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Model 208 CW Filter

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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