A panel mounted attenuator
from a UHF wobulator that covered 420 to 900Mhz. should be very usable from LF
through to 1Ghz.
It is believed to be 50ohm impedance and therefore will
be usable with 50ohm receiver or signal source.
Unfortunately some of the
silver plating has peeled at the back of the unit, see photograph for
condition.
Panel mounting screws provided
as these are US thread sizes.