Difference between revisions of "Superhet Receiver Design"
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* Located between First mixer and IF Amplifier | * Located between First mixer and IF Amplifier | ||
* SSB or CW filter | * SSB or CW filter | ||
| − | ** SSB4 | + | ** [[W7ZOI_Filters_on_Kits_and_Parts_Boards#SSB_4_Crystal_Filter_on_Kits_and_Parts_Board|SSB4]] |
| − | * CW5 | + | ** [[W7ZOI_Filters_on_Kits_and_Parts_Boards#CW3_Crystal_Filter_on_Kits_and_Parts_Board|CW3]] |
| + | ** [[W7ZOI_Filters_on_Kits_and_Parts_Boards#CW_5_Crystal_Filter_on_Kits_and_Parts_Board|CW5]] | ||
== VFO/Local and BFO Oscillators == | == VFO/Local and BFO Oscillators == | ||
Revision as of 00:34, 3 October 2021
Contents
Block Diagram
Pre-selector / Bandpass Filter
- Couples antenna to RF Amp and suppresses out of band signals
- RF Band Pass Filters
- Analog Devices Filter Wizard
RF Amp
ADE-1 Mixer
- Kits and Parts Mixers
- 9 MHz Diplexer for IF
Crystal Filters
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
ADE-1 Mixer / Demodulator
- Kits and Parts Mixers
- Replace Diplexer with Low Pass Filter for audio range
