Ramsey Electronics AF1 User Manual
AF1
• 1
E - Z CW
AUDIO FILTER
Ramsey Electronics Model No. AF1
Here’s a quick and easy way to eliminate interfering CW
signals! This filter uses a digital bandpass filter to knock out
those unwanted signals. The adjustable center frequency and
switchable bandwidth add some versatility to this hard working
kit!
signals! This filter uses a digital bandpass filter to knock out
those unwanted signals. The adjustable center frequency and
switchable bandwidth add some versatility to this hard working
kit!
•
Utilizes “state of the art” switched capacitor bandpass filter IC’s !
•
Four selectable bandwidths - 750 Hz, 500 Hz, 250 Hz, and 100 Hz -
all with digital accuracy.
all with digital accuracy.
•
Adjustable filter center frequency for convenient listening.
•
Overload protected input accepts headphone or speaker level
audio.
audio.
•
“Smart” power input allows for AC or DC operation.
•
Audio bypass when unit is switched off - no need to disconnect
unit when not in use.
unit when not in use.
•
Speaker and headphone level outputs with adjustable volume. No
need for an external audio amp.
need for an external audio amp.