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Yes, especially since I contacted the original manufacture of those crystals and they have told me they will only make 50 piece runs... Since I don't see the community restoring 50 Hickok pattern gens, I don't think Bliley will be getting any of my money but you never know- maybe they will find some stock on the shelf. I'm not holding my breath.
They don't even make anything under 1mhz anymore, so that makes the 315khz one unobtanium. Manual: http://bama.edebris.com/download/hickok/660/660.pdf
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Evolution... |
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Possibly more accurate to get a 31.5khz crystal and use a PLL to scale it x10. The 555 has way too much drift to be used in this kind of application.
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Not saying it's elegant, just a way to run without a crystal. |
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Aligning The Hickok 655
MY previous entry indicated the Hickok 655 is producing a marginally acceptable color bar pattern on both the 21CT55 and Sony. However the color bar waveforms indicate a total mess! The Hickok 655 has 19 pots and 6 switches that I "adjusted" by intuition. What is needed is the official Hickok 655 initial setup procedure. Surly this document must exist somewhere possible included in the instruction manual or in some member's memory? Anyone attempting a precise alignment of the two wideband RCA CTC2 CTC100 and CTC2B 21CT55 must be aware that precise setup of the color matrix requires a bar generator having both Q and I bars for the CT100 and both Q and B-Y bars for the 21CT55! Both RCA and SAMS procedures insist on using bar generators that provide 100% saturated R-Y, B-Y, "Q" and "I" video signals. The RCA WR-61A and the Hickok 600 series would be exceptable.
So, any suggestions how I can obtain this information would be appreciated. |
Audiokarma |
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