WC1M:
The Orion has a
famous flaw where it switches in an amplifier to compensate for losses in
the 500 Hz and 250 Hz roofing filters, but the gain is too high and the
dynamic range goes all to heck.
Dick I believe the flaw in Orion was actually routing the
signal first through the 20
Speaking of roofing filters and DR3... I was browsing through the spec sheet
of the relatively new Hilberling PT-8000 super-rig yesterday, just to see
how it compares. This very impressive transceiver sells right now for around
15,000 USD. It uses conventional up-conversion to a 1st IF
After reading this reflector for a while, I'm confused by all the discussion
about 8-pole and 5-pole roofing filters. Or, perhaps some of you are
confused about the way roofing filters work. Here's a good article that
describes how roofing filters work and why more poles might not be better:
3 matches
Mail list logo
