Usually nothing is for free and there are tradeoffs. Yet for the dipole's I have been looking at, Sinclair's have 106 Mhz bandwith and a DB-408 has 20Mhz both with the same VSWR spec (<1.5). I am surprised by that. They are both folded dipole and I would think that any patents have long since expired. If 106 Mhz was possible with no tradeoffs, I would think the DB-408 would do it if for nothing else than marketing purposes. If there is some benefit to a design with a tighter bandwidth, I don't see it in the DB-408 specs.
I could see it if it were reflected in the VSWR spec (higher VSWR spec for a wider bandwidth), but that does not appear to be the case.
Any ideas?
Thanks.
I could see it if it were reflected in the VSWR spec (higher VSWR spec for a wider bandwidth), but that does not appear to be the case.
Any ideas?
Thanks.