Most people report acceptable results on VHF with a UHF bowtie if the V
is relatively local.
On 7/7/12 12:03 PM, Joe Subich, W4TV wrote:
> > *** And from my original question. Is it a good bet to install this
> > well-regarded amplified TV antenna? Bearing in mind that I will be
> > helpless if the internal amp suffers fundamental overload at HF?
>
> Also far removed from amplifiers and their operation - more appropriate
> for a DTV antennas list.
>
> > bearing in mind that we are getting very decent - but not 100% -
> > reception with a mere 300-ohm folded dipole "FM Antenna" tacked to the
> > wall.
>
> A twinlead folded dipole "FM Antenna" (88-108 MHz) is not very good
> on UHF TV (450-900 MHz). It has a widely varying pattern and on some
> channels appears as a resistive short across the receiver input.
>
> If you get any where near acceptable signals with the FM dipole, all
> stations are in a single direction (+/- 45 degrees or so), and all
> stations are UHF (actual channel - not the virtual channel they ID),
> then a two or four bay bow-tie antenna will be more than enough and
> probably far more reliable than the amplified omni. On the other
> hand if you are in one of those places "between" transmitter sites
> (with clusters in opposite directions) you're likely stuck with an
> omni (or multiple directional) antennas.
>
> Start your search at:
> http://www.antennaweb.org
> http://www.antennapoint.com
> http://transition.fcc.gov/mb/engineering/maps/
>
> Your area has two high VHF channels and many UHF channels (19-47).
> Fortunately, other than one distant independent, they seem to be
> clustered in two directions with less than a 30 degree spread.
> You would probably be best served by a small VHF/UHF dualband
> log-periodic - a UHF "bow tie" antenna would be questionable for
> the two VHF stations.
>
>
> 73,
>
> ... Joe, W4TV
>
>
>
> On 7/7/2012 11:19 AM, Jerry Kaidor wrote:
>>> In any case, all of this is rather far removed from amplifiers.
>>>
>> *** And from my original question. Is it a good bet to install this
>> well-regarded amplified TV antenna? Bearing in mind that I will be
>> helpless if the internal amp suffers fundamental overload at HF? Or
>> should I just pack it off back to Amazon and install something like a
>> bowtie - bearing in mind that we are getting very decent - but not 100% -
>> reception with a mere 300-ohm folded dipole "FM Antenna" tacked to the
>> wall.
>>
>> - Jerry Kaidor, KF6VB
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> 73,
>>>
>>> ... Joe, W4TV
>>>
>>>
>>>
>>> On 7/7/2012 7:18 AM, W2XJ wrote:
>>>> You got what you got. In most cases the antenna had to be adjusted for
>>>> each channel. With DTV this is not very practical as the TV must scan
>>>> the channels seen by the antenna at that instant.
>>>>
>>>>
>>>> On 7/7/12 7:01 AM, Bill Turner wrote:
>>>>> ORIGINAL MESSAGE:
>>>>> On Fri, 06 Jul 2012 22:19:21 -0400, you wrote:
>>>>>
>>>>>> I disagree. No one in their right mind would have used an omni to
>>>>>> receive NTSC.
>>>>> REPLY:
>>>>> What about those hundreds of millions of portable TVs with "rabbit
>>>>> ears" or
>>>>> monopole verticals?
>>>>>
>>>>> 73, Bill W6WRT
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>>>>>
>>>>
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>>
>>
>>
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