Also, how would these work ganged or stacked?
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.
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.
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.
As far as high-VHF is concerned, it will be better than the existing DB2 and DB4 due to the larger sizing of the elements and the reflector. However, these antennas are being designed for peak UHF performance and whatever VHF performance happens to occur will be a bonus. The selected PCB balun is extremely efficient on UHF (0.6 to 0.8 dB insertion loss) but is unkind to VHF frequencies. Since we haven't found a suitable broadband balun that doesn't sacrifice performance on UHF while also offering good performance on VHF, we're using our current UHF balun and focusing on UHF performance. Swapping to the broadband balun used on our C5 would peak VHF performance but would cost almost all of the UHF gain from the redesign. No free lunches, again....
I heard the DB-8 will also be re-jigged, looking forward to it.
You didn't hear that from us.
We've only announced the DB2 & DB4...
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.