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MFJ Switchable RF Dummy Load
Page 26 of MFJ new 2013 ham catalog MFJ-251 gives you five dummy loads in one box! Select from 16.6, 25, 50, 100 or 150 Ohms with a front panel switch. MFJ-251 simulates high impedances and low impedances with an SWR of 3:1, 2:1 and 1:1 so you can test and calibrate your wattmeters and test SWR accuracy. At 50 Ohms it handles 300 Watts for 30 seconds with an SWR below 1.1:1 to 30 MHz. MFJ-251 covers Dc to 60 MHz and has SO-239 connectors. MFJ-251 measures a compact 4.5Wx 2.25H x6.5D inches. Use optional 12 VDC/110 VAC adaptor, MFJ-1312D, $15.95.