I forgot I had to go to a school open-house last night, and didn't get home
until late, so by the time I got on 40, everyone was gone.
The settings look interesting. I'll try doing frequency response testing if
I get a chance with those settings, although I found it is pretty hard to
get the O2 to hold an audio level without it 'hunting' with its digital and
analog gain controls and trying to correct the level, even when it's way
down. One thing I did find on my earlier testing is that the TX EQ
settings, which are calibrated in dB, read much higher than the actual
equalization. IOW, setting it at +6 dB is more like +3 dB at the cut-off
frequency when actually measured.
Ron N6AHA
----- Original Message -----
From: <Kc9cdt@aol.com>
To: <ronc@sonic.net>
Cc: <tentec@contesting.com>
Sent: Thursday, March 23, 2006 5:31 AM
Subject: Re: [TenTec] OII Audio testing/optimization
Ron,
I guess I missed you last night....
I did hook up with another OII owner, Charles K5UA, and Ron N9AU on the
side
(coild not copy Ron).
We did some extensive on air audio testing with my OII and Heil Goldline
with
excellant results.
Net results: Both Charles and Ron have Orion II's with a major audio
problem
that is hardware (there have run the same V2 as I am). Charles has sent
his in
to TT and it's been there quite a while, I beleive Ron is planning on
sending
his in soon?
Looks like some OII's have a problem and some don't.
OK, now to add some feedback for you on our test last night:
My OII with Heil Goldline e element Mic with standard Heil Yaesu cables:
Wide setting (Studio)
Gain = 65
SP = 3
BW = 3150
Rollogff = 150
TX EQ = -8
Resuilted in good audio.
Narrow Setting (HC5) NOT HC4
All settings the same EXCEPT TX EQ = +10
Resulted in a nice DX audio
What did we learn.
1) Some OII's must have a HW problem, as some sound good and some can't be
adjusted to sound good.
2) If you run SP any higher than 3 you get high end audio distortion and
crackling sound.
3) In our opinions even with the OII setup as well as we can, Original
Orion
still sounds better!
4) We hope TT puts the audio 'STUFF' back he way it was in Orion. (Along
with
some other things as well, like NR, NB, AN)
5) TT has some kind of QC issue with OII Audio HW, as some work OK some
don't.
This is all FWIW and is a result of real life testing, not type
engineering
analysis with test equipment.
I hope it helps some folks to sort out any audio issues.
Net result if you can't get your audio to at least sound OK with known
good
station setup (Mic, No RF feedback etc) then send her back to TT.
73,
Lee, KC9CDT
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