An investigation of the desensitizing effects by high power HF broadcast transmitters on HF airborne receivers

The actual increase in power and number of high-frequency (HF) broadcasting transmitters (Tx) may strongly interfere with collocated (and even remote) radio receivers (Rx) over broad frequency ranges. The most vulnerable to harmful desensitization interference effects are airborne HF Rx flying in the proximity to the HF broadcasting Tx. In these cases extensive analysis and computational developments are essential to assess the feasibility of reliable operation of HF radio communication links. A general semi-empirical computational method is developed for quantifying the dominant mutual interference desensitization effects on a victim Rx followed by the investigation of a specific modern HF Rx used for communication with aircraft. Realistic worst-case scenarios of the airborne HF victim Rx are developed