[The previous message concludes here.]                               2/2

     If the customer could cope with the rest, the `2903-FM Interference
Eliminator' alone could be bought from MFCo;  it provided an attenuation
range of 25 dB minimum and phase adjustment exceeded 180 degrees.  If it
was necessary, a BandPass filter would keep strong adjacent signals away
from its input and losses could be compensated for through an amplifier.

     It was said to be effective against co-channel reception, ghosting,
harmonic or other non-TV nuisance, strong adjacent FM carrier plus wide-
band noise.  The `2903-FM Interference Eliminator' could be tried for 80
$ a month (thru rental with a 80 $ security deposit);  the unit sold for
492 $ U.S. in May 1988 - making it an expen$ive cure (bottom-line)!  %-o

     All of these devices were specified for a 75 Ohms impedance and for
type "F-61" connectors in catalog C/87.  Model `2903-FM' included a free
operating manual, for the owner's convenience...  Perhaps my enumeration
of numbers will sound like a "Smart-Assed Non-Answer" to some guys but i
honestly think it couldn't hurt to share the findings of people who made
money out of their expertise since 1968.  This is the best i could do to
help Joe with his problem, hoping that some of it fits into the picture.

                                   :)

     A quick ~WEB~ search lead me to http://www.microwavefilter.com/ and
once i was there i found that the `Series 3634FM Bandpass Filters' still
was carried on last year;  figures vary somewhat but this starting point
should tell Joe what sort of solutions other guys explored before him...

MR> From what I've deduced in my readings about radio propagation, the
MR> answer must be that in winter time the trees are bare and the
MR> microwaves can slip through but in summer the foliage carries a lot
MR> of water which absorbs the radio energy.

     Or sometimes a signal seems to be faint when there's too much input
like some bridge's reflections as those from the one in Cartierville (it
could get worst during the winter, if i'm not mistaking).  I can imagine
some overload situation where foliage would actually help, i think:  the
trouble i had trying to tune to CHOM when i was walking on Mont-Royal, a
few days ago, tells me everything is relative as i can hope for a better
reception over here, back on my balcony in Trois-RiviŠres, than right on
the spot!  At times line-of-sight is too much, at others it's foliage...

     That's why i must agree when one argues that it's no exact science!

                                                           Salutations,

                                                           Michel Samson
                                                           a/s Bicephale


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