Interesting, but what is the lowest resolution you can read on the
display? If it's 10 Hz increments, then you're within the digital
accuracy of the display, which is always +/- 1 count. If it's 1 Hz, then
that's a different matter.
73, DUane
On Tue, 7 Feb 2006 16:42:50 -0800 "Ron Castro" <ronc@sonic.net> writes:
> Martin:
>
> Thanks for posting that information. I have uploaded the new
> version, and
> AM works fine now, with 100% power equaling 40 carrier as measured
> with a
> Bird 43 and dummy load. I also checked the CW output since someone
> had
> mentioned that on the list recently, and found that key-down output
> power is
> dead-on 100 Watts all bands. I have no way of measuring PEP.
>
> BTW, I read your posts about the slight Orion drift problem, and
> found
> similar results on the O2, although the O2 seems to stabilize within
> about
> 35 minutes. Mine still is 10 Hz high on 15 MHz (reads 10 Hz low on
> zero
> beat), so I'll probably set it right on soon. I put a temperature
> probe
> from a Protek 608 DVM inside the chassis near the master oscillator
> module
> and it shows a total warm-up of 45 degrees F over the shack
> temperature,
> nearly exactly what you had estimated. I'm looking at the meter now
> and
> it's reading 114.8 F in a 69 F shack after running about 90 minutes.
> Last
> night, I tracked the frequency drift against the temperature and
> found a
> correlation of around +.7 Hz per degree F (again with zero-beat
> reading -.7
> Hz/degree) on 15 MHz. Once warmed up, the radio stays rock stable,
> within
> +- .5 Hz at 15 MHz.
>
> This information leads me to believe that this minor issue may be
> cured by
> simply putting a small fan on the chassis partition just in front of
> the
> oscillator module and blowing cool air across it. This should
> substantially
> reduce the temperature build-up in that part of the chassis, and if
> my
> theory is right, after about 10-15 minutes of warm-up time, the
> frequency
> should stabilize with no perceptible drift. Should make the
> components last
> longer and could slow long-term oscillator drift as well.
>
> I'll report back to the list what I find.
>
> Ron
> N6AHA
>
> ----- Original Message -----
> From: "Martin, AA6E" <martin.ewing@gmail.com>
> To: <tentec@contesting.com>
> Sent: Tuesday, February 07, 2006 3:03 PM
> Subject: [TenTec] Orion firmware statistics
>
>
> > Here is a graph showing the documented TT firmware versions for
> Orion
> > and Orion 2 versus months since introduction:
> > http://www.aa6e.net/images/oristats.gif . Versions for the first
> > Orion were running one a day for a while at the beginning! (Most
> were
> > not released.)
> >
> > The numbering methodology may have changed with Orion 2. I.e.,
> not
> > every recompilation gets numbered? I can't tell. Maybe they've
> > learned something in 3 years!
> >
> > 73 Martin AA6E
> > --
> > martin.ewing@gmail.com
> > http://blog.aa6e.net
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
> >
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
Duane Calvin, AC5AA
Austin, Texas
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