AVS Forum Special Member
Join Date: Dec 2000
Location: Seattle, WA, USA
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Well I decided to give the CM4221 a shot, and picked one up at Pringle in Everett. I decided against the larger 8 bay (4228?) for two reasons....more expensive (not a good reason :P), and more importantly, it wouldn't fit in my car! :P I'm happy with the 4221, and will just have to make some adjustments to get 5 a little more stable.
I upgraded from a RS UHF Yagi (the bigger one), and have a rotor and a winegard pre-amp (UHF). My signal strengths for 4, 5, 7, and 13 were good prior to the upgrade, but channel 5 was prone to lots of dropouts, and the rest were very succeptible to wind and rain (lots of dropouts or unable to lock in bad weather...bad news in seattle :P). I have no luck getting 9 to tune in properly....
After the new antenna install, I get 4,5,7, and 13 with good strength, but 9 is iffy...sometimes it works, but most of the time is just bounces around and won't lock. Channels 4,7, and 13 are rock solid (don't have numbers from a stb, I use accessDTV) but they are at ~90% + each with proper antenna pointing (I have a rotor with remote). Channel 5 is problematic for me, but with proper pointing, I can get it to lock and be stable at ~50-70%....
The upgrade from the rs Yagi to the CM4221 (4 bay bowtie) has really improved my channel stability (at least yesterday when it was clear and not windy). With the RS yagi, when it would get windy, I couldn't pick up anything....I don't know if the 4221 will help with that, but here's to trying! :P
One thing I am going to try is raising the antenna a little further up. I have a 5' mast with a rotor on top, then the cm4221 directly mounted to the rotor. I'll probably get a longer "extension" mast, and mount the antenna partway up that. I can't go too high, as that will cause too much strain on the rotor, but with the bowtie antenna it won't be as much of an issue as it was with the yagi. Would have put it higher yesterday, but it was cold, would have required one more trip out (thought I had an extra mast at home so didn't pick one up), and I'd need a longer coax patch cable to hook it up (I'm out of connectors to crimp on.....got the cable and tool, just no connectors).
Anyway, so far so good :P