[TenTec] Orion tuning rates - Further thoughts

[Bob Henderson]

A useful contribution Bill, as expected.

If that's the trade-off, then it's a very fair one IMO. Though at this 
stage we're guessing.

Bob, 5B4AGN, P3F





Bill Tippett wrote:

> 5B4AGN wrote:
> >The behaviour I see in the Orion synth is not common to all synths, it
> is peculiar to my Orion. Whether that makes it an Orion design
> characteristic affecting others or means I have a faulty synth in mine I
> currently don't know.
>
> ARRL wrote: http://www.arrl.org/members-only/prodrev/pdf/pr0401.pdf
>
> >Figure 3—Worst-case spectral display of
> the Ten-Tec Orion transmitter output
> during composite-noise testing. Power
> output is 100 W at 14.25 MHz. The carrier,
> off the left edge of the plot, is not shown.
> This plot shows composite transmitted
> noise 2 to 22 kHz from the carrier, the
> lowest we’ve measured for a multiband
> transmitter.
>
> Related? Could be that the excellent
> phase noise performance is related to the
> synthesizer loop settling time. Don't know
> for sure but it could be another of those darn
> engineering tradeoffs!
>
> 73, Bill W4ZV
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