Frequency Scanner Log Functionality

[barl0g]

Feature description
This request is to add a logging function to the existing scanner module in the Android and Linux versions of SDR++. The goal is to allow users to save or display a real-time list of detected frequencies as they are found.

Motivation

The SDR++ application is a powerful tool for frequency scanning, but it currently lacks the ability to record or display a history of the frequencies it finds. Users need a way to review and analyze the results of a scan without having to manually monitor the application during the process. This feature would significantly enhance the utility of the scanner module, making it more practical for tasks like spectrum monitoring and signal analysis.

Proposed Functionality

1. Real-Time Log File Creation: The scanner module should have an option to save a log file as the scan is running. The file should be in a common format (e.g., .txt, .csv) and contain the following information for each detected frequency:

   Frequency (in Hz, kHz, or MHz)
   
   Signal strength (dBm or similar)
   
   Timestamp of detection
   
   Geographic coordinates (latitude and longitude)
   

2. In-App Real-Time Display: The application's interface should show a real-time list of unique detected frequencies as they are being found. This list should be displayed directly in the Frequency Manager block.

[mix-7]

I support this request.
It would be very convenient!