In article ,
"Doug Dotson" wrote:

Bruce,

Have you actually had problems as extreme as you are relating to
here or have you just been reading the catalogs and seeing
products that you feel will keep ypu out of trouble?

Noise filters I have heard of. Never heard them referred to as
power filters though. I've never had to resort to anything other than a
few ferrite beads to solve noise problems. Some minor comments
below.

Doug
s/v Callista

Oh yea, I have seen some real Doozies of RFI in the last 35 years that
defied the easy fixes that most folks use. Noise is ALWAYS easier to
stop at the source, than at the receiver. Inverters aren't to bad if
you get them installed with short battery leads, and they are designed
for the Marine Enviormewnt. Trace used to build some fairly quiet ones.
Radars have a very nasty habit of haviung the interconnect cable come
ungrounded one one end or the other and radiating noise at the PRR.
the Decca 101's were notorious for this. some of the Rartheon Marine
Radars run Chopped Dc up the interdeck cable, to power the transmitter
and if the cable ground opens, they radiate like crazy. Most of the
alaskan fishing fleet has Oil fired stoves in the galley that use DC
Blower Motors. These make a big racket when not suppressed with Caps.
Refer motors are the same game as well. If you really want a quiet
MF/HF boat, you got to pay the price in RFI Suppression.


Bruce in alaska

--
Bruce (semiretired powderman & exFCC Field Inspector for Southeastern Alaska)
add a 2 before @
Bruce Gordon * Debora Gordon R.N. Bruce's Trading Post
P.O. Box EXI Excursion Inlet South
Juneau, Alaska 99850 Excursion Inlet, Alaska 99850
www.btpost.net www.99850.net