fyi, I placed an interesting document on the Nostalgic Kit Central website. It is Modification Kit SBM-102-1 and covers a modification applicable to the HW-100, SB-100, SB-101 & certain SB-102's. The mod permits the driver preselector to peak at the same setting for both transmit and receive. 73 Ken kb7rgg http://www.qsl.net/kb7rgg/