Re: Ribbon Mic picking up Radio Frequency Interference

On Sep 15, 12:30 pm, Truth <julian8888...@xxxxxxxxxxx> wrote:
On Sep 15, 5:58 am, Eeyore <rabbitsfriendsandrelati...@xxxxxxxxxxx>
wrote:



Paul Stamler wrote:
"Eeyore" wrote
Truth wrote:

Since each mic is picking up it's own frequency that means the mic tubes
are probably to blame right?

Bwahahaahahahaha ! Which crytsal ball did you get that priceless idea from
?

Stop kidding yourself you know enough to draw conclusions like that.

Actually, he may be right.

That it's " the mic tubes are probably to blame " ?

Come on Paul. He probably thinks it can be fixed by replacing them with 'magic
audiophool tubes' assembled under a starlit night sky by naked virgins at the
time of a new moon.

Whatever it is, I'm sure that *the tubes* are not uniquely to blame.

Graham

note the part that says: "tube-inside the equipment"

"RFI symptoms The tolerance of equipment to RFI depends largely on how
well it is designed. Generally, symptoms will appear when sufficient
RF energy reaches an active device-IC, transistor, tube-inside the
equipment. The energy can arrive in two ways: radiation or conduction.
As it travels through the air, internal equipment wiring can act as a
receiving antenna and deliver RF voltages directly to an active
device. This is most common in equipment with plastic or wood
enclosures that have no RF shielding ability. Because any wire can
become a receiving antenna, RF energy can also be conducted into the
equipment's active devices via any wire leaving or entering the
equipment. Interference can also arrive via any wire coming into the
building. Because power, telephone, CATV and even driveway intercom,
landscape lighting, or outdoor loudspeaker lines also behave as
outdoor antennas, they are often teeming with AM radio signals and
other interference. The most troublesome sources, however, are
frequently inside the building where the interference is distributed
via the power wiring. At high frequencies, a building's power wiring
behaves like a system of misterminated transmission lines gone
berserk, reflecting RF energy back and forth throughout the power
wiring until it is eventually absorbed or radiated. The RF does not
just follow the green ground wire back to the earth ground rod and
magically disappear."

I posted the article to you before but you don't seem to read things
that are counter to your ideas.

http://svconline.com/mag/avinstall_understanding_controlling_rf/

.

Relevant Pages

  • Re: Ping: DC
    ... and all the circuit grounds on the same bolt. ... that ground wire from the cord should be the longest of the ... wall voltage potential. ... ANSI/UL 813-1996 Commercial Audio Equipment ...
    (alt.guitar.amps)
  • Re: Ping: DC
    ... and all the circuit grounds on the same bolt. ... that ground wire from the cord should be the longest of the ... wall voltage potential. ... ANSI/UL 813-1996 Commercial Audio Equipment ...
    (alt.guitar.amps)
  • Re: Why A Coyote Revolution?
    ... planet, using equipment carried on a ship, I only remember the ... even have been designed to facilitate this process, every piece of ship ... equipment doubling as useful planet-bound equipment. ... beam to the planet's surface energy normally unavaillable to a low-tech ...
    (rec.arts.sf.written)
  • Re: The New Avengers: Blame David Micheline!
    ... will need more equipment; HYDRA needs equipment, ... concluding that Stark was behind "Avengers Disassembled," ... energy Klaw was projecting, given that the original form of energy is ... and other users of sound constructs are actually generating force ...
    (rec.arts.comics.marvel.universe)
  • Re: need help choosing between line level cables
    ... grounding mismatch between equipment. ... Some bulk wire at work that was used to make patch cables. ... Block Google's spam and enjoy Usenet again. ...
    (rec.audio.tech)