ATS - 909 Alignment - Spectrograms

Finding trimmers - watching srectrograms.

Where to find T14, VC4, and VC5 (be gentle with the coils and trimmers!!)

ats-909 main board circuitry

 

 

Where to Find TC301

ats-909 secondary board circuitry

 

 

 

Spectrograms below were made using Spectran

 

 

WWV seen in USB mode, 14999 kHz; beat note = 1028 Hz (receiver error = - 28 Hz)

spectrogram of alignment signal

 

 

WWV seen in USB mode, 14999 kHz; beat note = 1007 Hz (receiver error = -7 Hz)

spectrogram of alignment signal

 

 









 

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