RadioBanter - MFJ-1164 AC Line RFI Filter

On Jan 26, 5:45 am, "willismat" wrote:
Anyone ever use one of these? Is it worth $55 or so?

Looking at the manual,
http://www.mfjenterprises.com/man/pdf/MFJ-1164.pdf, it is a simple
LC fitler. 3 inductors, 2 caps and 2 MOVs. I am not a fan of MOVs as
they offer minimal OVP
protection and WHEN they fail they are very likely to catch on fire.

The four outlets are spaced far enough apart to allow, the never to be
dmaned enough, wall warts
to be used. And the case is heavy enough not to slip around.

If you are somewhat skilled, and willing to do the work yourself, you
can build your own RFI filter
that will be a lot more effective for a lot less money.

http://www.hosfelt.com/ offers serval RFI filters, I like the Curtis
F1600CA03. I don't need more
then 3A per outlet, so I use a fitler for each outlet. Curtis and
Corcom, and many other companies,
offer heavier (Higer current) RFI filters.

Unless you are using tube gear, or you are a ham with a "high" powered
transceiver, or have even
more radios then I do, I really doubt that you need a 25A fitler. The
lower power Curtis or Corcom
have a much higher effectiveness.

The Curtis filters are only $0.35 each.
A very good value.

One of my favorite "tricks" is to use spare PC style IEC power cables
and add a female AC mains
connector to the other end that matches the device, and I have placed
fitlers in line with EVERY
RF noise producing device in our home. Very inexpensive and very
effective. I doubt if I have more
then $30 in all of my RFI mains filters and I have spare Curtis for new
additons.

Terry