On Thursday, September 6, 2018 at 2:58:07 PM UTC-4, mcp6453 wrote:
On 9/6/2018 2:23 PM, Mike Rivers wrote:
On 9/6/2018 1:02 PM, John Williamson wrote:
If the interference is from a cell tower a block away, then it is RF
RFI is a special case of EMI. They're both electromagnetic radiation.
What you get from a power line or a wall wart is interference from
electromagnetic induction.
Picky, picky.
A friend of mine with this problem actually got Verizon to turn off the
transmitter on the tower that was causing the interference with his
mics, but it took a lot of complaining. Something that might help (he
got the transmitter turned off before he placed the order) is to change
out the connectors on a few mic cables with the Neutric EMI-filtered ones.
http://www.neutrik.com/en/xlr/emc-series/nc3mxx-emc
These connectors appear to be a good idea for high-frequency
interference. It would be interesting to try them. If I were on the road
a lot, I'd probably use cables with them all the time.
If we are talking about dynamic mics that have no active electronics in them, then I would doubt that the mics themselves are susceptible to the RF. A hum bucking coil should not make any difference to RF susceptibility.
However, the mics and the cable can pick up RF and feed it to the preamp which of course can be susceptible to RF.
Have you tried another preamp?
Mark
of course can p