Drake L4B Vintage 3-500Z Tube Ham Radio Amplifier + Manual (please read) SN 6115
This is a nice amplifier. It has some scratches on the cabinet but looks good overall, particularly the faceplate with really looks great.Also included in the sale is a reproduction of the manual. With a line voltage of 230VAC, the plate voltage sat at 1850VDC in CW position. With 45 watts keyed-down on 40 meters we measured 500 watts out, which is about right as the manual calls for 1000W PEP and we can assume 50-60% efficiency.
The tubes are getting extremely hot (orange in color) when we put the amp into high-voltage position. The L-4B was originally designed to only work with Drake equipment. This one has since been modified to work with other transceivers, and we used an IC-706MKIIG when testing rather than Drake equipment. Perhaps this won't happen when using Drake gear? Bias current may need to be adjusted.
There may be something else going on that we aren't aware of. This item will be packaged using our InstaPak foam-in-bag system, ensuring the utmost protection! Bags filled with a chemical mixture expand around your item and harden to form a protective, yet forgiving, foam barrier. IMPORTANT: You will only receive what is photographed.If it is not shown in the photos, it is not included in the sale. This includes items such as original packaging, accessories, manuals, and so on. Speaking of manuals, it is strongly recommended that you thoroughly read it before attempting to operate the equipment. If a manual is not included in this sale, you should download one. We're here to help! The item "Drake L4B Vintage 3-500Z Tube Ham Radio Amplifier + Manual (please read) SN 6115" is in sale since Wednesday, February 12, 2020.
This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "hamandhifi" and is located in Sparks, Nevada.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Bermuda, Luxembourg, Paraguay, Reunion, Uruguay.
- UPC: DoesNotApply
- MPN: L-4B
- Brand: Drake