Drake - L-4 - Verstärker
Hersteller:
Gerät:
L-4
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The R L DRAKE Model L-4 Linear Amplifier offers continuous
2000 watt PEP-SSB, and 1000 watt D.C. CW, AM and RTTY
operation covering the ham bands 80 through 10 meters. All
frequencies 3.5 to 30 mHz may be covered with some retuning
of the input coils.
The L-4 Linear Amplifier was designed to match the TR-3 and
TR-4 Transceivers and T-4/T-4X Transmitters in appearance
and drive requirements to run the maximum legal input power.
The L-4 uses two 8163 or two 3-400Z zero bias triodes in a
Class B grounded grid circuit configuration that utilizes
R.F„ negative feedback for lowered odd order distortion
products.
A transmitting AGC circuit controls the exciter gain to
allow the highest average power without peak clipping. An
internal changeover relay feeds the antenna through when the
L-4 is turned off. A pair of relay contacts bias the output
tubes to cutoff, eliminating unwanted heat and diode noise
when receiving.
The output tubes are forced-air cooled by a very quiet low
velocity, high volume internal blower. Two taut-band
suspension meters indicate plate current, grid current,
plate voltage, and relative R„F. output power.
The separate solid state power supply requires no warm up
period and provides excellent dynamic and static voltage
regulation.
1 Handbuch
Reparatur und Bedienungsanleitung
Dokumenttyp:
Reparatur und Bedienungsanleitung
Seitenanzahl:
28
Größe:
11,3 MB
Sprache:
Englisch
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Gescanntes Dokument, teilweise schwer oder teilweise nicht zu lesen.
Upload Datum:
9. August 2017
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