How does a Double Bazooka antenna work?
How does a Double Bazooka antenna work?
The Double Bazooka is a unique design alternative to a dipole. It is made of coax cable, instead of a single strand of copper wire. The braided copper shield of the coax is the actual RF radiator, and the center conductor acts like a balun or matching transformer to provide a DC ground.
What is a Double Bazooka antenna?
A DOUBLE BAZOOKA antenna is an extremely broad banded Half Wave Antenna which can operate efficiently across an entire Ham band with little change to the SWR. The BAZOOKA antenna design was developed by the staff of M.I.T. in the early 1940’s for use by the US. Government as a radar antenna.
How long is a double bazooka antenna?
A double bazooka beats a dipole in bandwidth and performance any day. Approx. Length : 10M – 16′ ft.
What is a delta loop antenna?
Delta Loops are very practical single band HF antennas. Typically, they are arranged with equal length sides (an equilateral triangle) – having a horizontal side at the top or the base.
What is antenna Balun?
A balun (balanced line to unbalanced line) is a device that transforms a balanced transmission line to an unbalanced transmission line. Baluns are hooked up to antenna systems to help electricity run smoothly from the ground to the device.
How do you feed a delta loop antenna?
Feeding the Delta slightly up from the corner, around 1/4 of the side length up, results in vertical polarization. Note the current minimum is at the apex, and in the middle of the bottom. The often used “corner feed” skews the current and polarizations. At 28 degrees elevation, the delta loop has -.
When should I use an antenna balun?
Baluns are used in many areas to transition between balanced & unbalanced scenarios: one key area is for radio frequency, RF applications for antennas. RF baluns are used with many antennas and their feeders to transform a balanced feed or line to an unbalanced one.
Is a delta loop antenna directional?
The Delta loop works on the magnetic loop principle which gives it a very high signal to noise ratio, background noise is significantly reduced and in some cases virtually eliminated when compared to other multiband antennas.. The Delta Loop has mainly omni directional properties so a rotator is not essential.
Does my antenna need a balun?
Firstly, we will need a balun to use a balanced line feeder or balanced antenna in any case as radios today are not presenting a balanced output. The next point is the effect that any close by objects have on the balanced feed line, walls, buildings in general, towers, all metal objects, ground, everything!