| Index | Thread | Archive | Jan-2001 | Archive | Send |
 |
  |
|
   |
|
  |
|
internally more complicated than what is commonly called a "current balun" in recent literature. Internally, a current balun is just a stack of ferrite chokes on a chunk of coax, which should be pretty problem free. If you want to buy the big cores, you can shrink them (shrink tubing, not shrinkable beads, hi) on your feedline and you are done. The 5KW F12 balun looks pretty sturdy from the outside, and I have used it at 3KW power levels on MARS frequencies for a year without problems. If you decide to use the F12 balun, my C-31XR didn't come with any balun attaching hardware, so we fabricated a mounting plate from some scrap aluminum and some U-bolts. If you're in a time crunch, you might start collecting that kind of hardware. Good luck. I think you'll like the antenna. Hank AA4HP >From: "Ted Pauck" <k8na@home.com> >To: <Force12Talk@qth.com> >Subject: [Force 12 Talk] C-31XR Balun ... de K8NA >Date: Wed, 10 Jan 2001 20:25:04 -0500 >X-Loop-Detect: 1 > >I will be ordering a C-31XR soon. > >In the data sheets on Page 11, it says "All that is needed is a 1:1 balun >(like the Force 12 B-1) or RF Choke". Has anyone used >an RF choke in place of the Force -12 B-1 Balun with FORCE 12 antennas? > >I have been making my own RF Chokes for monobanders for many >years, using Coax. It is a design originally published in Ham Radio >Magazine, by W6TC, March 1980. These RF Chokes are excellent, >and I never have had a problem. > >I have a KLM KT34-XA antenna with the KLM balun. >The balun died, and the beam is useless. It is on top of the >tower and on top of the mast. There are other antennas on >that mast also. It is such a big job to take >everything down, I figured I would replace the KT34-XA with the >C-31XR. But I am worried about using a commercial made >balun. I was told that the KLM balun would never be a problem. >Well, it is, and will cost me a lot of time and money to fix the >problem. I don't run super power, so that isn't the reason for >the balun going bad. > > > > >73/Good DX ... de Ted K8NA > > > >-------------------------------------------- >Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. >Force 12 Web site: http://www.qth.com/force12 > >Submissions: send to Force12Talk@qth.com >To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com >Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk >For problems with the list, contact n4zr@qth.com -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact n4zr@qth.com |
This Thread
|
This Author (Jan-2001)
|