The user manual contains important information and it is recommended that the user reads it. Of particular importance is the section relating to the setting of the analyser's reference level. Failure to set the reference level correctly can result in lower level signals not being seen and usually results in this commonly-asked question,

"When I connect an antenna to my radio, I cannot see any signals the 88-108MHz FM band, or just a few signals shown at a very low level. Why is this happening and how do I fix it?" 

"The answer my friend is not blowing In the wind" (With apologies to Bob Dylan)

The answer can be found on page 6 of the user manual. Setting the reference level at, or close to zero is like turning the RF gain control on your receiver  to minimum - with the results you would expect, a high noise floor and low sensitivity. The analyser does not incorporate an AGC control, nor should it. The gain (and ultimate dynamic range) is set by the reference level control.

A shortcut link to the manual will have been placed on your desktop by the analyser's installer. A copy of the manual can also be found in the analyser's installation folder:

 C:/Program Files (x86)/Andrew Developments/RSP-Spectrum Analyser .

A copy of the manual may also be viewed here. Click here to view the RSP_Spectrum_Analyser_User_Manual V1.2.pdf.

The manual will open in a new browser tab, just close the tab when you are finished. You will not leave the website, you will still be on this page. If you want to save a copy of the manual, right-click on the above link and select Save Link As... The manual will be downloaded  to wherever your browser saves downloaded files.