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nd if I point the DB8 toward Indianapolis, will it be possible for me to receive Dayton stations as well?
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No. At nearly a right angle to the antenna's boresight, it's almost as blind as a bat by design. In antenna-speak, it's called a "null". The opposite of a null,a peak, is called a "lobe" with the major lobe being straight ahead. On a standard DB8 (not 'e'), the front reception lobe is most sensitive straight ahead out to +/- 15 to 25° on either side. Reception then drops off rapidly as one goes further off towards the side left or right.
The DB8e has panels that allow it them to be aimed independently. It actually works better than I had initially expected to, but it's not always successful. My observation is that is seems to work best when the stations are separated by about 90° and the corresponding panel adjustment puts each panel's null into the other panel's main lobe. This minimizes destructive interference that can otherwise occur if the same signals were received by both panels then combined out of phase (phase cancellation). Having the panels aimed at different angles also reduces the peak sensitivity of each panel.
Most antennas have minor lobes and nulls off the back as well as the front. The DB8's front to back ratio is in the mid-20 dB range (depending on channel) so aiming the front at the weak signals and the back at the stronger ones often works okay if the relative signal powers and angles work out.
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I wouldn't call the DB8 multidirectional; it's very directional.
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Hmmm..... No comment..... The boss insists on calling it that so that's what it gets called.
FYI, the Juice is going to be tough to find for the next few months. We had a production delay and replenishment is going to be "later this year". Due to some long lead times for some of the components, I'll just say "sometime 4th quarter this year" for now. There are still a limited number in stock at online retailers who fulfill from one of our large distributors, but when that inventory is depleted, that will be it until the new ones come in.