====== Model 208 CW Filter ======

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===== 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 ciruit assembly mounted in a small enclosure, along with a three position selector switch and attached cable.  The 208 plugs directly into the Argonaut Model [[509]] ACCESSORIES socket, whereas a slight modification is necessary when using the filter with the older Model [[505]] Argonaut.  Service Note SN-6-505 details the modifications.


===== Specifications =====
  ***Bandwidth:** 150 Hz @ -3 dB, 1.45 kHz @ -60 dB in CW-1 position; 260 Hz @ -3 dB, 2.8 kHz @ -20 dB in CW-2 position
  ***Shape Factor:** 7.2 to 1 @ 6/60 dB points
  ***Center Frequency:** 750 Hz
  ***Input Impedance:** 220 k
  ***Output Impedance:** Less than 10 ohms
  ***Insertion Gain:** 2.5 dB
  ***Semiconductors:** 2 ICs
  ***Powered by Transceiver** - +12 VDC @ 2 mA


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