The Yaesu brand is well known among ham radio aficionados and is synonymous with premium quality ham radios. Yaesu also delivers this quality for airband communications, which is vital in ensuring flight safety and is used to exchange information between a pilot and control tower, a pilot and ground mechanic or between two pilots. Yaesu developed an ultra small 5W output portable transceiver, a technological breakthrough that achieved a miniaturization unlike any other competing product. The product was continuously developed and improved – one of the current results is the FTA-250L.