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Message: [QUOTE="Dave_Nevada, post: 1498219, member: 29749"] Yep. The length of wire must match the wavelength of the frequency you are trying to receive. In the music world they call this harmonics- or resonance. You can remember it this way: Length of antenna is inversely proportional (opposite) of the frequency. The higher the frequency, the shorter the antenna. The longer the antenna, the lower the frequency. A young boy doesn't sound like a man because a boy's vocal cords have not grown enough to lower his octave range of his voice. So too the case with musical instruments- look at the strings on a guitar. Wavelength effects everything. From VLF (Very Low Frequency-submarines communicate this way) to Gamma Rays from some distant exploded star or blackhole. They are all a part of the light spectrum. Those job site radios are usually a POS. Usually shorty antennas not matched to the transmitter circuitry- typically designed at 1/4 wavelength- which means you have little transmit strength, or receive capability. The FCC likes it that way. Depending on the bandwidth, they can be useless. You didn't know you were getting into physics today, did you? :jammin: [/QUOTE]

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