Addendum to my post: on problem #1, I'm referring to the RX audio. TX
audio (other than more drive needed and processor problem) still sounds
broadcast quality.
Ron N6IE
www.N6IE.com
----- Original Message -----
From: "Ron Castro" <ronc@sonic.net>
To: <tentec@contesting.com>
Sent: Tuesday, April 13, 2010 6:41 PM
Subject: [TenTec] Orion II v 2.042A: Not Ready for Prime Time!
> Here are a list of problems I found right off with the v. 2.042A, even
> after doing a battery reset and two master resets and memory clear:
> 1.. Very noticeable distortion on all audio. Sounds like overdrive in IF
> or DSP section.
> 2.. AGC hang in AF AGC. S-meter goes up and never comes down! At same
> time, RF gain goes down and does not come back up. If you manually turn
> the RF Gain all the way to 0, then back up to 100, the radio is
> essentially muted. This will not happen if the "AGC Hang" setting is 0,
> but then distortion is really bad.
> 3.. NR does not work in AF AGC mode. Does seem to work well in RF AGC
> mode.
> 4.. Much more audio drive needed on AUX input for SSB. It looks like
> about 10 dB more.
> 5.. AM carrier= 1.25 Watts max! That's at 100% PWR setting.
> 6.. FM carrier= 6.4 Watts max.
> 7.. SSB Speech Processor gives only around 50 Watts max peak output. You
> can get it up to 100 Watts when you crank it to "way beyond reasonable
> distortion".
> 8.. Could not find any sort of S-Meter calibration
> Here are the good points so far:
> 1.. Side tone is louder and spot level is too.
> 2.. Waterfall display is much improved.
> 3.. Difference in frequency between Main and Sub improved, but still not
> "phase locked". I detect about 0.1 Hz differential which should make it
> fine for true diversity antenna work.
> 4.. In RF AGC mode, the NR really does seem improved, although it's hard
> to tell with the audio distortion mentioned above.
> So that's the good, the bad and the ugly of it! I'm QSYing back to v.
> 2.039d, the last one that worked right...
>
> Ron N6IE
> www.N6IE.com
> _______________________________________________
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> TenTec@contesting.com
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>
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