1. What is an omnidirectional antenna?

Type of antenna which receives or transmits signals in all directions along one plane with equal strength. Thank to that you can recive signal from whenever you are in particular area. Omnidirectioanl antenna radiation pattern:

IPXY is an Ingress Protection Rating, which defines protection levels of certain product. X from 0-6 defines security level from penetration of solids. Y from 0-9 defines security level from water.

3. Why placing router and antenna in one enclosure is better?

The biggest benefit of router and antenna being next to each other is the reduction of cable used to connect the elements. Reducing the cable length reduces its loss, which has high impact on signal quality.

Porównaj

Antenna QuMini for Teltonika TRB140

P/n: A140I

Integrated small multi-band LTE omni antenna + place to install Teltonika TRB140 (All-in-one)

QuMini omni LTE antenna for Teltonika TRB140 router is a perfect and small outdoor device for mobile and fixed installations like industrial, CCTV, hotspots, yachts, boats, campers, RV etc. If you use TRB140 with QuMini antenna, you get an integrated complete solution with embedded router and multi band antennas in one enclosure.

This antenna is also compatible with TRB141, TRB142, TRB143 and TRB145.