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1. Re: Topband: Fw: GAP VERTICAL QUESTION (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 12 Dec 2012 16:10:19 -0500
Well, Tom I operate from a small city lot, although I do have some tall trees! I've done OK on 160 and 80 with a 160 inverted L and full size 80m GP - both with elevated resonant radials. (The 160 ra
/archives//html/Topband/2012-12/msg00334.html (12,966 bytes)

2. Re: Topband: Fw: GAP VERTICAL QUESTION (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 12 Dec 2012 17:21:37 -0500
That's the paper I was referring to earlier. Really useful for 160m folks! Charlie, K4OTV --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of DAVID CUTHBERT Sent:
/archives//html/Topband/2012-12/msg00346.html (21,139 bytes)

3. Re: Topband: elevated radial question (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 12 Dec 2012 19:14:53 -0500
Hi, Grant! Well, sometimes we have to just "flower where we're planted" and what is IS! I actually think that an 85' high TEE with elevated radials will be an excellent 160 antenna for you!! Actually
/archives//html/Topband/2012-12/msg00347.html (10,617 bytes)

4. Re: Topband: Elevated Radials Questions (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Thu, 13 Dec 2012 17:53:05 -0500
HI, Grant! A couple of things to think of. First, as reported in the IEEE paper mentioned earlier, increasing the number of elevated radials to more than four , yields a rather limited benefit, This
/archives//html/Topband/2012-12/msg00363.html (13,466 bytes)

5. Re: Topband: Elevated Radials Questions (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Thu, 13 Dec 2012 23:59:05 -0500
Sounds like really effective approaches! I expect that the narrowing of the BW as you added radials was because the additional radials were reducing the losses of the system and therefore raising the
/archives//html/Topband/2012-12/msg00374.html (16,782 bytes)

6. Re: Topband: Optimal radial wire type and gauge? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Fri, 14 Dec 2012 09:03:54 -0500
Hi, Rick Well, 14 ga stranded wire should be fine for radials - although you might want to pre-stretch it. I have occasionally used smaller gauge wire - 16 gauge or even 18 gauge stranded with black
/archives//html/Topband/2012-12/msg00392.html (8,490 bytes)

7. Re: Topband: raised radials (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sat, 15 Dec 2012 08:45:34 -0500
Hi, Tom Well, I also used a 40m GP with 4 elevated resonant radials about 6' above ground and I worked an awful lot of really good DX with it!! I found it to be about equal to my half-wave vertical d
/archives//html/Topband/2012-12/msg00402.html (9,425 bytes)

8. Re: Topband: Optimal radial wire type and gauge? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sat, 15 Dec 2012 09:03:03 -0500
Well, Carl Your thoughts on radials are pretty much like mine! For those of us with limited space, another way to get the 130' elevated radials into limited space is to bend them. I've had really goo
/archives//html/Topband/2012-12/msg00403.html (10,883 bytes)

9. Re: Topband: Fw: GAP VERTICAL QUESTION (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sat, 15 Dec 2012 10:34:21 -0500
Wow, Dave! That sounds great!! Could you support a vertical 1/2 wave for 160 with a balloon? You could end -feed it at the base through a 1/4 wave of 450 ohm ladder line and it would be a FEARSOME 16
/archives//html/Topband/2012-12/msg00404.html (13,052 bytes)

10. Re: Topband: Strange Condx (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 16 Dec 2012 18:23:40 -0500
Hi, Herb! Well, it's easy to forget that receiving conditions can be quite different at different ends of the path! An hour before your sunset, it had been dark for a while western and central Europe
/archives//html/Topband/2012-12/msg00448.html (9,181 bytes)

11. Re: Topband: Optimal radial wire type and gauge? (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 16 Dec 2012 19:29:38 -0500
Well, I suspect that one can't get a complete picture of the correlation between base driving point impedance and radiated field intensity unless we could measure at a multiplicity of elevation angle
/archives//html/Topband/2012-12/msg00449.html (11,822 bytes)

12. Re: Topband: Strange Condx (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 16 Dec 2012 19:17:38 -0500
Hi, Herb! Yes - and sometimes the daytime noise level will be a bit lower on 160 and then pick up as the grey line and then darkness move over us! And I can sympathize with those Europeans - and bein
/archives//html/Topband/2012-12/msg00450.html (11,027 bytes)

13. Topband: KAZ Antenna (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 19 Dec 2012 12:21:19 -0500
Someone, named Charles, asked me if I could point him toward information on the"KAZ" antenna. I have lost, misplaced or accidentally deleted your e-mail. Please ask again, and I'll try to find some l
/archives//html/Topband/2012-12/msg00532.html (7,317 bytes)

14. Re: Topband: KLM antennas on shunt fed towers (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 26 Dec 2012 10:04:52 -0500
Good afternoon, Peter! Well, your comments make me even more suspicious that Ron's KLM balun has been damaged by common mode current, induced in his 10m coax by 160m tower current. Your 1/2 wave balu
/archives//html/Topband/2012-12/msg00589.html (9,322 bytes)

15. Re: Topband: Fw: Short Bogs (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 30 Dec 2012 16:55:16 -0500
Well. it's not really the "quality" of the insulation -it's its relative permittivity - relative to the permittivity of free-space (or a vacuum) The "dielectric loading" of having a layer of higher p
/archives//html/Topband/2012-12/msg00617.html (9,441 bytes)

16. Re: Topband: Fw: Short Bogs (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Sun, 30 Dec 2012 17:34:55 -0500
All true! NL7Y was referring to coated wire, though, which is certainly different than the velocity factor of coax propagating TEM waves. I didn't know that Cebik's site is still up. That's good to k
/archives//html/Topband/2012-12/msg00619.html (7,489 bytes)

17. Re: Topband: Heater Choke Value (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Thu, 10 Jan 2013 12:11:48 -0500
Hi, Mike Well, I would think that a reactance of perhaps 150-200 ohms at 160 ( if your conversion includes 160) would be sufficient. That should be sufficiently large relative to the tubes' input imp
/archives//html/Topband/2013-01/msg00067.html (8,715 bytes)

18. Re: Topband: Elevated Radials (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Tue, 5 Mar 2013 21:11:27 -0500
Hi. Richard I've been following this thread -mostly for entertainment. I've noted your postings re elevated radials to replace deteriorated buried radial fields under broadcast towers. I'm familiar w
/archives//html/Topband/2013-03/msg00039.html (12,959 bytes)

19. Re: Topband: ALUMANIZED STEEL (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 6 Mar 2013 10:40:43 -0500
Dunno, Mike I would think the aluminum would provide some significant corrosion resistance and some increase in conductivity. I would expect the aluminum coated steel to be more expensive, though. Si
/archives//html/Topband/2013-03/msg00044.html (7,901 bytes)

20. Re: Topband: Antenna terminations (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Wed, 13 Mar 2013 10:29:19 -0400
Same here, Frank I can't do Beverages on my city lot, but I do use carbon comps exposed to the weather in my terminated "KAZ" receiving loops, with no apparent detrimental effects after years in the
/archives//html/Topband/2013-03/msg00107.html (11,361 bytes)

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