Complex sentence: While this approach worked, it was not optimal, because it used a 25 kHz FM channel to transmit at 1,200 baud; when using a direct FSK modulation like G3RUH's packet radio modem, a 9,600 baud transmission is easily made in the same channel.
Split into simpler sentences: While this approach worked, it was not optimal, because it used a 25 kHz FM channel to transmit at 1,200 baud. When using a direct FSK modulation like G3RUH's packet radio modem, a 9,600 baud transmission is easily made in the same channel.