[TenTec] Questions about NR i.e. Orion

[Lee A Crocker]

Bill,

Actually I did measure the bandwidth at the "10hz"
setting and "25hz" setting.

For the 10hz filter:
with a 50mV signal injected reading -69.8 dbm at the
center freq (the peak reading)I measured the bandwidth
at 3db down as 40hz, at 6 db down as 64hz and at 60db
down (-130 dbm) as 180hz.  Below this level I could no
longer precieve any signal and I hit my noise floor
which was -139dBm

For the 25 hz filter:
with the signal injected at 50mv the peak read -69.9
dbm.  I measured a 3db bandwidth of 44hz, a 6db
bandwidth of 63hz and a 60db (-130dbm) bandwidth of
178 hz.  The signal then dissappeared into my noise
floor of -138 dbm.

True enough these are not 25 hz and 10 hz filters. 
They are 60hz filters.  I have no problem receiving
any CW signal using these filters.  And there is no
ringing.  So far I'm pretty impressed.

73  W9OY


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