The BARGAIN basement part 3

[Verkehrsrot]

You may also be interested in the RF-in / RF-out 2 socket version.
Guess you can meter the performance of antenna in-circuit with this tool?

https://de.aliexpress.com/item/New-Arrival-Best-quality-N1201SA-UV-RF-GSM-Antenna-Analyzer-Frequency-Test-range-140mhz-2700mhz-resistance/32759915213.html