Up for your consideration is an ISS TR6000 frequency agile medium wave am broadcast transmitter. Covers full band from 530 to 1700 kHz with a variable power output of 0-10 Watts. These can also be locked to a gps frequency standard using the included rack mount gps time base. You get a single transmitter, gps time base / frequency standard with 10 MHz output to feed the gps input of the transmitter and gps antenna. I only have one psu for the transmitters i am keeping, so there is no power supply included. The gps time base runs using 12vdc on the db9 port, and the tr6000 runs on 24vdc. I have pdf manuals for both the ese es101 gps time base and the tr6000. This is a current model transmitter from ISS (information station specialists), and unlike LPB, it is still supported. This particular unit was manufactured in 2007. This transmitter is currently set to 1700 kHz. These can be used in the US for part 15 carrier current or free radiate educational campus station, Part 73 licensed broadcast station as a low power pre sunrise / post sunset or backup transmitter, or can be utilized in part 90 TIS stations. These are FCC / IC certified. This is a very versatile low power transmitter and is much higher quality than the current eBay offerings elsewhere on the site. These are manufactured in the USA and retail for approx $3500.00 without the included gps time base. I'm only selling to play catch up on some bills, or trust me, I wouldn't be selling this unit as these rarely pop up on eBay. This unit has been tested and was also pulled from a working environment. I offer local pickup in Scottsbluff NE, and if you do local pickup, we can put it on the communications service monitor and show you it's working properly.