Audio Filters (AF)

6 products
  • Simple AF Amplifier
    $3.00
    $3.00
    Sold out
  • The Active Low-Pass Audio Filter for Receiver (SSB 2.4 KHz or CW 1 KHz)
    $6.50
    $6.50
    Sold out
  • The Active CW low-pass filter
    $5.00
    $5.00
    Sold out
  • Simple AF Speech Processor
    $13.00
    $13.00
    Sold out
  • CW / NOTCH Filter for HF transceiver
    $10.00
    $10.00
    Sold out
  • 5 band Audio Equalizer
    $14.00
    $14.00
    Sold out