Audio Filters (AF)

6 products
  • The Active Low-Pass Audio Filter for Receiver (SSB 2.4 KHz or CW 1 KHz)
    $18.00
    $18.00
    Sold out
  • Simple AF Amplifier
    $11.00
    $11.00
    Sold out
  • CW / NOTCH Filter for HF transceiver
    $16.00
    $16.00
    Sold out
  • 5 band Audio Equalizer
    $25.00
    $25.00
    Sold out
  • The Active CW low-pass filter
    $16.00
    $16.00
    Sold out
  • Simple AF Speech Processor
    $20.00
    $20.00
    Sold out