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I would look at either the RCA ANT751 or Clearstream 2V.

What does your set up look like beyond the antenna? Any splitters? How much coax is between the antenna and TV? Is the coax in good shape (hopefully it's RG6).

WOI is likely to be very problematic with your current antenna because it broadcasts on real channel 5 which is low VHF, but the signal strength at your location looks relatively strong and both the RCA and Clearstream antenna have VHF elements. The RCA is probably better at VHF but I think either would work better for you.
I pulled a brand new RG6 connection for the install. It's ~75ft long I'd say all in all. There's no barrels, just a straight shot from the antenna right into the amplifier that came with the antenna, then to the TV. I've tested with and without the amplifier, the difference is negligible. I'm only feeding one TV so no splitters of any kind either.

I've been looking at the 2V and 4V both actually. I'm going to go snag one this afternoon and give them a shot, they're one of the few I have available locally here. Appreciate the input, I'll report back.
 

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You have 4 stations on VHF (5,8,11,13). I dont think the Mohu does VHF well. You need an antenna that does both VHF & UHF.
I would go with the RCA myself.
 

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UPDATE: Updraft has PM'd me to tell me he has taken great offense to my above two-word comment and won't be returning to AVS. So, it's up to you if you wish to continue to post helpful advice.

Meanwhile, I'm gonna go scratch my head over this one.
 

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Whatever's in the letter is what's known.

- Trip
 

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Please follow the instructions in the sticky above about antenna threads, your location in the title and a link to your TV Fool report and then maybe we can help you.
 

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What are the actual issues you are having?

An antenna in an attic will last pretty much forever if left alone. The odds of something happening to the antenna itself (if left alone) are about the same as winning Lotto.
 

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What are the actual issues you are having?

An antenna in an attic will last pretty much forever if left alone. The odds of something happening to the antenna itself (if left alone) are about the same as winning Lotto.
There's always been an issue here or there. Like the 8.2 or sometimes even main channels (8) being temperamental with reception.
And by that, I mean digital dropout and flat-out 'no reception'. We'll have to rescan.
 

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The key word, here, is "sometimes." How often do you have issues? Once an hour? Once a week?

How long is the run from the set to the antenna and what does it go through (# of wall plates, splitters, joiners)? that'll tell us if you need a pre-amp.

One thing I notice from eyeballing a map is that you'd be pretty close to the final approach for the airport, depending on the wind direction. Low jets create nasty multipath issues while they're passing overhead.

If it's not even that often, it could be weather fronts moving through.

The other key word is "rescan." How often are you doing that? Do you lose all of the channels or do you just have to rescan to get KCCI?

Two things to do.. note what is going on when you have signal issues. Second is to check every connection all the way back to the antenna. Take it apart, examine the connection (making sure the center conductor hasn't turtled back into the coax, someplace). And put everything back together. Then see if the problems still exist.

One more question.. which way do you have the antenna pointing? And what's around it in the attic? Could be it's picking up static every time your heater kicks on.
 

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Your top 8 stations (KDSM-WOI) are extremely strong. I'm ignoring WOI on RF 5 and using WOI on RF 50. You should not use a preamp. It will likely overload. Reception issues in the attic are often caused by multipath. I'd recommend putting the antenna on the roof. That almost always improves reception.
 

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Reception issues on VHF channels in residential areas are usually caused by interference, most commonly from electrical devices or from local FM radio stations. Amplifiers only exacerbate the issue when in strong signal areas.

Reception issues on UHF stations is usually, as Calaveras mentioned, due to multipath and much less rarely with VHF. The key to reliable UHF reception relies on one of the following: Luck, patience, and experimentation.

Multi-path occurs when the primary line of sight signal path is blocked, most commonly by trees and buildings, and the antenna is picking up whatever signals are making it either through or around (or both) the impairment(s). Placing the antenna in the attic, while very convenient, usually only makes the problem worse.

I've attached several tip sheets that I routinely send out to customers who contact us directly for assistance, you may find them useful. Please note also that we have folks here seven days a week to assist in issues like this, contacting us directly is always encouraged.

We'll have to rescan.
If nothing has changed on the station's end, there is never a need to re-scan unless your TV or converter box is faulty or has gotten its internal memory corrupted. Otherwise, it's about as effective as a placebo is for an illness.
 

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I used GoogleEarth [with TV and FM Transmitter Icons downloaded from TVFool and FMFool: then Doubleclick on *.kmz Files] to find your approximate LAT/LONG [about 2-mi South of WOI-TV]....and then used THAT to find your FMFool Report (see below). You have THREE SUPER-EXTREMELY High FM Signals and some of their 3rd Order Intermodulation Products fall on top of Ch8 [and also Ch11]. This COULD be causing your problem. Those FM Signals could ALSO be forcing the AGC (Automatic Gain Control) in the VHF part of your Tuner to FULL Attenuation, making it less sensitive to other VHF Signals. [There are usually SEPARATE VHF and UHF Input Band Pass Filters and AGC in typical Super-Heterodyne type Tuners.]

PS: Yes, they are on 3 out of the 4 Towers you can see 1.5, 2.0 and 3.5 miles North of you.....ignoring the 0.1-mi difference...

I would recommend installing a FULL-BAND FM FILTER on the Input of the TUNER [cuz FM signals that strong COULD also be leaking in via Coax Downlead], such as following [NO, NOT the one from Radio-Shack, it has much less attenuation on lower FM Band in order to PASS Ch6].:
https://www.antennasdirect.com/store/FM_band_rejection_filter.html?cjid=6155355

And FOR SURE, do NOT use a Preamp or Distribution Amplifier.....

 

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Another new channel. 17.4 is TBD, some quirky thing for millennials (according to Wikipedia).

https://en.wikipedia.org/wiki/TBD_(TV_network)

They'll be airing Back in Time, a 2015 documentary about the Back to the Future movies.

Thurs, Feb 16, 7-9pm and
Sat, Feb 18, 5-7pm.

And it looks like Fox 17 might be dropping Grit in favor of Charge!, a similarly-themed channel of action movies.

https://en.wikipedia.org/wiki/Charge!_(TV_network)

And in case some fans haven't noticed, MeTV has replaced the weekday hour-long episodes of Gunsmoke, with the early half-hour episodes, with Dennis Weaver as Chester. The prints look better than the ones they used a few years back when they aired under the title Marshall Dillon.
 
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