W9MWS:
>Update: The INRAD folks and another of the list users tell me that this
filter is a 600 Hz roofing filter and was sold as a kit originally.
It now comes
pre-assembled in a "canned" version as #763 for the Orion.
Almost correct Mike. It's now sold as Inrad #762
and was designed ONLY for Orion. It's a 4-pole 600 Hz
filter designed to be put in Orion's first bank of roofing
filters (9.001500 MHz), not like the 500/250 slots
which are centered on 9.000750 (i.e. like TT 217 & 217,
Inrad 759 & 760). The Inrad #763 is part of the new
Omni roofing filter kit. I would not recommend Inrad's
#352/762 be used in anything but the original Orion.
73, Bill W4ZV
http://www.qth.com/inrad/tentec_menu.htm (see Inrad's
rig recommendations under each filter number)
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