Merle, I'd also add this to your list:
9. With a strong (s9+) cw signal nearby, the subreceiver presents two
weak broad phantom signals at +/- 2Khz from the s9 signal's
fundamental. The strength of the phantom sigs varies a bit with cw
bandwidth and dsp filter length. This is not observed with v1
firmware and the v2 changes to the dsp filtering could be the culprit.
I use the subreceiver a lot on topband, and this drives me nuts due
to the presence of a lot of strong east coast signals most of the
time. Another reason I use v1.
73,
Barry N1EU
On 11/3/06, Merle Bone <merlebone@charter.net> wrote:
> Jerry (KG6TT) said:
> I am sorry, I simply don't get it. Once I fixed "my" problem with the audio
> chain I have had absolutely no operating issues with version 2.059d. In fact,
> it is the best performing Orion yet."
> -------------------------------------------------------------------------------------------------------------------------------------
>
> As N8RA said, I also find V1.373b5 to be much better for my use of the Orion.
> Some of the issues I find with the V2.059d code are:
>
> 1. The notch filters are outside the AGC loop so even though a signal is
> "notched out" of the audio passband it still pumps the AGC and desensitizes
> the radio.
> 2. The V1.373b5 Speech Processing provides 4-6DB more "talk power" then the
> V2.059j Speech Processing. This area was improved, IMHO, in the last release
> but is still woefully behind the V1 Speech Processing.
> 3. The AM receive bandwidth is too narrow in V2.059j to receive both the
> upper and lower AM sidebands so you have to receive using one sideband or a
> very narrow AM audio signal.
> 4. The audio level of the Aux output and the Headphone output is very low in
> V2.059j compared to other V2 releases - I think this was just a "muff." This
> requires me to use the Mic soundcard input for MTTY and makes it harder to
> adjust and makes the signals subject to greater noise pickup.
> 5. The CW QSK is much faster, 30%, on the V1 code then the V2 code.
> 6. The AGC operation seems much smoother in V1 then in V2. Not sure what the
> "envelope detection was supposed to do for the AGC but I don't think it was
> good??
> 7. The noise reduction on V2.059d does more attenuation then noise reduction.
> I find the V1 noise reduction better - although this is a marginal feature.
> 8. It now appears that there may be more "known bugs" - see recent post about
> sub-receiver being in AM mode - in V2.059d then in V1.373b5.
> There is an RF spike on the transmit leading edge if you use the RX antenna
> input. There is an issue with the Orion computer connection output data speed
> - and others. Since my Orion had the 10 or 11 board upgrades done last month
> at the factory, V1 has performed with very good stability.
>
> I know that many people don't use many of the features on the Orion, or any
> radio. And if you don't work in signal environments where you use a manual
> notch then you really don't care that it works like an audio DSP filter. If
> you don't listen to AM then you don't care that the bandwidth is too narrow.
> If you don't seriously work on SSB DX or SSB contesting then you don't care
> that the speech processing isn't as good on the V2 code and that the AGC
> appears to generate distortions and pops. And on and on. On the other hand,
> as Barry (N1EU) said, I think there is still a lot of "unfulfilled potential"
> in the Orion. In some cases I think the lack of a V1 alternative, to compare
> performance, leaves the idea that "it is as good as it can get."
>
> I am hoping to see the V3.xxx code one of these days with great overall
> performance!! But I would be very happy with an improved V2.XXX firmware
> release.
> 73,
> Merle - W0EWM
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