[time-nuts] AN/URQ-13 update

[Bob kb8tq]

Hi

> On Feb 27, 2021, at 9:38 PM, paul swed <paulswedb at gmail.com> wrote:
> 
> Well some progress actually made. Ripped the oscillator out of the assembly
> and removed the rest of the material surrounding everything. Now have a
> schematic at least 90% correct. Part of the issue seems to be rotting
> solder joints. After fixing those the unit appears to be on frequency at 5
> MHz and stable. More reassembly has to happen and hard to say what
> additional issues will show up. But that is progress in the right direction.
> The actual oscillator is a 2n914 npn transistor in a Pierce configuration.
> The output feeds an IC amplifier. Guessing a differential amp but the part
> number doesn't show up in any search.

In that era, I’d bet it’s some sort of transistor array.

Bob

> Regards
> Paul
> WB8TSL
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