Note that changing the input level settings will require you to run the
Level Calibration routine in order to show correct signal levels.
Eric
Robert McGwier wrote:
Joe:
On those connections where you are using an external preamp, specify
the ONE INPUT
where the microphone is connected at +4 dBu. For radio inputs, and
Med Preamp
(the right mode for 20 meters and down), -10dBv is right for the
radio inputs to the
D44 for most use. On contest weekends, if you believe you are getting
some overload
on the A/D, then change them to + 4dBu since the noise floor will be
raised by the
hundreds of stations, phase noise, splatter, etc. anyway.
Bob
Joe - AB1DO wrote:
Bob,
Are you describing the situation with or without an external microphone
preamp. Reason I ask is that I am using a Behringer mixer with built-in
preamp that easily delivers +4dBu and I therefore have In3/4 set to
+4dBu.
Joe
I think the optimal receiver settings for the unmodified SDR-1000 in use
with the
D44 are
1) Preamp set to Medium
2) Bring up the Delta 44 M-Audio Control Panel
Click on the Hardware tab.
Set I #1 through #In4 to -10dBv.
3) Recalibrate your receiver, image and level settings
If you are on a high band or are doing weak signal work, set preamp to
High.
Bob
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