Add to Cart Quick view Collins R-390 & R-390A Amperite TJ311M01 Ballast Regulator New in Box Amperite MSRP: Now: $34.99 Was: This Amperite TJ311M01 Ballast Regulator, is used in the Collins R-390 & R-390A Receivers. It is New in the Box. This item is very hard to find! MSRP: Now: $34.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $34.99 Was: Subtotal: Add to Cart