Even though manufacturers of handheld ham radios have been busy ... otherwise communicating between the radio and a computer, very few can use USB for power. Instead , they rely on barrel jacks ...

The change is accelerating as more and more switching power supplies are put into operation. This is a noise source that spells even more trouble for the AM band! Ham radio operators are often the ...

the national association for Amateur Radio. Using only emergency power supplies, ham operators will construct emergency stations in parks, shopping malls, schools and back yards around the country.

Local ham radio operators gathered at a number of ... Using only emergency power supplies, ham operators constructed emergency stations in parks, shopping malls, schools and backyards around ...

Field Day has been an annual event since 1933, and remains the most popular event in amateur radio. Using only emergency power supplies, Ham operators in all 50 states and Canada will construct ...