The Panasonic CQ-TX5500D Vacuum Tube CD Receiver is apparently the world’s first receiver with a vacuum tube built in and conveniently displayed so that you can see that sucker glow. Just don’t touch ...
One of the more popular trends in the ham radio community right now is operating away from the shack. Parks on the Air (POTA) is an excellent way to take a mobile radio off-grid and operate in the ...
A direct-conversion radio receiver required an audiogain of 450 from a pentode vacuum tube. A pentodehas a high transconductance—that is, the ratio of thechange in plate current to the change of the ...
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