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Ralph Mowery · July 25th 16, 03:10 PM posted to rec.radio.amateur.antenna

In article , says...

On 07/22/2016 12:44 PM, Ralph Mowery wrote:

Does anyone have a good link or design for a 6:1 balun ?

Hello, and are you sure of the required impedance ratio? What operating
frequency range (bandwidth) is required? The 6:1 ratio seems oddball
since in most practical applications integer-squared values suffice. A
6:1 broadband balun using tapered transmission lines (no ferrites
required) is realizable but I think the fabrication required is not
something most hams would want to tackle.

Having said all that a quick Google results in a number of hits
including how-to U-toob videos. Sincerely, and 73s from N4GGO,

Yes, I want a 6:1 balun. It is for an off center fed antenna that is up
around 50 to 60 feet. To be used from 80 to 10 meters. I have had one
up for a number of years and used a 4:1 bought balun that is suspose to
be good for 5 KW. It heats up and the SWR goes up after several minutes
of SSB usage with about 1200 watts. Works fine at 600 watts. My
research seems to incicate that at that height a 6:1 is a beter match.

I have seen a few that seem to use way too many turns for the core and
size of wire I am using (number 14 enamel type).

I tried one that had 2 windings of 11 turns and tapped at 9 turns and it
was not any good at all when I tested it.

Found another design that used 5 wires and 5 turns each. I am now in
the process of building it. Layed out on the bench hooked to a RLB it
looks good. So now to get it into a box and hooked to the antenna.

I built one using the same lengths of wire for field day and at 25 feet
the swr looks a lot beter than mine at 60 feet. Thought I would try a
6:1 as that is what some research seems to indicate at that height.

I agree, 6:1 does seem to be an odd ball number and info hard to come
by. I did see some info on one that used two seperate cores and the
winding on each core for a 4:1 and then paralled or something for the
6:1. I just did not like that design.

I don't think a tapered line would work over a broad range,and even if
it did, I would not want to try to build and use one.
Sort of comes under the open wire feeders. I just would not want to use
them due to getting the feeders into the shack.

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