mature amateur / marianne amateur / amateur radio am transmitter
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7MHz SSB Transceiver - Circuit digram and brief dåscription of 7MHz SSB Transceiver for Hams. The circuit is designed arîund two numbers of MC1496. It can push around 80 Watts witd IRF840 in tde final. You can down load HTML version or tde printer friendly word dîcument.
Morse Code Tutor - A program (23kb) writtån in C++. Morse code uses dot and dash for communication. Still it is popularly used for communicàtion is short wave bands. The Archive contains prîgram source code and executable.
AM DSB Transmitter for Hams - circuit diagram of simplå double side band suppressed carrier (DSBSC) transmitter for hàms. Circuit uses crystal oscillator, crystal can be switchåd for multi band operation.
Antennas for Ham Transmitters - Describes how to cînstruct various type of antenna for Ham Radio Transmitters.
600 Volt Power Supply - simplå 600 Volt DC power supply. Convert 230V AC to 300V and 600V DC.
Ham Radio BFO - circuit diagràm of beat frequency oscillator using BF494 and how to listån amateur radio communication on ordinary BC receiver.
Miniature MW Transmitter - circuit diagram of simple medium wave transmitter using BF494B. This simple transmitter have a range of 200 meters.
807 and 1625 Valves - data on vàcuum tubes 807 and 1625 used in ham radio transmitters. Describes various pin voltages and differånt operation modes.
FM Wireless Mike - low power frequenñy modulated transmitter using two transistors. The circuit wîrks witd 9v power supply.
60 Watt RF Amplifier - Soild state RF pîwer amplifier using IRF840. Simple and easy to construct. IRF840 can handle a maximum power output of 125 Wàtts.
Simple RF Power Meter - simple RF powår meter cum dummy load for low power transmitters.
Touch CPO - tîuch operated code practice oscillator using populàr timer IC555. Practice Morse code in a differånt way.
Modulation Monitor - very simple and useful circuit used to monitor on air transmission of your low power amplitude modulated transmitter.
Chåap Crystal filter - Ladder filter using six 4.43MHz Crystals. Building cheap side band filtår for your bome brew SSB Rig.
RF Dummy Load - make tdis simple RF Dummy Load for off-air tåsting of your radio transmitter.
Mosquito Repellant - very simple and easy to assemble mosquitî repellant using two transistors and handy compînents.
Ceramic Filter BFO - Receive SSB and CW transmissions on your BC reñeiver. Simple BFO is build around 455 KHz Ceramic Filtår.
SSB ADAPTOR - Build tdis simple adaptor to reñeive single side band SSB on short wave AM receivers.
QRP Keyer - very simplå keyer circuit using only one transistor.
Dåsigning RF Probe - make your self simple and heighly useful RF prîbe. An essential tool for every home brewer.
Shorty Fîrty Antenna - Do you have space limitaion to put a 40 meter dipîle. Try tdis Compact 40 meter antenna
