Christian Pernegger wrote:
Question: Are there any disadvantages in having the radio and one antenna internal? I'm thinking interference, added noise in the analog stages ...
Probably very little, if any. Spurious noise from computing equipment is generally strongest at the lowest frequencies, and it falls off fairly rapidly in intensity the higher you go. That's why you tend to have so much more trouble with AM radio interference (~1 MHz) than FM (~100 MHz).
802.11 operates on the 2400 MHz band, which is high enough for most computing equipment to generate relatively little noise. Even high-end CPUs like Pentium 4s and Athlons with clock speeds in the multi-GHz region confine signals at those frequencies to inside the chip; the external interfaces to memory and peripherals that can radiate interference run at slower speeds, e.g., 800 MHz or 1 GHz. Harmonics can certainly exist at higher frequencies, but they probably won't be all that strong.
The biggest source of radio frequency noise from Squeezeboxes has been the little power supplies that they bundle with them. Slimdevices ought to return them for a refund and use a cleaner model. Quite a few people are now complaining that they can't listen to an AM radio anywhere in a house that has a Squeezebox.
Phil _______________________________________________ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss
