Hi.
little weekend DIY and first results.
modification of the E7495B file in \ flash \ egServer \ Dragonfly \ Receivers
Analyzer from 100 Khz to 3500 Mhz.

( tested with R&S FSEA -20dBm , 0 span generator )
works from 400 Khz but with a significant lack of sensitivity.
a little loss above 3.2 Ghz may be due to my poor 3 meter RG58.
but the HF generator still takes only 375 Mhz to 2.5 Ghz.

I was able to get it out down to 0 dbm. ( tested just a few frequencies )
When i go to 2.7 Ghz in spectrum mode, i have an error message :
Non-fatal error on device Receiver, cummulative error count : 5
but not problem for measurements.
GPS : Locked and green but below 375 Mhz and above 2700 Mhz, GPS always locked but red cross.
had to reboot my 7495B to find the GPS in green in the 375 to 2700 Mhz range.