RF Deck Built like a tank and plenty of air flow! This is my second 2x3-x00 amplifier. I had a Henry Tempo 2K as well. This L4B is the better amp over all. External power supply keeps that extra heat out of the chassis. Air blowing up through the tube sockets keeps everything cooler so tubes AND sockets will last longer.

The R. L. Drake Model L—4B Linear Amplifier offers continuous 2000 Watts PEP on SSB, and 1000 Watts DC on CW, AM (controlled carrier) and RTTY operation covering the ham bands 80 through 10 meters. All frequencies 3.2 to 30 MHz may be covered with modification of …

The R L DRAKE Model L—4B Linear Amplifier offers continuous 2000 watts PEP— SSB, and 1000 watt DC, C W, AM and RTTY operation covering the ham bands 80 through 10 meters. All frequencies 305 to 30 MHz may be covered with some re- alteration of the input circuit. The L-4B uses two 3—500Z or two 8802/3-500Z or two 8163 or two 3-400Z zero bias

Aug 26, 2024 · The Drake L-4B Amplifier was designed and built in the middle 1960’s as a two-piece unit. This included the (L4B) amplifier section and the (L-4PS) high voltage power supply. The amplifier was a very rugged amplifier and designed as a two final tube amplifier using the 3-500 or similar tube.

View and Download DRAKE L-4B instruction manual online. L-4B amplifier pdf manual download.

The R. L. Drake Model L-4B Linear Amplifier offers continuous 2000 Watts PEP on SSB, and 1000 Watts DC on CW, AM (controlled carrier) and R TTY operation covering the ham bands 80 through 10 meters. All frequencies 3.2 to 30 MHz may be covered with modification Of the input circuit. The 1-—4B uses 2 zero-bias triodes in a Class B

The Drake L-4B has 1000 watts PEP power input on AM, CW and RTTY and 2000 watts input on SSB. It covers 80, 40, 20, 15 and 10 meters (10 meters not available on late production). The high efficiency Class B Grounded Grid Circuit uses the new Eimac 3-500Z zero bias triodes. Power requirements are 115 VAC 50-60 Hz 30 amps or 230 VAC 50-60 Hz 15 amps.

Shown in the pictures below is the original Drake L4-B amplifier and the mating L4PS high voltage power supply which Drake Manufacturing sold between 1965 to around 1979.

Apr 8, 2005 · Here's my Drake L-4B, I love it. I use it primarily on 80, 40 and 20 meter SSB, but it performs well on AM.

Drake L-4 Amplifier Time Owned: more than 12 months. I saw my first Drake L-4 in action in 1969. Based on that first love I bought a new L-4B in 1973. Currently, I have a L-4 and a L-4B. The L-4, #492, has been modified to L-4B spec in most respects except for the vernier tuning. Agree fully with the last review. My switch is, well, like the ...