On Sat, 28 Jan 2006 07:25:58 -0500, "Lenny"
wrote:

Great pix, thanks Weatherall.
Does the Ferrite Rod only aid in AM broadcast reception, or does it also aid
SW reception?
Lenny

In most AM/FM radios, the ferrite bar antenna is for AM reception
only. A separate whip antenna for FM is reasonably close to a quarter
wavelength on the FM frequencies; a 1/4 wave whip antenna on the AM
band, 530 to 1700 Khz, would be hundreds of feet long, hence the
shortened AM antenna using the ferrite rod. On little radios, the rod
is a couple of inches long, on others such as the C.Crane CCRadio or
the GE SuperRadio the rod is bigger, about 8 inches long, hence their
supposed "DXing" capabilities for AM.

On shortwave radios, I'm not sure which frequencies the ferrite bar
would be used for, certainly the American AM broadcast band, not sure
about others.

One disadvantage to the whip antenna, it is vertical, and vertical
polarization picks up more manmade interference. Horizontal antennas
such as the ferrite bar are a little more immune.

Bob
k5qwg


"weatherall" wrote in message
...

Lenny Wrote:
OK, I'll admit it.
I don't know what people are talking about when they say the E1 doesn't
have
an AM antenna.
Doesn't it have a whip antenna.
What more could you want?
What the heck is a "ferrite rod antenna" anyway?


Hi Lenny:
Here are pictures of the insides of a Tecsun PL-200 radio. It's hosted
on radiointel.com, a fun & useful site. In some of the pictures you
will see tightly coiled copper wire around a bar (that's the ferrite).
It's at the top of the radio, and would be on the left side if you're
looking at the front.

http://www.radiointel.com/review-tecsunpl200.htm


--
weatherall