I've just started working on the MAX-M8W-0-10 and have designed and built a small breakout PCB (see picture). The PCB uses a small 11 mF superCap as the Vbackup with theoretical life of 30 minutes. I hooked it up to a USB-Serial adapter and monitored its output using the free Ublox U-center application.
My first impressions are WOW! In maybe 10 seconds* from cold, I had a fix with 6 satellites and that was with the antenna pressed against the inside of the window of my basement workshop (so I can only see half the sky at best). After a minute I had 14 to 16 satellites, some GPS, some GLONASS, 1 SBAS, and a WAAS; the max I've counted is 19 so far (I think). I have made zero changes to the configuration, just taken the OOTB setup.
[Edit] * The above 10 second time was not real; the module was being powered from a USB-Serial adapter it was hooked up to; that adapter was plugged into a USB 3.0 hub which, it seems, gives power out (with no LEDs lit) even when my PC is powered off!
Some questions and some ideas if I may...
1. How good is this accuracy-wise? Is it really good (compared to a Navsync CW25 for instance) or am I just out of date?
2. How accurate is the positioning? I Have seen the PDOP and HDOP numbers in U-center which are 1.2 and 1.5 in my early tests but how do I relate them to accuracy?
3. The time pulse signal output is configurable from 1 Hz to 10 MHz, given the MAX-M8W-0-10 uses an internal TCXO, is this anywhere good enough to be used as a GPSDO reference signal for test equipment?
4. Is the WAAS coming over a satellite or what? [EDIT] WAAS (wide area augmentation system) used to come over terrestrial transmitters but now it (also?) comes over dedicated geosynchronous satellites so I assume that the WAAS channel that pops up on U-center is indicating reception from one of those WAAS satellites.