CCWN76:96



Ic5 through IC 8 is another phase-locked loop which generates
a signal from 50-000 to 50.990 kHz. The VCO in IC6 runs at
500 kHz. IC7 divides this signal by a switch-selected number
from 5000 to 5099 and delivers the 100 Hz output to pin 3 of
i-16. A 100 Hz signal derived from the frequency standard
through D'11 and IC8 goes to pin 14 of IG6. This reference and
the divided-down VCO signal are compared in the phase detector
0
'which delivers a control uoltage to the VCO as before. With
this overall arrangement, you can choose 100 GGd frequencies
starting at 14-050 000 MHz, and your output will be as spectrally
pore as the crystal oscillator and as stable as your standard.


Would you like circuits boards and parts kits for these items?

Please write and include a check for $50 as a deposit. If

I get at least 10 such requests, the project gets underway.

Otherwise I'll return the deDosits and each one builds for

          I
himself. The total cost for the two kits is $175. The
boards will slide into a Pomona "Blue Box"., but the box is
not supplied unless you ask for it ($20 extra).


I Ray



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