Please find the attached schematics in expressPC .sch format for the following.
WWVB receiver MAS6180 CMAX CME6005 available from Brent KD0GLS Remodulator Digital version using 2 74HC series chips Analog experimental version using 3 X 2n3904 transistors What I have run across is that the spectracoms are indeed picky. You must be under .75 Hz for the unit. Several xtal I have simply would not go there but the 60 Khz xtals are cheap and available by Ebay from China. I picked up 50 units for a few dollars and cherry pick them. The Xtals will only move a few Hertz no matter what I really did. On the experimental remod. It indeed has a slow startup time approx 15 seconds and thats actually expected. Regards Paul WB8TSL
CME6005 receiver 07062013.sch
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MAS6180 receiver 07062013.sch
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Remodulator 3 transistor experimental 07062013.sch
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Remodulator 07062013.sch
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