Hi Brooke --
Yes, all the chips on the board are low power devices. I'm measuring
the receiver as drawing 0.9 MA at about 2.3 volts.
Update -- I moved the receiver and farted around with the wiring, and
now the S-Meter is off the peg, responds to orientation changes, and I
actually got a couple of indications of bits being decoded. So, I think
the hardware is working fine.
However, there must be a lot of local interference as decoding is very
erratic and I'm nowhere near getting a full sequence. I don't have any
experience at this location with WWVB reception, so I'm not sure what to
expect. At my previous Ohio house a mile south of here the signals were
very good and there were no noticeable problems with the Spectracom
receivers (may they rest in peace). Next step is to experiment with
receiver placement.
John
----
On 03/30/2018 03:15 PM, Brooke Clarke wrote:
Hi John:
The U4226B chip operates at very high impedance levels in order to
minimize battery drain in its main application, battery powered clocks.
So some sort of buffer is needed on all the output pins.
The 333 model, with the analog meter, was made for the folks working for
WWVB as a way for them to know the transmitter was on the air.
http://www.prc68.com/I/timefreq.shtml#WWVBrcvr
http://www.prc68.com/I/Loop.shtml (WWVB)
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