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Reviews Categories | Antenna parts, accessories, incl. baluns, hardware, etc. | Balun Designs 1:1 Feedline Isolation Balun Help

Reviews Summary for Balun Designs 1:1 Feedline Isolation Balun
Balun Designs 1:1 Feedline Isolation Balun Reviews: 41 Average rating: 5.0/5 MSRP: $49.95
Description: 1:1 3kw and 6kw baluns providing balanced to unbalanced transition and common mode choking for feedline decoupling
Product is in production.
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ZL2KE Rating: 5/5 Dec 7, 2012 13:04 Send this review to a friend
Outstanding Quality and DX Results  Time owned: 0 to 3 months
My 1113e 1:1 balun has been in use for 3 months with my Inverted Vee. This antenna is 10m / 30 ft up with a 90 degree apex and fed with RG213. The results I get from this Inv V are incredible, even running barefoot with 100w I get S9 reports and European/Russian pile ups when calling CQ. I attribute a large part of the Inv V's performance to the 1113e balun.

The build quality is top notch, second to none. Previously I used two Unadilla W2AU baluns (rated at 1kw) but both burned out when running 500w; they also only gave average signal results. It is difficult to understand the recent 2/5 review here but that balun must have been an anomaly and I would think Bob would replace it for no charge.

As others have said, Bob is responsive to email with prompt and informative replies. Take advantage of his expertise and tell him what your situation is and he will recommend the correct balun. I now have one of his 4114ocf 4:1 baluns for a Windom antenna I will soon put up. Yes these baluns do cost more but it is well worth it for only another $10 or $20. You will never regret buying quality.
N4NYY Rating: 5/5 Mar 1, 2012 15:34 Send this review to a friend
Top notch quality and support  Time owned: 0 to 3 months
Bob Rumsey KZ5R has a nice thing going. I purchased a 1113et, and works splendidly. They typically build on demand, and still got it within 1 week. Bob answers all emails and offers lifetime warranty to the original owner (short of lightning or acts of God). Prices were reasonable, too. Nice job!
N4LCD Rating: 5/5 Jan 22, 2012 18:33 Send this review to a friend
Very high quality. Works great.  Time owned: 3 to 6 months
I bought a 1113e 1:1 to hang at the apex of a 40 meter inverted V. Works great. No RF in the shack. Very high quality. Bob is very responsive to email. Highly recommended.

When I received it, of course I took off the cover to look inside. Wow. Very impressive.

Paul N4LCD
K3NOQ Rating: 5/5 Jan 17, 2012 19:58 Send this review to a friend
FB experience QRP 1110U isolator  Time owned: 0 to 3 months
I ordered two 300 watt isolators from Bob KR5Z on Saturday Morning and they were in my hands, built to order in Wednesdays US Mail! Nice compact construction, wrote couple of questions, Bob emailed me back right away! I installed the one isolator on a new installation on my motor home, and it cleared my problem just as Bob felt it would, second unit preformed AOK also. 5+ experience and product! Made here in the Republic of Texas in the Good Ole USA.
OLLIEOXEN27 Rating: 5/5 May 14, 2011 16:33 Send this review to a friend
allows full power  Time owned: 0 to 3 months
I have the QRP version of this balun rated at 300 watts. Why they call it a qrp balun I have no idea plus it's thirty dollars cheaper than the 3kw version. It allows me to feed my homebrew end fed half waves at a full 100 watts without feedback. The only problem I had is with the balun in line the swr meter by the outside antenna tuner reads a false high swr while the radio's swr meter reads 1:1. Not sure why so. Makes tuneup more difficult. I emailed Bob at Balun designs and he couldn't figure it out either.
ON4WIY Rating: 5/5 Apr 16, 2011 08:38 Send this review to a friend
THAT's what a ham need!  Time owned: 0 to 3 months
Have used several types from different companies but this is the one I need!
Solid,watherproof 100 %,well built.
Swr did not change like with other look a likes ....
It does where it's made for 1Kw-6Kw no problems.
Fair price for excellent products!!!
W0RIC Rating: 5/5 Apr 10, 2011 11:09 Send this review to a friend
Best Balun  Time owned: 6 to 12 months
I've been using this 1:1 Balun for over 6 months. I home brewed a 6 band fan dipole. The dipole is up about 50' in an inverted V configuration.

The antenna is able to handle HIGH POWER with no problems. The balun is coax fed and is an important part of the antenna farm. Thanks for another great product!

