These are 26.5 ghz attenuators tested on my network anakyzer , that have ac dc coupling switches in other words a dc block along with 70 db total atten with 10 db steps. Fully controllable with the hp attenuator controllers and cable pair which i sell for 300$ to 1700$ depending on the model. Theres 3 types.

I have about 50 of these . 150 $ each is a steal .

NEW POLICY READ!!! Buyer to pay shipping for  both ways for all returns.We will repair all parts and labor for no out of pocket cost to you except the shipping .For any refunds there is a 3 % restocking fee unless the item is exchanged which is easier for us often  since we have multiples of these in stock usually . Buyer will also accrue another 3% paypal fee having the money returned by using paypal if paid via paypal originally. (this new rule is because of paypal’s new greedy way of not returning the original fee back on returns/refunds and I regrettably have to bring this new policy to you the buyers.)The point is you will save a lot more money doing an exchange over doing a return