Ameritron ATR-20 Antenna Tuners are versatile, high-power antenna tuners. The ATR-20’s roller inductor “T” matching network continuously tunes all frequencies from 1.8 through 30 MHz. They also feature a built-in 3-kilowatt peak or average directional power meter. ATR-20s have convenient connectors for coaxial and wire feed lines. A heavy duty, high-voltage insulated, current-type balun allows use with balanced feed lines.
Properly tuned, these ATR-20 tuners safely operate on all bands with RF power levels of 1.2 kilowatts SSB and 600 watts CW. They will handle load impedances from 25-800 ohms. Their matching range also extends from one ohm to 2500 ohms (5 ohms to 500 ohms on 160 meters) at slightly reduced power ratings. Peak and average forward power, reflected power, and SWR are displayed on an illuminated cross-needle meter.
An internal six-position antenna selector switch allows selection of three coaxial line outputs, or a single wire-line balanced-line output. Two coaxial line outputs, ANTENNA 1 and 2, are available in either “tuned” (with tuner’s matching network in line) or “direct” (no matching circuit) configurations.
Coaxial output port ANTENNA 3 is available only as a direct (no matching system) configuration. WIRE/BALANCED LINE positions are available only as “tuned” configurations.
From Hans G0UPL: Great excitement here at QRP Labs Towers just half an hour ago, middle of the QCX challenge (from which I am abstaining this month)... Read more
The crew of a sailing vessel that foundered on a reef in the South Pacific in early May was safely rescued, thanks in part to the alert ear of Maritim... Read more
by:Brian Benchoff Every once in a great while, a piece of radio gear catches the attention of a prolific hardware guru and is reverse en... Read more
Description Functional overview of the application DR functions You can use some transceiver’s DR functions. Share pictures Send and receive vo... Read more
The European Space Agency (ESA) reports that the OPS-SAT “flying laboratory” satellite lifted off from Europe’s Spaceport in Kourou, French Guiana, ab... Read more
Solar activity remains at very low levels on Thursday. The lone spotted region (AR 2767) continues to transit the southeast quadrant and its not magne... Read more
Waldo County, Maine, is implementing the nation’s first county-wide emergency AM radio station with the help of radio amateurs. “We realized that the... Read more
By JOHN MARKOFF He may have the right stuff, but he got the wrong digits. Timothy Peake, a former British Army Air Corps officer and current European... Read more
AR5001D 40kHz-3.15GHz Cellular frequencies blocked on USA version; unblocked version available to qualified entities, documentation required. Download... Read more