BTW I've been using cheap old Radio Shack remote amps, but they were
running $50 plus. I use those as they only last a couple of years with
all the lightning around here.
73
Roger (K8RI)
Roger (K8RI) wrote:
> kd4e wrote:
>
>> Actually, a digital signal is either real good or it is real
>> gone.
>>
>>
> There is a thin band, or very narrow range where the signal breaks up,
> pixelizes, pauses, or goes out of sync
> between the audio and video, but it is so narrow it is seldom seen. When
> the signal reaches that level it is susceptible to all sorts of
> interference.
>
>
>> Here in the fringe area we need help to get the signal strength
>> we need for a consistent signal lock.
>>
>>
>>
> I've found the digital signals to be far more reliable than the analog.
> I now get stations from Lansing and the Northern Detroit area that look
> as good as locals where the same stations on analog aren't worth
> watching. I now receive about twice as many off the air signals as I did
> with analog and the antennas don't seem to be quite as fussy to
> pointing. Unfortunately there are two groups of stations with one from
> SE to SW with another on about 330 degrees. So I have two antennas
> which I switch between. BTW these are only about 10' from the tribander
> which gets the legal limit.
>
>> If I could find a mast-mount pre-amp which includes
>> bandpass and low-pass filters, to keep non-TV signals
>> out, then it should do a good job.
>>
>>
> I use antenna mounted preamps on two large UHF antennas that pick up
> both VHF and UHF. The low band VHF is strong enough that the UHF
> antenna does right well. Of course the distance is only about 35 to 40
> miles over flat land and my antennas are at 90 plus feet. HOWEVER they
> are only about 15 to 20 feet above the 144/440 diamond repeater antenna
> (Up to 160W but normally 50), about 20' below the 7L C3i 6-meter antenna
> being fed a KW and about 30' below the 144 and 440 arrays with the
> capability of 1KW out on the 144 band. We are limited to 50 watts on
> 440. So far no problems with my antennas but I did get into channel 12
> on my neighbor's TV in the garage using rabbit ears. I gave him a good,
> but small all band TV antenna and that ended that problem.
>
> I'd go with a 1/4 wave stub to notch out the 2-meter band if it's a
> problem or build a filter using a group of stubs as they recommend
> behind the henry 2002A. A KW on six doesn't seem to bother anything here.
>
> 73
>
> Roger (K8RI)
>
>> > WA3GIN wrote:
>>
>>
>>> THEY ARE ALL JUNK
>>> WITH DIGITAL YOU MAY NOT NEED A PREAMP
>>>
>>>
>>
>>
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