Border Security Force (BSF) recruit personnel in Head Constable (Radio Operator) and Assistant Sub Inspector (Radio Mechanic). Candidates to gain eligibility to apply for HC (RO), ASI (RM) posts must satisfy the following eligibility criteria… 1. Nationality: Candidates must be a Indian citizen. 2. Age Limit: For HC (RO) posts, candidates’ age limit should between 18 to 23 years andmore..