Hello Hjalmar, Regarding your recent message, where you asked:
> I've got HP analyzer 8558B (0.1 - 1500 MHz) in a 182T mainframe. Does > anyone know if there is a higher freq. version available for the same 182T > frame. I recall that there was a 8559A but did that one fit ?. If you know > where I can get the higer freq. version please let me know. Thank you kindly. Yes, you are correct, the HP-8559A is the microwave version of the '8558B. It was released sometime around 1980, and if I recall correctly was manu- factured until sometime in the late 1980's. It was the last of this series of analog, manual spectrum analyzers (there may have been a "B" version, but I'm not sure about that). I think it will work in any of the 180-series display frames. The '8559A frequency display is a voltmeter that read and displayed a voltage analog of frequency. The analog IF board uses a metalic strip plated along one edge to provide an adequate grounding connection. Otherwise, the stepped gains will be slightly higher than they should be (feedback via the ground, which the edge ground cured). As to where to get one, I think you will be limited to used equipment dealers. (Perhaps there are a few on the Web?) If you can get one that's in good shape, do so! It's not as fancy as modern spectrum analyzers, but the '8559A was a very good benchtop tool. (As you might have guessed, I lived with this instrument for several years.) Good luck! -- Scott Roleson ----------------------------------------------------------------------- Scott Roleson, PE | Internet: [email protected] Telecom & EMC Engineer | http://www.WP.com/SRoleson San Diego AIO Division MS 8-90 | Telephone: +1-619-655-4809 Hewlett-Packard Company | FAX: +1-619-655-5931 16399 W. Bernardo Drive | Amateur Radio: KC7CJ San Diego, CA 92127-1899 USA | Any opinions are my own, not HP's. ----------------------------------------------------------------------- Note: Phone/FAX area codes will change from 619 to 858 on 12 June 1999.
