Regenerative Receiver “BARABASHKA- 3”
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ANTENTOP-01- 2013 # 017 Regenerative Receiver BARABASHKA-3 Rinat Shayhutdinov, Miass Credi t Lin e: CQQRP- 36, pp.: 22- 24. This simple regenerative receiver works well using a small wire antenna in length 2… 3 meters. The receiver is easy to tune up and doe s not contain hard - to find parts. At the design two amateurs bands are i ncluded- 40 and 20- meters. Howev er it is possible to retune the receiver to any ot her bands. Figure 1 shows schematic of the receiver. Aperiodic RF- Amplifier made on VT1. VT 2 and VT3 consi st the heart of the receiver- the regenera tive detector. First stage of the Audio Amplifier made on VT4. VT1, VT2, VT3 and VT4 would be any small power HF transistors. Gain should be not less the 100. Working freque ncy should be no t less 100- MHz (off course, above the VT4). DA1 is voltage stabilizer that provides 5- V for regen erative s tage. Final audio stage made on DD1. CD4001A is the full analog of the Russian chip. Figure 1 Schemat ic of the Reg enerati ve Receiver “BARABASHKA- 3” www.antentop.org Page- 83
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ANTENTOP- 01- 2013 # 017 Regenerative Receiver BARABASHKA-3
Rinat Shayhutdinov, Miass
Credit Line: CQQRP- 36, pp.: 22- 24.
This simple regenerative receiver works well using asmall wire antenna in length 2… 3 meters. The receiver iseasy to tune up and does not contain hard- to find parts. At the design two amateurs bands are included- 40 and20- meters. However it is possible to retune the receiver to any other bands. Figure 1 shows schematic of thereceiver.
Aperiodic RF- Amplifier made on VT1. VT2 and VT3consist the heart of the receiver- the regenerativedetector. First stage of the Audio Amplifier made onVT4. VT1, VT2, VT3 and VT4 would be any small power HF transistors. Gain should be not less the 100. Workingfrequency should be not less 100- MHz (off course,above the VT4). DA1 is voltage stabilizer that provides5- V for regenerative stage. Final audio stage made on
DD1. CD4001A is the full analog of the Russian chip.
Figure 1 Schematic of the Regenerative Receiver “BARABASHKA- 3”
www.antentop.org Page- 83
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ANTENTOP- 01- 2013 # 017 Regenerative Receiver BARABASHKA-3
The receiver consumes near 10- milliampere. InductorsL1 and L2 are coiled by an enamel wire in diameter 0.2…0.25- mm (30…32- AWG) on the plastic form (it was useda surplus form from an old receiver) in 5- mm diameter.The inductor is trimmed by a small ferrite rod to neededband. It is possible to use the inductor without a trimmingrod. Trimmer capacitors C4 and C7 are used to changethe border of the bands. Inductor L1 has 9 turns. Inductor L2 has 14 turns.
The regenerative receiver made on one sided PCB plateby sizes 120 x 50- mm. Figure 2 shows the PCB of thereceiver. It is view on the printed lay. Figure 3 shows theview on the PCB at the “mirror view” (view from the sideof the parts). Figure 4 shows PCB with installed parts onit. Figure 5 shows the picture of the RegenerativeReceiver.
Figure 2 PCB of the Regenerative Receiver Figure 3 PCB of the Regenerative Receiver in the
“Mirror View”
Figure 4 PCB of the Regenerative Receiver with Installed Parts on It
Figure 5 Picture of the Regenerative Receiver
If you are interested to get a kit for the receiver (the kit may include the PCB, all parts + coiled inductors,variable capacitor, headphones), please, contact directlyto Rinat via his mail: radiorinat at mail.ru.
www.antentop.org Page- 84
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