Based on Gary's skills in telecommunications, wireless, and RF engineering, I estimate his hourly rate to be around $100. This is a relatively low estimate considering the demand for these skills in the industry. However, Gary's limited working proficiency in German may impact his earning potential. Additionally, his location in Riverside, California, may also affect his rate. To give a better idea, here are some salary benchmarks: according to the Bureau of Labor Statistics, the median annual salary for telecommunications equipment installers and repairers in the United States is around $62,000. However, experienced professionals with advanced skills can earn upwards of $100,000 per year. Given Gary's skills and experience, I believe he could charge around $100 per hour, but this is a conservative estimate.