lt4120 Snapdragon X5 LTE module turns off with antennas plugged in

[DesertSling]

lt4120 Snapdragon X5 LTE module loses power when antennas are plugged in.

I am using a Dual Q h721-v6 router and a mpci-e to usb lte adapter.

Measuring the antenna's shows no resistance however both devices turn off the module when the antenna are plugged in.

I have considered current and now use a 2 amp power supply for the router.   

I tried searching if this is normal behavior without finding a similar issue.

windows 10 device manager shows device with the main 5 and Aux 6 jacks open, otherwise it cycles on and off as if I am disconnecting the usb.

As far as I know the parts with the exception of my laptop are all new, or NOS.

Both devices have updated firmware. The Dual Q is using the most recent release of openwrt

[Irfan_06]

Hi @DesertSling,

Welcome to the HP Support Community.

Thank you for posting your query. I will be glad to assist you.

I see that you are facing an issue with your Laptop.

To understand the issue and help you, please share the details listed below:

Note: Do not share any of your personal information such as serial number, phone number, email ID, etc., on your public post.

- Exact model number/product number(SKU number) of your HP Product (Click here for information on how to find the model number/product number).

- Error messages (if any) on the unit.

- When was the last time it was working fine?

- Were there any changes made to your PC recently?

Take care and have a great day ahead!

Irwin6

HP Support