WFLA-WSUN in Clearwater, Fla., built the country’s first AM broadcast directional antenna in 1932. This coverage map shows how the signal was reduced to the north of the transmitter to protect a ...

The relaxation of the AM antenna efficiency requirements in the AM Improvement ... a station that had lost its original transmitter site to development. The station licensee was unable to find any ...

It is crystal controlled, or can be driven by any external variable frequency oscillator (v.f.o.). Built-in antenna tuner ... to build your own tube-based AM transmitter, you might want to ...

AM modulation isn’t that hard to do ... run and modulate an amplifying stage as the signal goes to the antenna. However, this transmitter is low power and low fidelity, so the simple set up ...

For antenna, one can use a 0.5m long telescopic aerial ... tuning slug L1 = 4 turns of 22 SWG copper wire on 15 mm diam air core We have not tested this am transmitter, so we don’t guarantee the ...

Shane Iverson: It was a big day. We've had our 640 AM transmitter, and antenna and tower that go along with it up for now, it's been serving the region for 50 years. However, it's been sinking ...

Despite evolving automotive trends, both GM trucks are equipped with a 30-inch whip-style antenna, which extends upwards from the fender and serves as the primary receiver for AM/FM radio signals.

The KCUR 89.3 transmitter antenna is located about 850 feet up this 1,100-foot radio tower in eastern Jackson County. KCUR replaced our aging transmitter in December 2021 after a successful ...

A small-town radio station manager had a big surprise when he learned the station’s 200-foot radio tower and transmitter in Jasper ... Since the theft knocked the AM station off the air ...