L-4B Pics
3-500Z tube

L-4B linear ampl.

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L4Bfront.jpg (122415 octets)
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Picture : WA2YWD
1967 - Price : 825 US$

bullet2000 Watts PEP-SSB; 1000 Watts AM, CW, RTTY
bulletClass B Grounded-Grid - two 3-500Z Tubes
bulletBroad Band Tuned-input for low distortion, high efficiency
bulletRF Negative Feedback gives lower distortion
bulletTransmitting AGC for higher audio level without clipping 
bulletDirectional Watt-meter measures forward and reflected power
bulletTwo Taut-band Suspension Meters
bulletPlate Current Meter time constant is consistent with FCC Regulations
bulletSolid state Power Supply is separate
bulletQuiet, low-velocity, high-volume Blower
bulletThe simple uncomplicated circuitry, the rugged tubes and the massive construction assures long, trouble-free life
bulletL-4B: 13 15/16"W, 7 7/8"H, 14 5/16"D. Wt.: 32Ibs.
bulletL-4PS Power Supply: 6 3/4"W, 7 7/8"H, 11"D; Wt.: 43 Ibs.

Drake L-4B Linear Amplifier (R. E.)
(c) QST 12/1969 - page 47 - 2 059 Kb file -
Adobe pdf version

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(c) 1998-2012 D. PRODUCTS SA/NV - DRAKE is a registered trade mark of R.L. DRAVE COMPANY
No copy of text or image without a written authorization : email: JM CHERRY
Last updated on: 24 Dec 2011