110 ft
From: Af [mailto:[email protected]] On Behalf Of Josh Baird Sent: Tuesday, January 26, 2016 10:23 AM To: [email protected] Subject: Re: [AFMUG] ePMP GPS woes 25V at the bottom of the tower? How long is the cable run? On Tue, Jan 26, 2016 at 10:21 AM, Andy Trimmell <[email protected]> wrote: We just put the 2 ePMPs are their own dedicated PSU. They’re PSU was dialed to exactly 25V From: Af [mailto:[email protected]] On Behalf Of Josh Baird Sent: Tuesday, January 26, 2016 10:21 AM To: [email protected] Subject: Re: [AFMUG] ePMP GPS woes What power supply are you using for your CMM? Is it 24V or 29-30V? How long are the cable runs? On Tue, Jan 26, 2016 at 10:16 AM, Andy Trimmell <[email protected]> wrote: So we’ve come to the conclusion that even if you’re using CMM as your timing source the AP still continues to use the onboard gps if its plugged in. We have 2 Aps on the same water tower. Both using CMM for their timing. Both of them also have their Cambium supplied GPS antenna plugged in (emergencies). One AP is running 2.4.3 works fine with GPS antenna plugged in and using CMM for timing. One AP is running 2.6 can’t see satellites because the tank is blocking its view. Is on CMM but will not get timing from CMM no matter what I do. Obviously our next step is to climb the water tank and remove the GPS antenna so it stops confusing itself but it’s too windy today to climb. If I’m using CMM for my timing why does it care about the cambium supplied GPS antenna? It should be disabled when I switch it to CMM. I’ve put 2 new Aps on it with same results. Conclusion: 2.6 is confused by having 2 timing sources even though you choose one. If you’re using CMM for your timing for the love of all things fluffy don’t plug in the Cambium supplied GPS antenna.
