exact item shown,From the part number, this is 23.0 to 27?  GHz isolator if I am parsing the part number correctly.  This is a small isolator so it is what I'd expect for higher frequencies, but I can't find the part number in the company's catalog.  This part was made after Sierra Microwave reloated to Texas, so it's pretty current. The highest my signal generator goes is 22 GHz, so with a power meter I can see the attenuation decrease as I get to 22, it's holding pretty steady from 21 to 22, so it's credible that this is for 23 GHz and up  Note, I will combine shipping for you if you get multiple items, please ask.

Note to me: top drawer small gray cabinet

I 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! 


From the "Where are they now" page:  

Aertech was founded in the late 1950s or early 60s by  Fred Schumacher and Harold Harrison and became TRW Microwave in 1974 (we believe). Here is a site created by Brooke Clark that gives a detailed history of Aertech.

Here is some Aertech info from Tom provided this account of what it was like to work at Aertech (TRW Microwave) from 1975-78. It sounds like a good place to work:

Aertech had a large lot, on which stood a building that Signetics rented, the old building (building 1), a new 2-story building (building 2, later on the company shrunk into this), and a third one, with stores in it, among others, De La Cruz Deli... If you walked across the parking lot between the buildings, it seemed convenient to stop by for a beer or to play a little pool during working hours! As Aertech did not have a paging system, and if I could not find someone by phone in either building, I'd check the deli also.