dillon@CORY.BERKELEY.EDU (Matt Dillon) (08/26/88)
:In article <453@jc3b21.UUCP> fgd3@jc3b21.UUCP (Fabbian G. Dufoe) writes:
:>In article <162@uceng.UC.EDU>, rsexton@uceng.UC.EDU (robert sexton) writes
:>about RF noise from his Amiga, particularly around 89.7 MHz. The NPR
:>station in St. Petersburg is on 89.2 and I get a very low-level hiss when
:>the screen is being changed.
:>--Fabbian Dufoe
:
:I've noticed this interference with NPR as well. I have an A1000 with a
:Starboard, and it is about 1 foot from my reciever (the stereo is necessary
:for software development, especially when blasting Pink Floyd). My personal
:theory is that the Amiga is searching for the NPR station and deliberately
:causing the interference. This sounds more plausible when you consider how
:much of the system software was written while listening to VERY loud
:Led Zeppelin. I rest my case :-).
The problem is that the starboard CASE is not grounded to the
AMIGA RF GND. That is, for an A1000 you have to open up the plastic top to
get to the RF shielding. I'd use copper tape (thin copper sticky on one side).
Tape it to the RF shielding and bring it out of the A1000 (replacing the
plastic top), then tape it to the starboard case (may have to scrape to get
to conducting metal). YOU WANT AS BIG A GROUND PATH AS POSSIBLE... e.g. I
brought out two strips of copper tape, each strip being two inches wide.
I have a starboard II also, w/SCSI. By doing that and shielding the
SCSI cable w/ copper tape, and taping the cable to the hard drive case (which
is metal in my case) I get very little noise.
-Mattbinger@p.cs.uiuc.edu (08/29/88)
My problem is that my A1000 with a 1Meg expansion box (by Kline-tronics) jams two out of four local TV stations. By the way, except for this little problem, I have had no trouble with this memory, and it only cost $250. When I unplug the extra memory, the problem goes away. The memory case seems to be well grounded. Does anyone have any suggestions or solutions to this one? David Binger University of Illinois binger@p.cs.uiuc.edu