[TenTec] Omni VI freq instability, 30m only
Ken Brown
ken.d.brown at verizon.net
Sat Apr 9 23:26:56 EDT 2005
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>The VI has a PLL that incorporates those single crystals/band in a
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>aRE YOU SAYING THE BAND CRYSTALS ARE PART OF THE pll?
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There is more than one PLL in the Omni VI. The 5.0-5.5 MHz VFO is a PLL
system. The "Band switching oscillators" are also PLL controlled. They
are separate PLL systems, only the RF output of the two are mixed
together. The is no interconnected PLL control of both of those oscillators.
In the Omni VI manual, regarding the band switching crystal oscillators:
"A PLL circuit on the Logic Board ....... sends a D.C. correction
voltage back to the oscillator....."
DE N6KB
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