Having spent 10 years in the elevator industry, you'll find that new
equipment is mostly solid state with relays only controlling the safety
circuit and motor controls. The controller is encliosed in a steel cabinet
and as a result is ussually well shielded.

That being said, you did not indicate what type of drive system will be
installed, SCR (DC motors), AC V3F Drive Etc or will the current drives be
left as is. These could potentially be a source of noise depending on the
manufacturer. Motor/Gen set (older DC drives) could be very noisy when the
brushes are worn. Newer AC V3F drives could be noisy when DC injection is
used for braking and holding the elevator at the floor (noise from the motor
windings as they vibrate at who knows what frequency).

Most mechanics will be willing to share the info when you see them, coffee
helps.

Remember the the elevator guys don't mind the sudden stops only the little
jerks in between. Hi. Hi.

73's
Guenther VE3CVS


"ml" wrote in message
...
today the elevator room on the roof is all relays, looks like a
frankenstin set from the 50's wouldn't be surprized if the relays are
actually from 50's either

my antenna is mounted on the wall (brick) of this room

currently i don't get any noise (electricial)



Just found out the building is thinking of adding new elevators and
modern controlers

so now i wonder, should i suspect that they are all rf tight in metal
housing's or a rf nightmare?


anyone have any experience w/how much 'noise'/hash they might throw ooff?

tnx

m