Hey y'all, Happy New Year!!

I recently bought a $135 Guest brand 10A (2x5) battery charger. The
raterfratzer generates so much RF that it blanks my child bride's Icom 706
Mk2G on all bands even tho it's on a different power supply! It even
garbages up my 448.475 repeater that has it's own internal supply! Arggggg!

Got any ideas on how to quiet it down? I tried ferrite beads t no avail.

Know of any quite, affordable automatic chargers in the 10A range?

TIA, K3DWW

I have to turn off the Guest on Lionheart to use HF. It radiates 20
over S9 noise into the Icom M802's insulated backstay. I tried to
make a Faraday shield for it out of tin foil, but it radiates into the
AC line cord so bad it was useless. I can't shield it all the way up
the dock.

You should hear what an Adler-Barbour 12V electronic-controlled fridge
does to Channel 16, the only channel it eats.....with a throbbing,
bzzt-----bzzt------bzzt bzzt bzzt that will drive you NUTS!

73 DE W4CSC
CHARLESTON

On Wed, 31 Dec 2003 08:40:52 -0500, "Vito" wrote:

Hey y'all, Happy New Year!!

I recently bought a $135 Guest brand 10A (2x5) battery charger. The
raterfratzer generates so much RF that it blanks my child bride's Icom 706
Mk2G on all bands even tho it's on a different power supply! It even
garbages up my 448.475 repeater that has it's own internal supply! Arggggg!

Got any ideas on how to quiet it down? I tried ferrite beads t no avail.

Know of any quite, affordable automatic chargers in the 10A range?

TIA, K3DWW

On Thu, 01 Jan 2004 16:14:32 GMT, (Larry W4CSC) wrote:

I have to turn off the Guest on Lionheart to use HF. It radiates 20
over S9 noise into the Icom M802's insulated backstay. I tried to
make a Faraday shield for it out of tin foil, but it radiates into the
AC line cord so bad it was useless. I can't shield it all the way up
the dock.

You should hear what an Adler-Barbour 12V electronic-controlled fridge
does to Channel 16, the only channel it eats.....with a throbbing,
bzzt-----bzzt------bzzt bzzt bzzt that will drive you NUTS!

73 DE W4CSC
CHARLESTON

On Wed, 31 Dec 2003 08:40:52 -0500, "Vito" wrote:

Hey y'all, Happy New Year!!

I recently bought a $135 Guest brand 10A (2x5) battery charger. The
raterfratzer generates so much RF that it blanks my child bride's Icom 706
Mk2G on all bands even tho it's on a different power supply! It even
garbages up my 448.475 repeater that has it's own internal supply! Arggggg!

Got any ideas on how to quiet it down? I tried ferrite beads t no avail.

Know of any quite, affordable automatic chargers in the 10A range?

TIA, K3DWW

I think it's gotta be the switching power supplies - I have the same
problem on my Contender - it is annoying.

I've wondered if building something solid state and cascade the
voltage if that would help the situation any?

Later,

Tom
S. Woodstock, CT
----------
"I object to fishing tournaments less for
what they do to fish than what they do to
fishermen." Ted Williams - 1964

On Thu, 01 Jan 2004 18:09:47 GMT, Shortwave Sportfishing
wrote:


I think it's gotta be the switching power supplies - I have the same
problem on my Contender - it is annoying.

Any electronics that "switches" is a big transmitter. It generates
harmonic-rich square waves and pulses.

I've wondered if building something solid state and cascade the
voltage if that would help the situation any?


No, actually the solution is quite simple. Go back to the old,
reliable analog chargers that simply put out pulsating DC voltages to
the battery and when you noticed the current dropping off, you turned
the charger off manually or had a saturable reactor that would taper
the charge. The old chargers without the switching electronics we're
in love with, made no radio noise at all......

On Fri, 02 Jan 2004 05:15:32 GMT, (Larry W4CSC) wrote:

On Thu, 01 Jan 2004 18:09:47 GMT, Shortwave Sportfishing
wrote:


I think it's gotta be the switching power supplies - I have the same
problem on my Contender - it is annoying.

Any electronics that "switches" is a big transmitter. It generates
harmonic-rich square waves and pulses.

I've wondered if building something solid state and cascade the
voltage if that would help the situation any?

No, actually the solution is quite simple. Go back to the old,
reliable analog chargers that simply put out pulsating DC voltages to
the battery and when you noticed the current dropping off, you turned
the charger off manually or had a saturable reactor that would taper
the charge. The old chargers without the switching electronics we're
in love with, made no radio noise at all......

That's a good point.

Until the transformers go soft. ;)

Later,

Tom
S. Woodstock, CT
----------
"I object to fishing tournaments less for
what they do to fish than what they do to
fishermen." Ted Williams - 1964

On Fri, 02 Jan 2004 13:02:37 GMT, Shortwave Sportfishing
wrote:


Until the transformers go soft. ;)

S'plane to me how transformers "go soft"??