Building Ham Radio Station

 

 




 
 
 
 
Building Ham Radio Station

Building Ham Radio Station

After getting licence you need to setup your Ham Radio Station. A Ham Radio station consists of a receiver and a transmitter. Ordinary broadcast receiver can be used to receive Ham Radio communication. You can use broadcast receiver along with a transmitter or a Transceiver (Receiver and Transmitter on single box, with same tuning).

You have several options to setup a Ham Radio station. If you are good in or interested in assembling electronics circuits, you can assemble ham radio rig your self or get it assembled by some one. You can check with the junk market, if you are lucky you can get transceiver in good condition at very low cost. If you have enough money and want to operate sophisticated rig, can import a commercial rig.

In India most of the hams use assembled ( Home Brewed ) rigs. I am using a home brewed SSB Transceiver for 40 meter band. I am having the circuit and a brief description in HTML format. See the Ham Radio Circuit section for Down loading circuit diagram of 7 MHz SSB Transceiver and lot more useful circuits for Hams.

Assembling an AM Transceiver will cost nearly Rs: 1000/-. If you are good in Home Brewing you can go for a SSB Transceiver which costs nearly Rs: 2000/-. If you are lucky you can get transceivers in working condition from Junk market.

If you can't setup Ham Radio station yourself, there are Hams who can assemble the rig for you. They charge nearly Rs: 2500/- for AM Transceiver ( Receiver and Transmitter on single box. Transmitter using IRF830 in final and BD139 drive. Approximate RF power output 30 Watts.)

 

Ham Radio

7 MHz SSB Transceiver

 

Ladder Filter used in 7MHz SSB Ham Radio Transceiver
Linear Amplifier used in 7MHz SSB Ham Radio Transceiver using 2N2222A, SL100B and BD139

Hobby Circuits - Ham ( Amature ) Radio

 

7MHz SSB Transceiver - Circuit digram and brief description of 7MHz SSB Transceiver for Hams. The circuit is designed around two numbers of MC1496. It can push around 80 Watts with IRF840 in the final. You can down load HTML version or the printer friendly word document.
Morse Code Tutor - A program (23kb) written in C++. Morse code uses dot and dash for communication. Still it is popularly used for communication is short wave bands. The Archive contains program source code and executable.
AM DSB Transmitter for Hams - circuit diagram of simple double side band suppressed carrier (DSBSC) transmitter for hams. Circuit uses crystal oscillator, crystal can be switched for multi band operation.
Antennas for Ham Transmitters - Describes how to construct various type of antenna for Ham Radio Transmitters.
600 Volt Power Supply - simple 600 Volt DC power supply. Convert 230V AC to 300V and 600V DC.
Ham Radio BFO - circuit diagram of beat frequency oscillator using BF494 and how to listen 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 vacuum tubes 807 and 1625 used in ham radio transmitters. Describes various pin voltages and different operation modes.
FM Wireless Mike - low power frequency modulated transmitter using two transistors. The circuit works with 9v power supply.
60 Watt RF Amplifier - Soild state RF power amplifier using IRF840. Simple and easy to construct. IRF840 can handle a maximum power output of 125 Watts.
Simple RF Power Meter - simple RF power meter cum dummy load for low power transmitters.
Touch CPO - touch operated code practice oscillator using popular timer IC555. Practice Morse code in a different way.
Modulation Monitor - very simple and useful circuit used to monitor on air transmission of your low power amplitude modulated transmitter.
Cheap Crystal filter - Ladder filter using six 4.43MHz Crystals. Building cheap side band filter for your bome brew SSB Rig.
RF Dummy Load - make this simple RF Dummy Load for off-air testing of your radio transmitter.
Mosquito Repellant - very simple and easy to assemble mosquito repellant using two transistors and handy components.
Ceramic Filter BFO - Receive SSB and CW transmissions on your BC receiver. Simple BFO is build around 455 KHz Ceramic Filter.
SSB ADAPTOR - Build this simple adaptor to receive single side band SSB on short wave AM receivers.
QRP Keyer - very simple keyer circuit using only one transistor.
Designing RF Probe - make your self simple and heighly useful RF probe. An essential tool for every home brewer.
Shorty Forty Antenna - Do you have space limitaion to put a 40 meter dipole. Try this Compact 40 meter antenna.