Scanner app is used, really featuring the loading of preconfigured frequencies on a text file.
Here is a link to my Amazon Store.
https://www.amazon.com/shop/pentest
Here is my affiliate link for the antenna that is used on the H4M.
Antenna I use = https://amzn.to/49FRCxX
Antenna Adapters I use = https://amzn.to/3DjHn6z