Mark: Have you ever checked the original Orion's frequency response? I
checked the O2 and it's pretty good, although not quite what the specs
implied. I found that the response at 50 Hz with the TX EQ set flat and
L.F. Rolloff at 50 Hz is off 15 dB instead of the 6 dB claimed. It was -7
dB at 100 Hz and -3 dB at 200 Hz. Pretty flat up to where the TX Filter BW
is set. All in all, that's not bad response, but I was not able to flatten
it out with the W2IHY system. It's still better than just about anything
"out of the box" except for the TS-870.
Frequency response on AM is nothing short of amazing: +-1 dB down to 20 Hz!
I checked into the AMI net the other night and net control commented that I
sounded as good as any of the guys running the big plate-modulated broadcast
Chief Technical Officer
Results Radio, LLC
----- Original Message -----
From: "Mark DeBord" <firstname.lastname@example.org>
Sent: Monday, February 13, 2006 5:23 PM
Subject: [TenTec] V2.0 for the original Orion
> Update so far.
> Loaded the beta code on the original Orion. Did a master reset.
> the display is much dimmer and the contrast must be set to about 42. The
> sweep display works great. Mine had the hardware mod already since I
> mine recently. The monitor function works better too; do not have to turn
> the af gain up when listening to my audio; matches the receive level now.
> However, the transmit audio has changed. I just recently bought the w2ihy
> boxes and had my equalization and mic gain on th Orion set to match.
> However, the mic gain must now be reduced to almost 20 with the Studio One
> (which might be good) and the TX equalization is off. Not sure what the EQ
> settings must be set to now. I used to run it at -6 db with the w2ihy
> equipment, but will have to find the sweet spot now. I think I will need
> re-adjust the w2ihy equipment equalization to get my audio back in line. I
> actually loaded the old software back since I did not have time to play
> the transmit audio tonight; will try again later. If anyone else figures
> out, using the Studio One, please post.
> Mark KA4ICK
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