I have a router with SIM cards that allow it to receive a cellular signal and I wanted to improve the signal strength of the antennas that came with it, so I gave these a try. When the router was in a certain position, it received -77 dBi and three bars of signal strength. Not bad. Without moving the router I just swapped the antennas on these devices and now it's -72dbi and four bands. For the price, that's a good improvement.
π‘ MikroTik LHG 5: High-Gain Dual Polarization Grid Antenna, Enhanced 5 GHz Performance (US Version)
9 Review
πΆ Proxicast Ultra Low Profile MIMO 3G / 4G / LTE Omni-Directional Screw-Mount Antenna for Verizon, AT&T, Sprint (and Others) Modems & Routers with SMA External Antenna Ports
9 Review
Gadgets World FBA_ALFA ARSN19M OMNI Directional High Gain
9 Review
Bingfu Dual Band WiFi Antenna (2-Pack) for Ultimate Wireless Performance
11 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
π HOYOKI 9 in 1 USB C Hub Adapter: Ethernet 1000Mbps, 4K HDMI, 3 USB 3.0 Ports, 5Gbps USB-C Data, 100W PD Thunderbolt 3, SD/TF Slots for MacBook, Dell XPS and More Type C Devices
6 Review
iVANKY MacBook Pro Docking Station, 9-in-2 USB C Hub Adapter with 4K Triple Display, 100W PD3.0, Ethernet, 2 HDMI, USB-C 3.0, 2 USB-A 3.0, SD & TF for MacBook Pro/Air
9 Review
π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review