[auspiv]

1 - I like to consider myself an expert eBay-er (my ebay account can legally buy alcohol in the US, and I am myself only 36 years old) but I have not found any ZED-F9P for less than $90 ish. I am aware of the Quactel (sp) modules, and am considering a set for some RTK experiments. Is that what you're referring to?

2 - I've thought about replacing with ocxo but the pads are tiny. My soldering skills aren't nearly as good as my ebaying skills.

3 - it is outputting 16 Hz, chrony is doing dpoll -4 poll 4.

4 - I have done tempcomp (it is not active for the post referenced by this HN post). Fun stuff and probably my next writeup.

[tw1984]

there are good deals on ebay atm. e.g. brand new ublox zed-f9p dev board pin compatible with the M8T receiver you are using. it also comes with dual frequency antenna. it is not a second hand chip, but a brand new module ready to be plugged into your system.

www.ebay.com/itm/277500530946

I usually buy my second hand electronics stuff from www.goofish.com, the home base of all those "From China" ebay vendors.