Difference between revisions of "Superhet Receiver Design"
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* [[Kits and Parts Mixers]] | * [[Kits and Parts Mixers]] | ||
** 9 MHz Diplexer for IF | ** 9 MHz Diplexer for IF | ||
| + | |||
| + | == Crystal Filters == | ||
| + | |||
| + | * Located between First mixer and IF Amplifier | ||
| + | * SSB or CW filter | ||
| + | ** SSB4 | ||
| + | * CW5 | ||
== VFO/Local and BFO Oscillators == | == VFO/Local and BFO Oscillators == | ||
Revision as of 13:50, 27 September 2021
Contents
Block Diagram
RF Amp
Mixer
- Kits and Parts Mixers
- 9 MHz Diplexer for IF
Crystal Filters
- Located between First mixer and IF Amplifier
- SSB or CW filter
- SSB4
- CW5
VFO/Local and BFO Oscillators
- VFO-003
- Si5351A based
- Arduino Pro Mini
- OLED Display
- Detachable for remote mounting
- Controlled by Rotary Encoder
- Temperature Controlled Crystal Oscillator
- Triple output (uses 2 of the 3 outputs)
- VFO for received frequency plus 9 MHZ
= IF Amplifier
= Demodulator
- Kits and Parts Mixers
- Replace Diplexer with Low Pass Filter for audio range
