> Was there on-site "cell extender" (bascically two cell-band amps,
> appropriately duplexed, to create a bi-lateral amplifier like the
> dB Products "Prism" series) with one of the coverage antennas
> placed nearby the vault? I offer this as a possible reason - not
> knowing where your 'vault' was or the signal level outside the
> vault ...
>
> Jim

There are cellular towers all around me there, we are in 'downtown'. They
put them on the roofs and move them all the time so I can't keep track but
there was one definitely within 100 meters from where I was. There is no
repeater that I know of there.

It is hard to judge the field outside, we are in a well-covered city and
the S meter stays at 5 (maximum) all the time while you are not in a
basement or such. I haven't played with graphite sheet attenuators and
such to estimate it.

Peter

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