We have mentioned earlier that the choice of proper antenna for communication is the decisive factor in establishing contact. No antenna is inherently good or bad. Each one has its own merits. The ham radio station operator has to decide on what suits their own situation. Some antennas with v...
Alexander Kalish 正在 Kickstarter 上為 Build your own solid state high power RF amplifier 籌款! I have written a book on how to build solid state ham radio amplifiers. The book contains eight projects and six amplifiers designs.
ham radio use; SSB LP transmitter for 10-meter ham radio use; 2-meter VHF FM ham radio transmitter; FM video link for 900 MHz NTSC/PAL operation; 2-watt TV transmitters for 440, 900 and 1300 MHz amateur TV NTSC/PAL transmissions; linear amplifier for 440MHz, 10-15watt NTSC/PAL ...
Someone will look really suspicious weaving through a group of people with that copper loop trying to get it within 9 inches of your RFID tag. And if you crank up the amplifier current to 4A, you can increase the range to a whopping 15 inches!!! That’s an awful lot of current to b...
This is actually a very simple build––something even a beginner can do, as long as they’re okay with using a soldering iron. Itdoestake patience preparing the loop cable properly. Take your time as you start, and you’ll be on the air in an hour or two. ...
(the computer can’t read the output of the counter, but since it is controlling the counter, it can perform it’s own internal count and use that). When ERR changes state, the current count is recorded again. Next, the voltage corresponding to each of the two counts is computed (...
If you are using a tube type amplifier, depending on the wattage it has been tuned to, can and will give you one powerful bite,!, and it will hurt badly. 8 Make your antenna by the tried and true formulas. Dipole antennas often are the easiest to build, and then turned into ...
HamSphere 4.0 also requires a good antenna system for effective long distance communication. The ability to reach out to distant parts of the world and conduct QSOs depends primarily on the antenna. Contrary to popular belief, using high power and a big linear amplifier is not the solution. ...