Hi Jimmy, I'm interested in your 10 MHz buffer amp. Tried to download "BufferSchematic.doc" but got an error File not found... Could I trouble you to send it to me as an attachment, or I can just go back to your page when the link is re-established. TNX! I'm running my 10544A/DSP-10 just like you. 73, Mike, N1JEZ FN34im "A closed mouth gathers no feet."