![\"IMG_2113\"](\"http:\/\/dc2wk.schwab-intra.net\/wp-content\/uploads\/2015\/01\/IMG_2113.jpg\")
\n<\/a>I got the tube from cheap eBay. Nobody liked to buy this tube because the cooler was a little bit deformed. I repaired the cooler and clean the tube. Under the dirt was a brand new tube \ud83d\ude42<\/p>\n
The Output (PEP) of this linear with only 85W(10m) 100W(80m) input from my IC-746:<\/p>\n 80m 1600W Here you can download the schematics\u00a0for the RF Part:\u00a0HF_Teil<\/a><\/p>\n Here you can download the schematics\u00a0for the power supply (Diodes):\u00a0Netzteil_Dioden<\/a><\/p>\n Here you can download the schematics\u00a0for the power supply (capacitors):\u00a0Netzteil_Plan<\/a>
\n<\/a>I collect the parts for this linear over one year on flee-markets.<\/p>\n
\n<\/a>The case will be a 19 inch 6 inch high server case. I will modify it.<\/p>\n
\n<\/a>I take all the stuff out and i made some new sheets for the holes.<\/p>\n
\n<\/a>The front is a 2 mm thick aluminium sheet.<\/p>\n
\n<\/a>I made a double bottom sheet, so the cables can be under the bottom. I start with the tube socket. A fried of me, DF2PY, made me this socket. I coat it with silver.<\/p>\n
\n<\/a>That was the first time I tried the tube in the socket.<\/p>\n
\n<\/a>The finish socket with the input circuit from under side.<\/p>\n
\n<\/a>From upper side it looks like this. The air can flow trough the socket.<\/p>\n
\n<\/a>Over the tube comes a chimney.<\/p>\n
\nUnder the socket is the air flow sheet. All the air must trough the tube socket.<\/p>\n
\n<\/a>This are the power supple circuit boards. I made all by my self.<\/p>\n
\n<\/a>This is the self made adapter for the big load capacitor.<\/p>\n
\n<\/a>Here he is build in, with the adapter.<\/p>\n
\n<\/a>The UHF trap for the tube. The resistor and the cooper is very solid \ud83d\ude42<\/p>\n
\n<\/a>The first version of the anode coil, everything is self made. This is POM plastic.<\/p>\n
\n<\/a>The vacuum relays for the transmit\/receive switching<\/p>\n
\n<\/a>The plate side of the PI-Filter<\/p>\n
\nA overview of the work, so far<\/p>\n
\n<\/a>Now is everything finish inside.<\/p>\n
\n<\/a>The underside is finish too.\u00a0The Soft start with overheat control is from China. The Rest of the PCBs is self made. The voltages are 3800V DC, 24V DC, 12.6V AC.<\/p>\n
\n<\/a>The anode voltage is near 4000 volts!<\/p>\n
\n<\/a>The first test front look like this<\/p>\n
\n<\/a>This is the finish linear. Its stable like a tank \ud83d\ude42<\/p>\n
\n40m 1500W
\n30m 1500W
\n20m 1500W
\n17m 1500W
\n15m 1500W
\n12m 1400W
\n10m 1200W
\n06m 0650W (But its only 25W allowed in Germany on 6m! So I test it only on a dummy)
\nWith my FT-277 and the 150W input the linear makes 2000W Output \ud83d\ude42
\nIn Germany is only 750W PEP allowed on shortwave. So the Linear works with under 50% and stay quit cool and make a clean signal \ud83d\ude42<\/p>\n
\n<\/a><\/p>\n