Well the RF amplifier looks fine from the picture however, you are getting a second hand transistor probably used and abused for a long time. On top of that, you are not getting a SD2931-11 transistor instead of a BLF177 like the one in the picture. The seller has no idea about customer service and unfortunately no help whatsoever. If you ask the reason of the difference, he says SD2931 and BLF177 are the same. When I ask for the right transistor (BLF177) in dispute, he accepts the proposal but then cuts the communication right there since I'm out of the seller protection once the dispute is closed. What a great customer service! DEAR SELLER: YOU CAN NOT SEND ANYTHING OTHER THAN WHAT'S SHOWN IN THE PICTURE. IT'S THE FIRST RULE IN ONLINE BUSINESS! LEARN! Spare yourself some time and look for better alternatives at dutchrfshop.nl or pcs-electronics.com These guys don't sell you second or third hand product. You get something brand new with a fraction increase in cost!