QRP  LDMOS  Ham Radio Amplifier 160-6 meters  5 watts in for 200 watts out.

Description

QRP LDMOS Ham Radio Amplifier Foundation(less device). Just built with all new parts(except a repurpoused on-off switch)  LDMOS amplifier using a pallet from DXworld in greece covering 160 thru 6 meters( the pallet advertised on ebay for 0 plus surcharges)  a mean well 26 volt 20 amp power supply, LM7812 12 volt regulator chip to relays and bias.  1 thousand watt omron relays for keying and built in antenna relays, 30 amp meter with shunt,  repurposed cabinet measuring 16 inches long, 12 inches deep, 7 inches high.   plenty of room for another 24 volt power supply to use a 48 volt output chip.   as built you can use any 24-28 volt 480 watt chip, such as a mrf141a and plenty of other chips requirering about 5 watts drive.  the amplifier currently has a mrf9180 900mhz chip. you can add an output filter if you want, the FCC does not require filters on a DIY amplifier.    schematic of pallet amp is supplied.  unit weighs 10 lbs.  average shipping cost conus this size and weight. Yes, it has a top cover also, removed for pictures.this would make a great amp for your QRP rig. also, new rotron 100cfm fan, over 0 invested.  And, yes, i built it..Lyle N4QH.