The source of the broadband QRM that has been plaguing the radio room has finally been identified.
If you’ve recently tried to score a QSO for the club on the 20 through 6 meter bands, you may have heard a modulated 4KHz-wide digital signal on both the Kenwood and Icom rigs. This was finally traced to the network cabling running next to the electrical conduits in the radio room. Unfortunately, the strongest signal is coming from the PC on the MARS shelf, which cannot be disconnected.
Any club members with access to shielded Category 5e cabling are encouraged to donate approximately 25 feet to help eliminate the interference.