There are 94 circuit schematics available in this category. Click here for all circuit diagrams. The Last circuit was added on Saturday, January 28, 2023.Please note some adblockers will suppress the schematics as well as the advertisement so please disable if the schematic list is empty.

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CircuitCategoryDate AddedOK?Votes 
One transistor FM transmitter / FM bugging deviceTransmitters Status5 vote up vote down
Two transistor FM transmitter / FM bugTransmitters Status1 vote up vote down
Two transistor FM transmitter circuit diagram and PCB layoutTransmittersSep 23, 2024Status-7 vote up vote down
Simple AM transmitter using a BFW10 FETTransmittersDec 07, 2024Status3 vote up vote down
Simple FM transmitter using a single transistorTransmittersMar 23, 2024Status1 vote up vote down
4 Transistor Tracking TransmitterTransmitters Status0 vote up vote down
AM TransmitterTransmitters Status-5 vote up vote down
FM Transmitter using two transistorsTransmitters Status1 vote up vote down
AM/FM Simultaneous Transmitter Using Digital ICTransmitters Status4 vote up vote down
Medium range transmitter using pair of 2N3904 transistorsTransmitters Status2 vote up vote down
15 watt FM transmitter circuit diagramTransmitters Status1 vote up vote down
AM TransmitterTransmitters Status-1 vote up vote down
Single transistor FM transmitterTransmitters Status2 vote up vote down
Small FM transmitter using SMD componentsTransmitters Status0 vote up vote down
Miniature FM TransmitterTransmitters Status0 vote up vote down
Low Power FM TransmitterTransmitters Status0 vote up vote down
FM Voice TransmitterTransmitters Status0 vote up vote down
Sensitive FM TransmitterTransmitters Status2 vote up vote down
Small FM TransmitterTransmitters Status-1 vote up vote down
5W Chinese PLL FM Transmitter With LCD Printed Circuit Board (PCB)Transmitters Status1 vote up vote down
80m ceramic resonator VXO CW transmitterTransmitters Status0 vote up vote down
80 Metre DSB TransmitterTransmitters Status0 vote up vote down
10W 2M CW transmitter circuit diagramTransmittersJun 19, 2024Status-1 vote up vote down
Simple CW transmitter for 80MTransmittersJun 13, 2024Status-1 vote up vote down
EPCOS Principles of SAWR-stabilized oscillators and transmitters application notes (PDF)TransmittersApr 12, 2024Status-2 vote up vote down
88 - 108MHz FM audio transmitter / bug circuit diagramTransmittersApr 12, 2024Status-1 vote up vote down
Automicro TM02 high power data transmitter module circuit diagramTransmittersApr 12, 2024Status1 vote up vote down
SAW-based 434MHz transmitter schematic with RO2101 1-port SAW resonatorTransmittersApr 12, 2024Status-1 vote up vote down
RF Audio transmitter circuit diagram that operates in the AM broadcast bandTransmittersApr 12, 2024Status-1 vote up vote down
FM Microphone micro-transmitter that is small and sensitiveTransmitters Status-1 vote up vote down
A 3m (100 MHz) small bug (ZIP file)TransmittersJan 26, 2025Status0 vote up vote down
BC547 80M SSB QRP TransceiverTransmitters Status0 vote up vote down
FM Microphone transmitter / FM buf circuit diagramTransmittersJan 31, 2025Status0 vote up vote down
433MHz super remote control using a PIC12F683 to boost rangeTransmittersMay 24, 2024Status0 vote up vote down
Remote RF transmitter based on PIC12F675 or PIC12F629TransmittersMay 24, 2024Status-1 vote up vote down
1.5 volt FM transmitter circuit diagramTransmittersJul 03, 2024Status-2 vote up vote down
1300MHz - 1500MHz transmitter with 20 - 50mW output powerTransmittersJul 03, 2024Status0 vote up vote down
Wireless microphone using 741 opamp and 2N3904TransmittersMay 25, 2024Status0 vote up vote down
THE FOX - 40 milliwatt transmitterTransmittersApr 14, 2024Status0 vote up vote down
THE FOX 750 - 750 milliwatt transmitterTransmittersApr 14, 2024Status0 vote up vote down
FOX BOX - Transmitter controllerTransmittersApr 14, 2024Status0 vote up vote down
THE FOX - 250mw transmitter with timerTransmittersApr 14, 2024Status2 vote up vote down
1 Watt AM transmitter for the 10 meter band (28MHz)Transmitters Status1 vote up vote down
12-meterband QRP AM oscillator transmitter using a 2N2219 transistorTransmitters Status-1 vote up vote down
500mW AM transmitter for the 20 meter band (14MHz)Transmitters Status-1 vote up vote down
3 Watt FM Transmitter circuit diagramTransmittersSep 01, 2024Status1 vote up vote down
FM Transmitter with range of about 300 feetTransmittersSep 01, 2024Status0 vote up vote down
Low Power PLL FM Transmitter based on LMX1601 and Atmel ATtiny2313 or AT90S2313 microcontrollerTransmitters Status1 vote up vote down
175KHz inductive pulse transmitter (PDF)TransmittersJan 26, 2025Status0 vote up vote down
7MHz QRP transmitterTransmittersJul 09, 2024Status0 vote up vote down
MW Transmitter can be used as an inter-room radio telephoneTransmitters Status0 vote up vote down
Pocket Transmitter that can cover 20 to 25 meters with a telescopic antennaTransmitters Status1 vote up vote down
4 watt FM transmitter circuit diagramTransmittersFeb 21, 2025Status0 vote up vote down
FM transmitter bugTransmittersFeb 21, 2025Status0 vote up vote down
Small radio transmitterTransmittersFeb 21, 2025Status0 vote up vote down
AM transmitterTransmittersFeb 21, 2025Status0 vote up vote down
2 Transistor FM Voice TransmitterTransmittersFeb 21, 2025Status-1 vote up vote down
15 watt FM transmitter circuit schematicTransmittersFeb 21, 2025Status-1 vote up vote down
Wireless transmitter for PIR using Holtek HT12ETransmitters Status0 vote up vote down
88-108Mhz FM Radio Transmitter with 3 transistor stagesTransmitters Status1 vote up vote down
Simple 430MHz band FM transmitter uses only 2 FETtransistorsTransmitters Status0 vote up vote down
AM transmitter using no power supplyTransmitters Status3 vote up vote down
40 Meter, 5 Watt QRP Transmitter circuit diagramTransmitters Status-1 vote up vote down
Miniature FM transmitter circuit diagramTransmittersJan 26, 2025Status0 vote up vote down
Sensitive FM transmitter circuit diagramTransmittersJan 26, 2025Status0 vote up vote down
Simple RF transmitter circuit diagramTransmittersJan 26, 2025Status0 vote up vote down
1.5 volt tracking transmitter circuit diagramTransmittersJan 26, 2025Status0 vote up vote down
Tracking transmitter circuit diagramTransmittersJan 26, 2025Status2 vote up vote down
30-Meter QRP Transmitter for Morse CodeTransmittersJan 26, 2025Status0 vote up vote down
Miniature FM Transmitter #1TransmittersJan 26, 2025Status-1 vote up vote down
Miniature FM Transmitter #2TransmittersJan 26, 2025Status-1 vote up vote down
Miniature FM Transmitter #3TransmittersJan 26, 2025Status-1 vote up vote down
4-transistor transmitter circuit diagramTransmittersOct 06, 2024Status0 vote up vote down
FM telephone transmitterTransmittersOct 06, 2024Status0 vote up vote down
Miniature tracking transmitterTransmittersOct 06, 2024Status0 vote up vote down
Light sensing RF transmitterTransmittersJan 26, 2025Status0 vote up vote down
1.5V tracking transmitter circuit diagramTransmittersOct 06, 2024Status-1 vote up vote down
Micro-Spy with FETsTransmittersJan 26, 2025Status1 vote up vote down
Micro-Spy with USWTransmittersJan 26, 2025Status0 vote up vote down
Micro-Spy with TTLTransmittersJan 26, 2025Status0 vote up vote down
Wireless microphoneTransmittersOct 06, 2024Status1 vote up vote down
VXO FM BugTransmittersMay 19, 2024Status0 vote up vote down
Micro Power FM Broadcasting CircuitsTransmittersJan 26, 2025Status0 vote up vote down
RF/SS Handie Hopper Transmitter SchematicTransmittersOct 23, 2024Status0 vote up vote down
80 Metre CW beacon / transmitter circuit diagramTransmittersSep 01, 2024Status0 vote up vote down
144.000 Mhz CW TransmitterTransmitters Status-2 vote up vote down
CW transmitter for 80 m and 40 m amateur radio bands based on AD9833 DDSTransmittersJul 13, 2024Status0 vote up vote down
All-Digital Stereo FM Transmitter with RDS based on AD9852 DDS (PDF)TransmittersJul 13, 2024Status1 vote up vote down
FM transmitter based on MC145170 PLL and Mini-circuits POS150TransmittersJul 13, 2024Status0 vote up vote down
5W PLL FM Transmitter with typical output power of 5 W and no-tune designTransmittersJul 13, 2024Status0 vote up vote down
Mini AM transmitter using LM386 and 4 MPF102 FETs for an output stageTransmittersJul 13, 2024Status0 vote up vote down
Standalone Multiband WSPR beacon transmitter (MEPT) - PDF fileTransmittersJul 13, 2024Status0 vote up vote down
Wireless AM MicrophoneTransmittersOct 02, 2024Status0 vote up vote down
0.5W FM Transmitter 88MHz-108MHzTransmittersOct 02, 2024Status-1 vote up vote down