Add to Cart Quick view Ten-Tec Crystal Calibrator Model 206 for the Argonaut 509 New in Original Box Ten-Tec MSRP: Now: $79.99 Was: Ten-Tec Crystal Calibrator Model 206 for the Argonaut 509. Description 100 kHz pulsed output Requires 9 - 12 VDC at 8 mA Adjustable to WWV with internal variable capacitor Connects in series with receiver antenna... MSRP: Now: $79.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $79.99 Was: Subtotal: Add to Cart