Roof Antennae intermittent signal strength

jesse405

DTVUSA Rookie
#1
I set up my DTV converter box several months ago and it has worked fine - reporting around 80% signal strength from my rooftop antennae. Then a few
days ago as I was watching a program on a normally strong station, the transmission just stopped! When I checked the antennae signal strength it was
56%! Since then it seems to hover around 45-55%. I have made NO changes
and no adjustments at all. I am afraid to do a channel scan as I might lose the channels I have. I should mention that I am about 15 miles out in the boonies from the broadcast towers but with no geographical barriers - big hills, etc.
Why would my roof antennae work just fine and then for no apparent reason
go goofy? I thought I was all set for the change over, but now have my doubts.
Any info or hints would be greatly appreciated.
 
Last edited:

divxhacker

DTVUSA Member
#2
Don't be afraid to re-do your channel scans!

The DTV transition is happening now, despite the so-called delay.

You will not lose any channels that are coming in fine without frame errors, unless you are DX-ing stations past the 20-mile safe-zone. DX-ing and DTV don't mix.

There could be other things in the airwaves, like static from arc-welding factories, or a NASCAR motorsports event nearby the transmitters. I don't know which boonies you're in, heh.

Here, I get one station at 50% normally - it's at 40% now, one channel dropped off its 5-channel spread yesterday in my re-scan, but its intended audience won't care about quality drops, as it's still transmitting a more important message than what can be seen or heard: TBN - Trinity Broadcasting Network Line of sight obstructions: 22 Freeway (several miles head-on - it's like my TV is in the HOV lane, but is crowded off the wrong exit.)
 
Last edited:

Tim58hsv

DTVUSA Member
#3
I set up my DTV converter box several months ago and it has worked fine - reporting around 80% signal strength from my rooftop antennae. Then a few
days ago as I was watching a program on a normally strong station, the transmission just stopped! When I checked the antennae signal strength it was
56%! Since then it seems to hover around 45-55%. I have made NO changes
and no adjustments at all. I am afraid to do a channel scan as I might lose the channels I have. I should mention that I am about 15 miles out in the boonies from the broadcast towers but with no geographical barriers - big hills, etc.
Why would my roof antennae work just fine and then for no apparent reason
go goofy? I thought I was all set for the change over, but now have my doubts.
Any info or hints would be greatly appreciated.
Was there just one channel that went bad or did they all?
If it's just the one channel the tv station may be doing some work on the tower. Call them and ask.

If it's all channels it could be a bad connection between the antenna and converter box. Could be that the 300/75 ohm balun has come lose from the antenna.

Good Luck.
 

jesse405

DTVUSA Rookie
#4
update

Thank you for your responses.
I forgot to mention that it sometimes goes back up.
Last night after posting I checked and the antennae
showed 77%! Again - no physical changes on my part.
The individual stations vary - but what I am talking about
is the Antennae signal as indicated by the meter in the
menus on the box - the one with the meter tone.
I will check the Ohms converter - but looking at it from
the ground - it looks good. (Not with one lead flapping
in the wind or anything.) Oh - the boonies I am in is
east of OKC.
 

Aaron62

Contributor
Staff member
#5
Thank you for your responses.
I forgot to mention that it sometimes goes back up.
Last night after posting I checked and the antennae
showed 77%! Again - no physical changes on my part.
The individual stations vary - but what I am talking about
is the Antennae signal as indicated by the meter in the
menus on the box - the one with the meter tone.
I will check the Ohms converter - but looking at it from
the ground - it looks good. (Not with one lead flapping
in the wind or anything.) Oh - the boonies I am in is
east of OKC.
Have there been fluctuations with weather? Snow, rain, clouds? :cool:
 

jesse405

DTVUSA Rookie
#9
Weather?

Aaron
there was a bit of weather ... hmmm. I will start monitoring this activity...
see if I can correlate signal strength with weather changes.... thanks...
Andy
Which SC mountains are you in? I moved out here to OK after 20yrs in
Santa Cruz area... the last 12 in Boulder Creek. I imagine the transition
is going to be pretty hairy there... at least you have the cable option there
in most places... out where I am it's the air or a satellite!
 

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