How to Reduce Background Hiss

Problem: I notice a background hiss on receive. Of course the quieter the band
the more noticeable it is. When I turn on EDSP it goes away. Is this the
hiss that goes away when the INRAD frontend mod (got it on order) is
installed?

Solution: The hiss gets reduced considerably when you install the INRAD audio
improvement mod (a capacitor), which comes free with the front-end mod.

73, Dick WC1M