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Author Topic: Good Carolina windom that hanles full legal output  (Read 638 times)
WX7G
Member

Posts: 6136




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« Reply #15 on: November 19, 2009, 03:29:16 PM »

JOHN,

here is an OCF dipole that works on 160, 80, and 40 meters. This is modeled at a height of 35' over 'average' GND.

270' dipole fed 95' from one end. Feed it thru a DX Engineering DXE-BAL050-H11-C 1:1 current Balun.

The impedance at the dipole terminals is:
1.8  MHz   52 ohms
3.55 MHz  106 ohms
7.20 MHz  146 ohms

The VSWR is low enough to feed with RG-213 (50 ohm) or RG-11 (75 ohm) coax directly into your 1500 W unbalanced tuner.

Looking at the balun spec of 5 kW continuous power we can infer a new spec for a 150 ohm load. This assumes that heating of the ferrite core is the limiting factor. At 5000 W the balun sees 500 volts across the ferrite common-mode inductor. But you will run 1500 W into a 150 ohm load. The ferrite now sees 474 V. The flux swing in the core will be about what it is specified for.

This antenna can handle 1500 W continuous power.
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W4MLO
Member

Posts: 30




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« Reply #16 on: November 20, 2009, 05:56:02 PM »

Hello,
I own the Radio Works Carolina Windom 160. While I do not run legal limit, I do run 1.2 kW pep. I have found that the windom is generally a decent wire, IF INSTALLED ABOVE 50'(which is difficult due to the weight). On a whim, at Lindy's advice I built a 135' ladderline fed doublet intended for field day use. I always build everything anticipating the day when I can afford legal limit so it was built from #14 copper clad steel wire and fed w/ #14 450 ohm copper clad steel ladder line. I was so impressed w/ this antenna that I put it up at home about 10' lower than the windom w/ 60' seperation, I NEVER USE THE WINDOM! It has roughly 2 S units less noise, has a wider bandwith(without re-tuning) and cost about $95 less using premium components.

If you want the RW CW-160, I will sell you mine for $75.


Thanks Lindy!!!!!

73 W4MLO Mllo
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