If there was, not many people would purchase KRX3A sub-receivers. John KK9A FromL Irwin Darack idarack at gmail.com Thu May 11 15:09:18 EDT 2017 I have a K3s without the sub-receiver installed. Is there a way to listen to two different frequencies on the same band without a sub-receiver using a stereo headset ? Thanks. -- Irwin KD3TB