Patrick WD9EWK/VA7EWKMar 26
On the way to the office tonight, I stopped in the Phoenix city park on the DM33/DM43 grid line (112 degrees West longitude) for an ISS pass around 0430 UTC. Park is open until 10pm (0500 UTC); not much for lighting at that hour in parking lot near dog park area. Nice overhead pass for central Arizona, using ID-5100/Elk combo. Thanks for the QSOs!
Show threadPatrick WD9EWK/VA7EWK

"Documentation" for being on the DM33/DM43 grid line tonight, from the GPS display on my Icom ID-5100 & my Garmin eTrex 20x GPS receiver. ID-5100 only displays to 2 decimal places for minutes, where eTrex 20x goes out to 3 decimal places.

Interesting... clocks on the ID-5100 & eTrex 20x are supposed to be set to the GPS signals, yet the clocks in the picture differ by almost 3 seconds. Weird...

Mar 26 at 8:05amWeb
Show threadNikolai 📡 🛰️ VE3NKLMar 27
@wd9ewk Some old GPS-capable devices had the number of leap seconds hardcoded in the firmware. 2009-2011 was when we had 3 leap seconds less... GPS satellites transmit the # of leap seconds every 12.5 minutes. Whether this information is used is up to a device.