I need to buy a few 2-3) coax adapters, N-female to PL-259 Male. Amphenol parts seem to be close to unobtainium -- > $160 each in lots of 7, delivery in 3 months. I see nothing in the surplus market. Don't want junk. I see RF Industries parts listed in the $5 range. Any experience with quality of their products? 73, Jim K9YC