[Premium-Rx] Harris 590

[Bingville Canoe and Boatworks]

The heater in the crystal oven may be getting up to temp too slowly. I don’t know if the PLL uses that TXCO for its time base or not. 

"Who is John Galt"?

> On Jan 31, 2020, at 14:01, Charles Steinmetz <csteinmetz at yandex.com> wrote:
> 
> Cliff wrote:
> 
>> when I hit the test button, I get an ASSy 7 Fault 02 light.
>> I don’t have a clue what that’s for.
> 
> Ass'y 7 Fault 02 is "PLL II out-of-lock."
> 
> In the 1988 RF-590 service manual (Publication Number 10073-0020F), the basic operation of the frequency synthesizer including A7 is discussed at Paragraphs 4.2.2.1 through 4.2.2.9.
> 
> The detailed section on A7 is on pp 258-272 of my PDF copy of the manual.  If you are lucky, you will just need to adjust the VCO frequency and tracking as described.
> 
> Best regards,
> 
> Charles
> 
> 
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