I've found that there are some clip-on ferrite cores that you can buy,
whereby the cable runs inside rather than as a coil outside. Do you think
these are worth trying - say attaching one to the wind sensor cable and one
to the rain cable. They're around £1-2 each.

Mike

"Neil" wrote in message
...
Mike Lewis wrote:
I've discovered that the problems we've been experiencing on our
Instromet weather station with regards to spikes in rainfall and
windspeed data is due to RF interference. The source of this is going to
be difficult to track down, but one solution I've read is to fit a
ferrite? to the serial cable connected to the PC.

Does anyone else have experience of this sort of interference and, if so,
what solutions have you found?

Mike

Pitsford Hall
www.northantsweather.org.uk



Mike

RF interference is well known to radio hams.

Despite having held a licence for 30 years, it's a long time since I fired
up a rig!!!

ISTR that 2 or 3 turns through a "donut" ferrite coil was the starting
point to curing RFI, although that may impact on the wanted signals if the
baud rate is high enough.

Very much a "suck it and see" game with RFI I'm afraid.

Good luck

Regards

Neil