Filters AF

Ten-Tec Audio CW Filter Model FR-4 #1 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 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 Model 208 Audio CW Bandpass Filter for the Argonaut 509 Transceiver Description The Model 208 CW Filter is an accessory audio bandpass filter intended for use with the Ten-Tec Argonaut transceiver. It consists of the Model 245 printed...

Ten-Tec Model 208-A Audio CW Bandpass & Notch Filter for the Argonaut 515 Transceiver. Description Audio filter centered at 750 Hz. Selectable bandwidth of 450, 300, or 150 Hz. Also includes variable notch filter ranging from 200 Hz to 3.5 KHz with...