Purchase of PORT LF Push Off Release Transponders - SOLE SOURCE

The purchase of five (5) PORT LF Push Off Release Transponders (low frequency), twenty (20) PORT LF Spares Kits, three (3) PORT LF Tandem Assembly, ten (10) PORT Tandem Chains, cold galv steel, 1.5 ft, and twenty (20) Alkaline Welded Battery Packs for model PORT LF.