Hi Have anyone tried a Rotary VFO on the dsp10, mouse wheel, griffin device etc..... My dsp10 is running 24/7 almost since construction date. 2001? de SM2GCR. /Lars Sweden Phone: +46 (0)70-5721987. +46 (0)73-8373236. Email: larzs.sjoberg at gmail.com or larzs.sjoberg at icloud.com sm2gcr at gmail.com