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Cream of the Crop 3
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NOISE
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1994-01-03
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12-16-93 Line Noise
If the characters that appear on the screen after you connect are ALL
illegible, then the following does NOT apply. If Some parts of words are
readable, then the following probably is the problem.
Commonly called line noise, the spurious characters or garbage that
appear on the screen are usually from the central office of the phone
company. It can make a big difference whether you call out or someone calls
'in'. Also there is a difference between calling different areas (area
codes or exchanges) as different equipment will be involved. Calling the
phone company will rarely do any good, because the problem is not on your
line.
However, because the problem is not rare, (in fact common in some
places), operators of BBS and other modem users have come up with a cheap
simple solution which works most of the time.
You can make (or have made) a 'noise filter'. The modem doing the
rec'ving must be the one with the filter. Parts are less than $2.50. You
plug into the modem with a "T" adapter (about $2.50 at Radio Shack) will
let you put the 'filter' on and still use the phone in that jack. (I have
never seen a 'noise filter' for sale. The only device I ever saw that
claimed to stop noise, cost more than $45 and did nothing at all).
##include=c:\text\noise2.tif
Don Hinds - Zoom Tech
##include=c:\text\signa.tif