Ten-Tec QTC Kit. For Triton TN-1-545/546 Small kit to change or add FSK(RTTY) to Models 545 and 546. New in plastic wrapper with Instruction Sheet. $10.00 Ten-Tec Century Model 670 Keyer. Some scratches. Fair Condition. I am unable to test it. $40 Ten-Tec Microphone made by Electro Voice. Fair Condition $30 Plus Shipping Bill Marx W2CQ