I've had good success using the double-core balun kit Wireman sells.
Not sure why you'd have 3:1 to 4:1 SWR for a well-designed antenna, though.
Make the balun 4:1 and it should play forever.
Quoting "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>:
> I've been looking at the series 830, 831 an 832 balun kits from the
> wireman. These use T-200-1 and T-200-2 cores. Would a balun like these
> be capable of handling the full 75/80 meter band with the legal limit
> CCS (Digital). I figure the SWR could reach between 3 and 4:1.
> I've not had a good track record using the current batch of W2AU baluns
> which appear to be pretty light, at least to me.
> This type of balun also lets me keep the entire antenna at DC ground
> whereas the choke, or current balun does not. With the number of
> strikes my tower takes having one half of the dipole floating makes me a
> bit nervous.
> Actually the plans, at present, call for the balun at the antenna and
> then the ferrite beads (choke) back near the remote switch for isolation
> as shown in the antenna handbook when
> using multiple, switched slopers.
> TIA and 73
> Roger (K8RI)
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