Accessories

Ten-Tec Audio CW Filter Model FR-4 #2 This unit is in excellent condition and appears to be working as it should. Description The FR4 filter is for use between receivers or transceivers, and high impedance headphones. It is a passive audio filter...

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...

Ten-Tec Crystal Oscillator Model 241 for the Triton IV 540 & 544 (Extends Band Coverage) It holds 6 optional Crystals for out of band coverage. There is one 5.108 crystal included. This is a rare accessory for the Triton IV. Description For use with...

Ten-Tec Deluxe "Squeeze" Keyer Model KR-40 This Keyer was tested and appears to be working but the paddles appear to need some adjustment.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need...

Ten-Tec Dual Paddle Electronic Keyer Model 645 (needs work) This Keyer was tested and appears to not be working. I am selling it for parts or repair.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it...

Ten-Tec Keyer Paddle Model KR-1 This Keyer was tested and appears to be working.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning of contacts and potentiometers. I am selling...

Ten-Tec Keyer Paddle Model KR-2 This Keyer was tested and appears to be working.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning of contacts and potentiometers. I am selling...

Ten-Tec Keyer Paddle Model KR-5 This Keyer was tested and appears to be working.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning of contacts and potentiometers. I am selling...

Ten-Tec Keyer Paddle Model KR-5A #1 This Keyer was tested and appears to be working.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning of contacts and potentiometers. I am...

Ten-Tec Keyer Paddle Model KR-5A #2 This Keyer was tested and appears to be working.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning of contacts and potentiometers. I am...

Ten-Tec Keyer Paddle Model KR20 This Keyer was tested and appears to be working but the paddles appear to need some adjustment.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning...

Ten-Tec matching AC power supply designed for the Ten-Tec Scout Model 555/556, Argonaut V, & 6N2 New in Original...