antenna, the CM-3010HD (aka Stealthtenna 50). Could be a good option for those with strong signals and want something small and discrete.
2014-11-02 01:50 PM
carnut2 Further to my above problem: I ordered a new CM balun and reattached it using the old plastic shell as spacer. I'm using two CM4228, one pointing to Erie 41miles away the newly modified one to Buffalo 32miles away, both across Lake Erie in different directions. I only receive signals from the old unmodified one. The CM amp and signal combiners both worked before my mishap. What's the easiest way to debug this, considering it's a real hassle to take components apart on top of the 30"tower?
2014-10-05 05:03 PM
carnut2 Thanx Bouval, I'll try that.
2014-10-03 08:44 PM
BOUVAL Carnut2,

Simply remove the black plastic box by popping off the 2 rivets with a drill and install a regular balun with nuts and screws.

Make sure that you keep a 2 inch space between the 2 rods where the new balun will be. You can use a plastic piece of somekind for that, NOT wood.
.
2014-10-03 06:37 PM
carnut2
help with CM4228 broken connector

I tried to re-orientate my antenna and broke the cable connector to the circuit board. The small middle wire is too short to reach. Is it salvageable? The warranty just expired but I don't think they would have covered it anyway
2014-08-27 02:03 PM
stampeder Several posts about using a CM4228HD in Bolton, ON moved here:

ON - Vaughan/Richmond Hill/Markham/North of 407 - OTA
2014-07-19 08:18 AM
Jorgek I have 2 winters on the 4221HD. Still looks brand new.
2014-07-19 02:55 AM
stampeder The are hackable too: CM4228HD Hardware Hacks

The old CM4228 was replaced in 2007 by the new CM4228HD.
2014-07-19 02:44 AM
Archerotor
RE: Newer Channel Master Antenna Durability

Thanks. 4228HD's seem very popular.
2014-07-19 02:33 AM
stampeder I have an unused one at the side of my house with my other experimentation antennas and it has been holding up well after several years. The build quality is excellent.
2014-07-19 12:08 AM
Archerotor
RE: Newer Channel Master Antenna Durability

It's been a few years now since Channel Master changed their 4221 and 4228 to the overseas produced 4221HD and 4228HD, and I wanted to know how they are standing up after a few years, especially in Canadian winters. Are there any inherant problems that seem to crop up with rivets, the PCB balun, or early corrosion of particular parts? Are they pretty durable? They look a bit stronger than some of the clones I've seen.
2014-06-17 02:48 PM
holl_ands MILEAGE means NOTHING....everybody's TERRAIN is different.....which is why we recommend entering your location into www.tvfool.com to see what YOUR signal levels look like....

The ONLY MEANINGFUL COMPARISON between Antennas are the results from a 4nec2 modeling exercise, such as found in SOME manufacturer's literature plus my link below and HDTVPrimer:
http://www.google.com/url?sa=t&rct=j...EyeT6w9n7vugZA
2014-06-17 01:52 AM
Archerotor
RE: Channel Master Store: CM-4221HD ULTRAtenna

Anyone else notice Channel Master has increased their range from 45 miles to 65+ miles on this antenna. (I'm guessing to compete with the advertised range of the AD DB4e.) From experience, what is generally a reliable distance with the CM-4221HD antenna, and is it prone to multipath?
Also, how does it stand up to Canadian weather after a few years? - Corrosion, anything tend to work itself loose?
2013-08-15 06:06 PM
Pete Higgins dsspredator,

Actually, I live in Moreno Valley; right behind Box Springs Mtn. here is a link to my TV Fool report:
http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3d1dda169109ca5c

If you click on “Only Digital” KCBS on channel 42 (2.1) @ -112.9 will show up.

I have two OTA antenna setups that I play with. The original is on a push-up mast with the Channel Master CM-4228 and Winegard YA 1713. I am using one RCA TVPRAMP1R Amplifier with that setup. The second is a tower I erected last summer with an Antennas Direct 91XG and an Antennacraft Y10-7-13. I just installed a second RCA amp., yesterday with this setup. Both amps are configured for separate VHF/UHF antenna inputs and both amps have the RCA’s FM filter in use.

With both setups, I get down to KCBS pretty reliably with two exceptions; the 91XG rarely gets channel 36 (4.1 KNBC) but gets channel 43 (2.1) when propagation is favorable. The CM-4228 almost always gets channel 36 (4.1 KNBC) but rarely gets channel 43 (2.1). I also get channels 8.1 CBS, 10.1 KGTV, 15.1 PBS, 39.1 NBC & Fox 69.1 (and their sub-channels) from San Diego. Pointing at Twentynine Palms, I get channel 23 (31.1).

I have one local FM station on 99.9 MHz that FM Fool lists @ -13.4 dBm and one local UHF TV station that TV Fool lists @ -15.6 dBm. I have to point right at them to get the 1 & 2 Edge Los Angles TV channels, so I’ve had a lot of problems with preamp signal overload. So far, neither RCA amp. has exhibited the signs of overload that both of my Winegard’s (AP-2870 dual input & HDP-269 single input) displayed.

Are you in the area?
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