To the right is the 6 foot rack with kW amplifiers for 6M (1961, large dials, two large meters), HF (1971, three counter dials, four small meters), and 2M (1995, five square meters).
![[photo: k5am amplifier rack]](rack.jpg "K5AM homebrew amplifiers")
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The homebrew transceiver (the main 40 MHz IF section) sits between
the two laptops. The level with 3.5 inch panels holds,
left to right, the 6 meter transverter, the 2 meter transverter, and
the computer interface. The level with the 7 inch
panels holds, left to right, a 100 watt 6 meter amplifier, a
200 watt 2 meter amplifier, and the 150 watt HF front-end
section of the transceiver. Not shown in this camera shot
is a small 50 MHz amplifier, built while in high-school in 1951, and
still in constant use today. To the right is the 6 foot rack with kW amplifiers for 6M (1961, large dials, two large meters), HF (1971, three counter dials, four small meters), and 2M (1995, five square meters). |
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Mark Mandelkern, K5AM, was first licensed in 1948 as W9ECV in Wisconsin. Mark's main ham operating activity is 6 meter DX, with 138 countries worked. He also enjoys HF DXing and contesting, with DXCC confirmed on 10 bands and a number of top-ten contest awards. Mandelkern is professor of mathematics emeritus at New Mexico State University. |