Sentry Photo
Physical and electrical length are not the same thing, of course. For best efficiency something close to a resonant half-wave dipole would be the antenna of choice (although I understand that 'end effects' - whatever they might be - mean that the length would be slightly different). For example, when 27 MHz CB was first introduced into the UK nearly 24 years ago, the 9 ft quarter wave whip aerials used by good 'ole boys - yee hah - in the US were outlawed and base-loaded whips of about 1.5m were all that were permitted in the UK. Interestingly (?), the height restriction was nothing to do with radio but stemmed from the mods and rockers era of the mid-60s when huge tiger-tail topped plastic whip aerials on the backs of the mods' weedy little Lambrettas were deemed a hazard to the public and were restricted to 60". Or so I was once told.
But are the E-3D wingtip antennae of fixed physical length? Or do they exend and retract to match the required wavelength?
But are the E-3D wingtip antennae of fixed physical length? Or do they exend and retract to match the required wavelength?
Join Date: Oct 2005
Location: UK
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But are the E-3D wingtip antennae of fixed physical length? Or do they exend and retract to match the required wavelength?
The dishwasher water is used to cool the radar - its called LCS (Liquid Cooling System)
