Radio Shack Accurian 7" Portable Handheld TV - Page 2 - AVS Forum
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post #31 of 45 Old 03-13-2009, 11:02 AM
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Quote:
Originally Posted by Trip in VA View Post

That is strange, because my experience agrees with the idea that UHF is a lot easier to receive. I had one of those tiny TVs for a number of years before I got any of my ATSC gear, and when traveling, the highest channels would always come in first. Traveling toward New York, 68 would be the first channel to come in, followed by 47, then 41, then 31, then 25, etc etc.

- Trip

Oh now that's probably why the difference. I've never done any traveling with a portable TV. I've only used them locally or around the house, so that's all I can speak for. Like I said it's probably just the local UHF channels here might be too low-powered. Here the UHF channels are 27 (PBS), 33 (NBC), and 44 (FOX), and that's also their order of quality with 27 being the clearest. There's also some crappy local-local non-affiliate stations that are horrible, you're lucky if you can even pick them up at all even with a larger set-top antenna (19, 21, and a couple of others). My portable TV's can't receive them at all.

The UHF channels my be easier to receive in your situations, as in distance because they are higher frequency. But what I'm talking about is once you're inside the city limits and receiving all major channels, the VHF channels are a lot clearer and the UHF channels have snow problems (on a portable TV).

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post #32 of 45 Old 03-13-2009, 11:08 AM
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my friend has one of these, they've been out for a while now, the reception is terrible on it.


It only works good for analog signals. Digital, squat.
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post #33 of 45 Old 03-13-2009, 03:07 PM
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VHF is easier if there are hills or trees.

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post #34 of 45 Old 03-13-2009, 05:06 PM
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Quote:
Originally Posted by Clint S. View Post

The UHF channels my be easier to receive in your situations, as in distance because they are higher frequency. But what I'm talking about is once you're inside the city limits and receiving all major channels, the VHF channels are a lot clearer and the UHF channels have snow problems (on a portable TV).

That doesn't match my experience either. I've never had much luck receiving anything on low-VHF without a roof antenna.

I really don't know how to explain your experience with VHF working so much better on a handheld TV like that.

- Trip

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Comments are my own and not that of the FCC (my employer) or anyone else.

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post #35 of 45 Old 03-13-2009, 07:28 PM
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I was in the eye of Hurricane Hugo a few miles from the coast in Charleston SC and have been in countless others. Pictures are nice, (assuming anyone in your area is broadcasting and you can recieve it)....but radios are better on batteries and there are many more sources....and DXing AM and shortwave is always an option.....PLUS if you have a transciever you can communicate....especially when phone and cell networks are down. Local, State, Federal......Fire, Police, Rescue......Coast Guard, National Guard, and Military.....not to mention other hams.

Radios FTW.

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post #36 of 45 Old 03-13-2009, 08:36 PM
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Low VHF has alot of interference
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post #37 of 45 Old 03-13-2009, 10:42 PM
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I almost forgot VHF Marine!

LOL!

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post #38 of 45 Old 03-14-2009, 04:18 AM
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Quote:
Originally Posted by Trip in VA View Post

That doesn't match my experience either. I've never had much luck receiving anything on low-VHF without a roof antenna.

I really don't know how to explain your experience with VHF working so much better on a handheld TV like that.

- Trip

Like I've been saying, evidently the UHF stations here are low power & cheap. Or else it's the VHF channels that just have a lot more power than UHF.

God Bless,
-Clint
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post #39 of 45 Old 03-14-2009, 04:19 AM
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Quote:
Originally Posted by nicoge21 View Post

Low VHF has alot of interference

I notice that on some of the low # cable channels here.

God Bless,
-Clint
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post #40 of 45 Old 03-14-2009, 07:59 AM
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Yes, I don't understand why cable operators in the States insist on keeping a local channel on the same channel position on cable as it is broadcast over-the-air in analog. It makes them unwatchable due to the OTA signal bleeding into the cable stream. Analog cable viewers should see a big improvement after the OTA analog shutdown.

In Montreal the local analogs are 2, 6, 10 and 12. Each were reallocated to 4, 13, 7, and 11 on cable to prevent this (2, 6, 10 and 12 were used for preview, community or classified channels). This seems to be done everywhere in Canada. Of course, our local branding has also evolved away from channel number and is now almost always based on network + city or region of license.
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post #41 of 45 Old 03-14-2009, 11:43 AM
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Quote:
Originally Posted by Trip in VA View Post
That doesn't match my experience either. I've never had much luck receiving anything on low-VHF without a roof antenna.

I really don't know how to explain your experience with VHF working so much better on a handheld TV like that.

- Trip
In portable TV/USB tuner situations, UHF stations have almost always been FAR easier for me to receive than VHF stations. Low-VHF stations may as well not even exist in many situations, even with rabbit ears fully extended.

Also, I have found out that rabbit ears (at least the ones I have) perform best at the 2nd stop for UHF and the 4th stop for VHF.

My brother, in Denton, TX, just sent me some results with a rabbit ear/loop combo (see the attached if interested). None of the Low-VHF stations where even viewable and the upper VHF stations also suffered. He can't get upper VHF WFAA-DT.

In my experience, unless someone is willing to put up an outdoor antenna at 20'+, VHF stations are at a disadvantage, at least in LOS or near-LOS areas.

This will become more evident in June when stations discover how many people were looking at poor VHF analog signals or UHF DTV stations (which move back to VHF) on RE/Loops.

 

OTA March 2009.zip 2.8349609375k . file
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post #42 of 45 Old 03-14-2009, 11:48 AM
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Are there any new portable TV's coming out or do we have to wait for ATSC M/H cell phones?

The delay doesn't seem to be getting many more portable TV products on the street...
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post #43 of 45 Old 03-14-2009, 10:24 PM
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Quote:
Originally Posted by Falcon_77 View Post

Are there any new portable TV's coming out or do we have to wait for ATSC M/H cell phones?

The delay doesn't seem to be getting many more portable TV products on the street...

They can make the TV portable just fine. It's the Yagi and the preamp and the tower that are hard to carry around.

Ride the Music
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post #44 of 45 Old 05-01-2009, 08:35 PM
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Has anyone bought one of these portable DTV's yet that will pick up your local stations?

God Bless,
-Clint
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post #45 of 45 Old 05-17-2009, 07:44 PM
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Does anybody know if the rf input on the side rated at 300 ohms? I plugged in a 75ohm antenna and got nothing.
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