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Three Vacuum Tube Regenerative Radio Receiver
Parts List:
C1 150pF Tuning Capacitor
C2 100pF Capacitor
C3 50pF Trimmer Capacitor
C4 0.001 uF Capacitor 250 wvdc
C5 0.001 uF Capacitor 250 wvdc
C6 16 uF Electrolytic Capacitor 250 wvdc
C7 0.01 250 wvdc Capacitor
C8 10 uF 25 vwdc Electrolytic Capacitor
C9 0.01 uF capacitor 250 wvdc
C10 10 uF 25 vwdc Electrolytic Capacitor
C11 0.01 uF capacitor 250 wvdc
R1 1Meg 1/2 w 5% resistor
R2 220k
R3 68k
R4 10k potentiometer
R5 10k
R6 500k audio potentiometer
R7 100k
R8 2.2k
R9 1meg
R10 47k
R11 4.7k
L1 See text
L2 See Text
L3 2.5mH (RF choke)
L4 4H 15mA
Z1 2k phones
VT1a pentode section 6aw8
VT1b triode section 6aw8
VT2 6c4
Coils:
The Coils really depend on your coil form. A coil form of 1 inches requires:
L1 of about 35 turns
L2 of 9 turns
L2 should be 1/4 inch above L1.
Use 28 gauge magnet wire for coils.
ALL COILS MUST BE WOUND IN THE SAME DIRECTION!!!!!!!!!!!!
This receiver can be used on the Short wave bands using a simple crystal down converter.
I will put a simple down converter on my website later on.
Making a High Voltage Power Supply
