Check the listing for details. Kratos/General Microwave Programmable RF Attenuator 2-4 GHz 64dB 3492-64 tested. Condition: Used. Listed at 22.00 USD. General Microwave/Kratos Pin Diode step attenuator, 3498-62, 8-18 GHz max attenuation of 64 dB, min step .03 dB., tested as shown, specs below, and at the Kratos web site. it looks like it's working but I didn't take the data in a way that makes it obvious - I should have put markers at 2,3,4 GHz but I was thinking it was a 7 GHz part...So that dip above 7 GHz that was worrying me is not an issue, it's way out of band for this unit - the slope as a function of frequency seems hither than I'd expect, but it's not trouble what the data sheet says, maybe it's even in spec. I'll set the price a bit lower than normal for this reason (and I don't want to retest it).per connection below, yellow is -12, blue is + 12, black is groundNote to me: top gray drawerI normally ship within 24 hours of your order, but the post office does not always initiate tracking when I put the packages in the drop off box. Check out my other items!