# GPS upgrades

**URL:** https://community.cambiumnetworks.com/t/gps-upgrades/55570
**Category:** ePMP
**Created:** [March 30, 2018, 12:19am UTC](https://community.cambiumnetworks.com/t/gps-upgrades/55570 "2018-03-30T00:19:43Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Nathan\_Dothager](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/nathan_dothager/32/11743_2.png) [@Nathan\_Dothager](https://community.cambiumnetworks.com/u/Nathan_Dothager)
#### Post date: [March 30, 2018, 12:19am UTC](https://community.cambiumnetworks.com/t/gps-upgrades/55570/1 "2018-03-30T00:19:43Z")

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Looking for clarification on a KB on GPS sync here:&nbsp;[HERE](https://community.cambiumnetworks.com/t/epmp-gps-firmware-upgrade/54141)

I didn't know there was an update for the GPS on ePMP 2000.&nbsp; I knew about the early issues with the ePMP 1000 models but I thought that firmware upgraded the puck firmware.&nbsp; Does this new "2nd gen" GPS upgrade update the puck or just the internal GPS sync in the radio?&nbsp; Is the puck just the antenna for the internal GPS chip?&nbsp; If so, I never understood this.&nbsp; Just looking for some clarity.&nbsp;&nbsp;

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### Author: ![Eric\_Ozrelic](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/eric_ozrelic/32/16188_2.png) [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic)
#### Post date: [March 30, 2018, 2:43am UTC](https://community.cambiumnetworks.com/t/gps-upgrades/55570/2 "2018-03-30T02:43:05Z")

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The puck is just a ~~passive~~ active antenna... there's not a chip in it. The internal GPS chip&nbsp;can get a signal from either the internal antenna or the puck antenna.

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### Author: ![CWB](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/c/c89c15/32.png) [@CWB](https://community.cambiumnetworks.com/u/CWB)
#### Post date: [March 30, 2018, 6:08am UTC](https://community.cambiumnetworks.com/t/gps-upgrades/55570/3 "2018-03-30T06:08:54Z")

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Cambium can correct me if wrong, but if like other GPS systems, there isn't a GPS chip in the pucks... but there is a LNA (Low Noise Amplifier) inside these pucks. They are powered by 3-5 volts from the the GPS chip inside the ePMP and should give about 28db of gain making them an active antenna.&nbsp;

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### Author: ![Nathan\_Dothager](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/nathan_dothager/32/11743_2.png) [@Nathan\_Dothager](https://community.cambiumnetworks.com/u/Nathan_Dothager)
#### Post date: [March 30, 2018, 12:02pm UTC](https://community.cambiumnetworks.com/t/gps-upgrades/55570/4 "2018-03-30T12:02:51Z")

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Thanks so much for your replies.&nbsp; I never knew that. Thanks!

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### Author: ![Dmitry\_Moiseev](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/dmitry_moiseev/32/12076_2.png) [@Dmitry\_Moiseev](https://community.cambiumnetworks.com/u/Dmitry_Moiseev)
#### Post date: [April 1, 2018, 12:06am UTC](https://community.cambiumnetworks.com/t/gps-upgrades/55570/5 "2018-04-01T00:06:53Z")

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Hi!

The update updates only internal GPS module, not the puck(although it is active as mentioned above),

Dmitry