"gb" wrote in message
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"ml" wrote in message
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hi

Realize this is perhaps a long shot but cavities and filters arent my
bag...

Your approach (IMHO) will not work and should not be pursued.

Rather, have a discussion with building management. You would want to run
ONE cable from your apartment to roof and your antenna on the roof. Your
busiling management has likley been appraoched by other tenants (for
mounting satellite dishes - erlier tie-in) AND by cellualr phone companies
looking to place antennas on their roof. However, they are waving $$ in
front of their eyes (which should reduce your rent or increase their profit)
... you pay rent (eave your $$ ) during discussion.

gb