BTW, I am using 2 other Balun Designs products on my phased 63' Verticals from Zero-Five Antenna.

N6WIN Rating: 5/5 Mar 15, 2011 22:53 Send this review to a friend
Excellent Value  Time owned: more than 12 months
I have five 3kw models and three 5kw models around my QTH. I use them for antenna feed point chokes and line isolation in the shack. I enjoy contesting and these get used for prolonged periods.

These work FB at keeping common mode current from coming down the coax into my shack, even at the legal limit. I do have near field coupling on control lines, but I suppress those with type 31 toroids from Fairite.

I had one fail on me for an unknown reason. Bob replaced it very quickly under his lifetime warranty. He is excellent with his customer service.
KC6JQT Rating: 5/5 Jan 13, 2011 09:55 Send this review to a friend
Excellent product, well designed and works!  Time owned: 0 to 3 months
I run a fixed 10M vertical, LMR400, Amadon choke beads at feed point, a very good dual 8' rod ground bus 3' out the wall from radio desk and had two issues. First off was the local noise that would come and go. It was a constant warbling humm with some digital pulses in it from time to time. I believe it was a near by Plasma TV or other noisey switching supply radiating from a near by home. Secondly, even with the beads and a perfect 1:1 VSWR I had RF getting into the house with power above 200W. Clearly, my vetical was using the outer LMR400 shield as a radial. It would not effect the well designed/filtered TV's, radios, but would saturate the cheaper or poorer desiged electronics. I have a Nakamichi AMFM reciever in the radio room and with all leads disconnected except for the power cord, audio was heard clearly through the speakers when keyed up. The news is that with the #1113 installed at about 3' below the feed point both issues are resolved. The ham radio reciever is more quiet but without noticable RX sensitivity loss and the warbling humm can just barely be detected and is down 3db from its annoying past level. No that I need it but my operating bandwidth also increase at 1:1. I evaluated a bandwidth now of 1.2MHZ at 1:1 up from 800khz It's obvious that Balun Designs has the right mix of cores, wire, construction, and analyzers to insure what leaves the shop is functional and dialed in. The balun may seem pricey for some but I can attest I tried to build my own and never got mine to work to this level. I'll be back for another when I'm ready to set up my horizontal dipole. 73's
W2RKJ Rating: 5/5 Jan 7, 2011 07:27 Send this review to a friend
What happened to my noise level?  Time owned: 0 to 3 months
I'll add my 2 megahertz into these reviews. I had what I thought was a pretty good balun up for about 7 or so years that I thought was performing well. The SWR looked real well on my analyzer on my 3 band inverted V dipole so who thought there may be a problem. I was however suffering from excessive noise lately on the 75/40/20 meters. I questioned other stations on their noise levels and it appeared I was hearing more trash. I did everything including had my power company come out and investigate and replaced some bad spots in the area. This helped but still my noise level was excessive. I'm talking about minimum levels of S8 to S9. When I switched to my vertical (out of band) the noise went away. I switched to another dipole again out of band but the same company balun noise again. Both baluns are about the same age but no way they both could be having the same problem. I did some research and learned of these baluns and checked their reviews here and decided to give them a try. On their website it states they are for noise reduction. I called Bob and sent him a photo of my homebrew inverted V. Initially on the phone we agreed I should be using a 1:4 balun, after seeing the picture, and because it was a fan dipole it should be a 1:1. I received my custom designed balun. As with all serious hams, it had snowed on the east coast and I put the balun up with about 3 feet of snow on the ground. As per instructions, I drilled the weep holes in the bottom, used 3M rubber tape to seal the PL 259 and the connectors on the sides where the wires are attached to my antenna. I came into the shack, the noise was GONE! My noise level on 20 meters (S4) vanished. 75 and 40 (S6) considerably reduced and unbelievably readable. I have since tuned all three bands for resonance and tune up is a dream. My station has NEVER heard this well --EVER. On the noise, my Ten Tec Jupiter can show a noise level on the meter but the radio is dead quiet. My S6 noise level on 75/40 meters is now very pleasant on the ears. To you folks who say you don't need a balun on a dipole I'm not so sure about that, you may need to re-think your theory. As soon as I get off of this computer I'm calling Bob to order a new balun for my other dipole I have cut for 11.175 MHz that is noisy on my Yaesu receiver. As stated by other reviewers his construction is top rate. Hands down worth every penny. GIVE THESE BALUNS A TRY.
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