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The McIntosh MC-2300 is a solid-state power amplifier which was built by the American high-end audio company McIntosh Laboratory between 1971 and 1980. [1] Jerry Garcia in 1987 with an MC-2300 in the lower-right corner of the picture. McIntosh produced the MC-2105 (with blue meters) and the MC-2100 (without) between 1969 and 1977.
A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter , their output driving the antenna .
For example, a transmitter driving the input with 100 watts will be amplified to 2,000 watts (2 kW) output to the antenna. Solid state linear amplifiers are more common in the 1000-watt range and can be driven by as little as 5 watts. [3]
YBA 200-2 – A 200 watt bass head utilizing a quad of KT88's, 2 x 12AX7s and a 12AU7. YBA 300 - A 300 watt bass head utilizing 12 X 6L6GC's, 2 x 12AX7s and a 12AU7. DynaBass 400H – A 400 watt hybrid bass head with a solid state power amplifier, and selectable solid state or tube preamp with a 12AX7 tube.
Thus while solid state high power short wave transmitters are technically possible, economic considerations still favor valves above 3 MHz and 10,000 watts. Radio amateurs also use valve amplifiers in the 500–1500 watt range mainly for economic reasons.
HH Electronics is a British amplifier manufacturer that was founded in 1968 by Mike Harrison, Malcolm Green and Graham Lowes in Harston near Cambridge, England, where its first solid state TPA and MA range of studio quality amplifiers were designed and manufactured. These amplifiers were used by many recording and broadcasting studios ...
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 ...
It could generate 200 W of power at a wavelength of 40 centimeters (750 MHz) with 50% efficiency. The klystron was the first significantly powerful source of radio waves in the microwave range; before its invention the only sources were the Barkhausen–Kurz tube and split-anode magnetron , which were limited to very low power.
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