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EICO is also known for "monoblock" amplifiers such as the HF-50 and HF-35, stereo integrated amplifiers such as the ST-40 and ST-70, as well as many other amplifiers and preamplifiers. In the late 1960s, EICO introduced a line of solid state electronics audio equipment referred to as Cortina , but by the mid-1970s the only audio products they ...
The company is known for the Elecraft K3 high-performance HF transceiver, a 32-bit DSP based radio covering HF plus the 6-meter VHF band and the 160-meter MF band, introduced in 2008. The K3 was well-received by the amateur radio community. [3] At the time of its introduction, the K3 ranked highest in Sherwood Engineering's receiver tests. [4] [5]
Kits brought the convenience of all parts being supplied together, with the assurance of a predictable finished product; many Heathkit model numbers became well known in the ham radio community. The HW-101 HF transceiver became so ubiquitous that even today the "Hot Water One-Oh-One" can be found in use, or purchased as used equipment at ...
Vintage amateur radio is a subset of amateur radio hobby where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, such as those using vacuum tube technology.
Lafayette's main competitors were Radio Shack, Allied Radio, Heathkit, and "mom and pop" (independent) radio dealers throughout the United States. Early Lafayette Radio stores were located in Jamaica, N.Y. and Manhattan in the mid-1950s. The electronics kits were produced in the Jamaica facility. [1]
The receiver is filtered by a 22 pole crystal filter with switchable extra 8 and 6 pole narrow band CW filters, a 14 pole SSB filter and a separate 14 pole CW filter. The RF circuit is based on a – manually or automatically – microprocessor controlled PIN diode attenuator with 2 bipolar power transistors used as a high level RF amplifier in the receive mode and as a double RF output pre ...
Solid state linear amplifiers are more common in the 1000-watt range and can be driven by as little as 5 watts. [3] Modern power devices using LDMOS technology allow for more efficient, cost-effective linear RF power amplifiers for the amateur radio community. [4]
Homebrew is an amateur radio slang term for home-built, noncommercial radio equipment. [1] Design and construction of equipment from first principles is valued by amateur radio hobbyists, known as "hams", for educational value, and to allow experimentation and development of techniques or levels of performance not readily available as commercial products.
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