loop aerial
frame aerial

For this reason, a null position of the loop aerial is used.

From the top of it a twelveinch loop aerial projected.

A simple form of directional antenna is the loop aerial.

There was a loop aerial of the directional type, which plugged into a jack.

He's got the little loop aerials at the back of portables, you know the

He switched on, pressed the earplug into his ear, and began to turn the loop aerial slowly.

Reception We tuned in to all the broadcast channels with the loop aerial and found that some sets gave a far better picture than others.

This loop aerial uses a minimum signal (null) to find the direction of the station.

Thus the loop aerial is always, in effect, kept pointing at the ground station to which the receiver is tuned.

Next, the directional loop aerial was swung slowly.

The RC needle is simply a remote indication of the loop aerial which receives signals from the ground station.

It originally broadcast to the university campus on 312m medium wave using an inductive loop aerial system around the various halls of residence.

At that time, of course, the only means of broadcasting was very low power, using induction loop aerials to broadcast to Halls of residence.

With motions amazingly speedy, The Shadow set up the portable radio receiver and aligned the directional loop aerial.

This loop aerial, usually fitted on a small, "teardrop" shaped mounting, was standard equipment on most fighter aircraft from late 1943 on.

GHI comment: The only sets that gave us a really good picture on the loop aerial were Philips and Sony.

On June 10, 1907, he filed a patent for a Magnetic Aerial (a loop aerial) which was granted on January 21, 1908.

Pickard is well known for his early inventions in connection with loop aerials, direction-finding systems and static mitigating devices used at Otter Cliffs during the war.

To resolve the two direction possibilities, a sense antenna is used, the sense aerial has no directional properties but has the same sensitivity as the loop aerial.

Like all M.F.V.S it has a loop aerial for direction finding, he just had to keep turning the loop till the signal was at full strength.

Then the hand, with a quick stroke, drew a perfectly straight line across the paper - the line going in the exact direction the loop aerial of the radio pointed.

A loop aerial for radio navigation, mounted on a small "teardrop" base was fitted under the rear fuselage, offset slightly to port, with an additional short "whip" aerial aft of this.

The NULL is used, as small angular deflections of the loop aerial near its null positions produce larger changes in current than similar angular changes near the loops max positions.

if you do not have an external aerial socket in the room where you want the TV to be sited, check that the loop aerial gives an acceptable picture quality before you buy the set

Due to the very short duration of the lightning flashes the scientists found the normal loop aerial was not capable of being rotated quickly enough to obtain a bearing pinpointing the electromagnetic pulse of the lightning.

A dedicated radio vehicle with the bedstead frame aerial.

Type 25 1914-1914 Front drive, straight frame aerial ladder

"I'd seen it in your holiday snapshots as well as that framed aerial photo.

After 1941 the Germans modified 43 cars as railway-protection vehicles (Schienenpanzer); they could drive on the tracks themselves by means of special wheels and were fitted with large radio frame aerials.

It was a simple frame aerial and so primitive that it could be put together on the spot: a rectangular, rotating lattice frame standing on edge, roughly wound round with wire.