Function:

provide audio bandpass shaping or filtering, as appropriate for CW or SSB

Input/Output:

• POWER: 9-15 VDC, 5.5 x 2.5mm power jack
• AF IN: Zin = 2K, RCA Jack
• AF OUT: Zout < 200 ohms, RCA Jack
• SAMP OUT: Zout < 200 ohms, RCA Jack (2nd buffered output for external AGC generator)

Operator Controls:

• CW/SSB switch
• others as required

Key Specs or Limitations:

• For SSB: LPF with Fc=2.5-3KHz or BPF = 300-3000 Hz
  For SSB, midband (1 KHz) gain = 0 dB (i.e., x1)
• For CW: BPF with Fo = 750-800 (fixed, or include that freq if filter is variable)
  For CW, Bandwidth (3 dB) 400-500 Hz (fixed)
  For CW, Gain at Fo = 4-6 db
• Output : AC- coupled

Misc Notes: