The clock and GPS kits are neat. Of course, I can't leave well enough alone so I am working on a portable gps/clock powered by four AA batteries with front panel switches to turn off the GPS and backlight and pots to control contrast and backlight brightness. From the various data sheets, it looks like the GPS board needs about 35mA while acquiring a signal and 25mA while tracking and the clock board, with the backlight turned off, needs 5mA. I think that the backlight requires 150mA at full brightness but different data sheets seem to say different things so I am not sure, So, question one:? can anyone confirm my estimates with measured currents used by GPS and clock kits?
Second question: since the GPS board uses 74ACT08s to drive the signal lines, I can drive more than one TTL load with the 1PPS and TxD lines, right?
Third question: I am guessing that the clock kit iinterrogates the GPS to get the GGA data frame. Is there any reason why I can't passively listen for decode that frame with another device?
73 de bill K7WXW
bill K7WXW