If you decide to buy an SB-220, be warned that 3-500Zs that sit idle for years can go bad. Do yourself a favor and Google '3-500z gettering'. If you decide to buy either an SB-200 or SB-220, be aware that you will likely require the Harbach soft-key mod to prevent damage to your solid-state transceiver. 73 Mike www.w0btu.com