Alpha Delta Coax Switches DELTA-4B/N (NOS) Never used, N- Connector 4 position coax switch. These switches have a low-loss micro-strip cavity design, positive detent switching, master antenna ground function, a front panel removable arc-plug surge protection module, and excellent HF through UHF performance. The unselected antenna ports are grounded for protection and maximum isolation. Note: When placed in the "COM" position, all switch positions are grounded. When a port is selected, that port is ungrounded while all other ports remain grounded. Sells new for about $120.00 Asking $60.00 plus shipping from 44460 CONUS only..