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TV giving bad reception

F

Fred

Jan 1, 1970
0
Using rabbit ears works fine around here, but recently channels 2-5 are too
snowy to watch, channel 7 is sometimes OK, and channels 8-88 are fine. All
stations have transmitters on the same mountain, so I'm thinking the problem
is with either TV or antenna. I have moved the antenna all over the room
and get some slight improvement but not much.

Anyone seen this before and know a cause of it? (I have also put a
different rabbit ears antenna on the TV and same results.)

Thanks in advance.

Fred
 
try an an aerial with built in gain amplifier (ideally with a varialble
dB control). try with another tv to be sure yours doesn't have a bad
tuner
 
N

NSM

Jan 1, 1970
0
| Using rabbit ears works fine around here, but recently channels 2-5 are
too
| snowy to watch, channel 7 is sometimes OK, and channels 8-88 are fine.
All
| stations have transmitters on the same mountain, so I'm thinking the
problem
| is with either TV or antenna. I have moved the antenna all over the room
| and get some slight improvement but not much.
|
| Anyone seen this before and know a cause of it? (I have also put a
| different rabbit ears antenna on the TV and same results.)

Yes. Someone parked a truck in front of the signal. Sometimes I've seen
where you were picking up a good solid ghost and something has moved. Also,
has the weather changed recently?

N
 
F

Fred

Jan 1, 1970
0
Weather doesn't have an effect, but will look at the truck situation here!
Thanks.
 
A

Asimov

Jan 1, 1970
0
"Fred" bravely wrote to "All" (01 Jan 05 18:53:03)
--- on the heady topic of "TV giving bad reception"

Fr> From: "Fred" <[email protected]>
Fr> Xref: aeinews sci.electronics.repair:5514

Fr> Using rabbit ears works fine around here, but recently channels 2-5
Fr> are too snowy to watch, channel 7 is sometimes OK, and channels 8-88
Fr> are fine. All stations have transmitters on the same mountain, so I'm
Fr> thinking the problem is with either TV or antenna. I have moved the
Fr> antenna all over the room and get some slight improvement but not much.

Fr> Anyone seen this before and know a cause of it? (I have also put a
Fr> different rabbit ears antenna on the TV and same results.)

Fr> Thanks in advance.

Fred,

Try adding a high pass filter to the antenna that cutsoff sharply
below 50-54MHz (ch-2). Seems a lot of devices' SMPS's these days
generate lots of hash into the powerlines that gets radiated and is
easily seen in DX reception.

A*s*i*m*o*v

.... Reactance: your imaginary friend.
 
N

NSM

Jan 1, 1970
0
| Weather doesn't have an effect, but will look at the truck situation here!
| Thanks.

You may have been picking up a signal from a building that has been
demolished. Weird stuff happens! Also, the station may have lost a repeater.

N
 
N

NSM

Jan 1, 1970
0
| sounds like his tuner.
| the low band is screwed up.
| maybe preamp etc.

Best to make sure the signal is good first. If it ain't broke ....

N
 
J

Jamie

Jan 1, 1970
0
Asimov said:
"Fred" bravely wrote to "All" (01 Jan 05 18:53:03)
--- on the heady topic of "TV giving bad reception"

Fr> From: "Fred" <[email protected]>
Fr> Xref: aeinews sci.electronics.repair:5514

Fr> Using rabbit ears works fine around here, but recently channels 2-5
Fr> are too snowy to watch, channel 7 is sometimes OK, and channels 8-88
Fr> are fine. All stations have transmitters on the same mountain, so I'm
Fr> thinking the problem is with either TV or antenna. I have moved the
Fr> antenna all over the room and get some slight improvement but not much.

Fr> Anyone seen this before and know a cause of it? (I have also put a
Fr> different rabbit ears antenna on the TV and same results.)

Fr> Thanks in advance.

Fred,

Try adding a high pass filter to the antenna that cutsoff sharply
below 50-54MHz (ch-2). Seems a lot of devices' SMPS's these days
generate lots of hash into the powerlines that gets radiated and is
easily seen in DX reception.

A*s*i*m*o*v

... Reactance: your imaginary friend.
sounds like his tuner.
the low band is screwed up.
maybe preamp etc.
 
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