Simple Receiver

Receiver Type: Superhet with a three crystal IF filter Receiver sensitivity: Better than -120 dBm
Current Drain: ~ 17 mA at 12v.
- Bus switch first mixer improves handling of high level signal (40m SWBC!)
- AGC - Automatically reduces large signals
- 3 pole Crystal filter
  - Single sided receiver reception
  - Wider 500 Hz filter decreases "ringing" and listener fatigue
- Audio gain chain incorporates active R/C low pass filter
  - Reduces unwanted high frequency audio gain stage hiss
  - Provides >30 dB additional attenuation for signals more than 2KHz away
- Headphone level output with diode limiting - o Protects your ears from static crashes or sudden strong stations
- Band coverage provided in two ranges
  - Each tuning range ~ 20 KHz wide
  - On board switch selects upper or lower band segments
    - 40m covers 7.000 to 7.022 and 7.024 to 7.049 MHz (DX and QRP segments)
    - 30m covers 10.100 to 10.120 MHz
- External "mute" input (active low)
  - Reduces receiver gain by ~ 70 dB
  - Receiver input protected to 5w when muted (only when muted!)