Broad Band Terminated Dipoles (BBTD), Tilted Terminated Fold Dipoles (T2FD) and Balanced Termination Folded Dipole BTFD) antennas can be designed to cover a large range of frequencies between 1.8 30 MHz. Longer length antennas generally provide better low frequency efficiency but take up a larger footprint of land. One BBTD that has worked well at the AK6R antenna farm is shown below. Many other designs are available and can be found at www.HFLINK.COM as well as other internet sites. Your mileage may vary using this antenna, but as a general coverage antenna for ham and shortwave broadcast, the simplicity can’t be beat even though an individual dipole on a specific band may out perform this broad band dipole. Palomar Engineers has all the parts you need to build this antenna, so why not give it a try?
Depending on the source of the antenna design, different value baluns are specified. Our Bullet(TM) baluns in ratios of 9:1, 12:1 and 16:1 are excellent for this type of antenna as they are broadband from 1.8-61 MHz and will take up to 500 watts PEP.
Dirty Electricity Filters
“Dirty Electricity” is high frequency noise on 50/60 Hz. power lines, 120 VAC or 240 VAC caused by many sources including electronic devices on the AC power lines and AC power generators including solar and wind generators. The frequency range of the interference is typically 25 kHz to 500 kHz and may affect electronic devices powered by the AC lines as well as other objects (including living ones) in the capture area of the noise.
Effective filtering of the AC power lies can help suppress the dirty electricity in your home, business office or industrial environment. We suggest the following AC power line filters that are easily installed on specific equipment bothered by dirty electricity
Likewise Termination Resistor values vary from 500-1250 ohms and we have a good selection shown HERE: