We do the best we can to make a commercially successful product. Since we know we can't please everyone who plays a Monday morning quarterback, we do the best we can given the constraints of the business, a fact often overlooked by the enthusiasts.Can't wait for the Ken Nist review
They'd better have gotten it right!!
Also, how would these work ganged or stacked?The improved version of the DB2 HDTV antenna offers nearly twice the gain of its predecessor.
Schneider said that the unit's design allows it to reach into the top of the upper VHF band as well, so if some of the digital channels in your area are being broadcast in what used to be analog channels 7 to 13,
The antenna does have a very nice look to it, and Im sure thats what they were going for.The non-horizontal reflector elements could best be described as "radial" then, since they are not completely vertical. The tips of the bowties match the curve of the radial reflector elements too.
Yep. Nearly twice the gain would mean a nearly 3 dbi increase in gain, and I cant see how it can achieve that. The old DB2 was pretty good.This claim may be overstated, though interesting: [is this claim just for the 2 bay?]
The improved version of the DB2 HDTV antenna offers nearly twice the gain of its predecessor.
That's a pretty typical behavior for colinear arrays such as the bowtie or for yagi style antennas. If you want them to be broadband, you generally have to accept that gain peaks at the top of the design band and will then drop as a function of lowered frequency. The challenge is to keep them good enough without destroying VSWR (efficiency) which would negate the raw gain improvements.Why peak on the highest channel...unless there's an immediate drop-off.
Gotta love the enthusiasts! We haven't even made the first production unit and they already want to experiment with it. I suspect that we'll have to wait to find out the answer to that question.Also, how would these work ganged or stacked?
I'd plan on a AVERAGE of 2 dB gain across the 14-51 band. Some frequencies will improve more than others. Keep in mind that the process of rescaling the bowtie antenna does two things: 1) It slides the gain curve "leftward" on gain vs. frequency chart and 2) It causes the antenna to physically grow in size, typically by 20-25%. There aren't any free lunches.Nearly twice the gain would mean a nearly 3 dbi increase in gain, and I cant see how it can achieve that. The old DB2 was pretty good.
You didn't hear that from us. We've only announced the DB2 & DB4...I heard the DB-8 will also be re-jigged, looking forward to it.
So you guys are after the holy grail too, I see. Here's a huge amount of material from our members regarding baluns:ADTech said:If you happen to know of a commercially available balun, preferably SMD, that offers flat response from 50 to 700 MHZ with less than 1 dB of insertion loss, I'd sure like to get my hands on some samples.
Isn't everyone? When you spend tens of thousands of dollars improving or creating a design, you can't afford to squander any performance with a poor balun.So you guys are after the holy grail too, I see.
Yes, but they don't fall of the face of the earth above that. I have the the prototype DB2 hooked up to a spectrum analyzer and I can see all the local activity on the local cellular bands around 860 MHZ.These are likely designed for up to channel 51 only.
Let's just say it's a fluid situation and leave it at that for the moment...with tentative plans