Try Snap-on-choke, I think Radio shmack stil carries them.
They are two U shaped ferite pieces with plastic clamp. (Or split core
cylindrical ferite cores as seen on some keyboard or USB cables.)
You open them up, wing the wire or cord around the "legs" and close it. Put
it close to the computer case. It shouyld clear the problem.
You might wanna try which cable is most "antenna" and picking up RF

73 Yuri, K3BU


"John, N9JG" wrote in message
t...
When I operate on 75 meter SSB with my transceiver, my computer beeps and
disconnects/reconnects my USB connected keyboard. Note that I do not have
this problem on 40 meter SSB. My computer is located on the second floor
of
a brick house, and one end of my dipole is about 15 feet from my shack.

From comments made by others, I may have to put RF filters on the cables
and wires connected to my computer. I am contemplating the use of
Amidon FT-240-77 ferrite toroids, which have an I.D. of 1.4 inches and
cost $9 each. If I buy in quantities of 10, is there a cheaper source
for this toroid?

Any comments or suggestions on this problem would be appreciated.