Great detective work. Thanks for posting your results.
----- Original Message -----
From: "Ron Castro" <firstname.lastname@example.org>
To: "Discussion of Ten-Tec Equipment" <email@example.com>
Sent: Tuesday, February 07, 2006 6:42 PM
Subject: Re: [TenTec] Orion firmware statistics and drift info
> 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
> 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
> 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
> longer and could slow long-term oscillator drift as well.
> I'll report back to the list what I find.
> ----- Original Message -----
> From: "Martin, AA6E" <firstname.lastname@example.org>
> To: <email@example.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
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