Welcome. I passed my Foundation exam and got the callsign M3UKD on 4th Jan 2007. After operating as a Foundation Licencee for six months, I then took the Intermediate exam and passed in June 2007, and got the call 2EØUKD. I then took the advanced exam on 10th December 2007, and got the results on the 21st. Fortunately, I passed, and got the callsign MØUKD on 21st December 2007. I run an Icom IC-7400 from home, on 2m, and HF. Antennas are a Diamond X-300 mounted about 11 metres above ground for VHF/UHF, and a homemade carolina windom outside on HF. I also run 2 metres mobile with a Yaesu FT-2200, and portable with a Yaesu VX-7R, IC-706MKIIG or an FT-817ND. Thanks for visiting! John.
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| Name & Callsign |
Comments |
| 112) |
Tri Handoko  |
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Location:
Jakarta, Indonesia |
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 Tuesday, 9 March 2010 08:44
I am newbie, I try to make 1900mhz antenna for CDMA phonecell as in my homeplace the signal is very weak. Thank you for giving me chance to read your good website.
Best regards Tri
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| 111) |
M6ATD |
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Location:
Oxford |
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Saturday, 6 March 2010 14:04
Hi, I have just had a look to your web because i was looking information about a balun 1:1 for a 20 meters dipole
Congratulations
Ernesto
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| 110) |
Bill Blackburn Jr w4zlu  |
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Location:
Decatur, Al USA |
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Saturday, 6 March 2010 02:18
Excellent and very educational site, enjoyed very much browsing it. 
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| 109) |
Edgar 11-meter operator. |
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Location:
Mexico |
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Monday, 1 March 2010 04:11
Excelent information,I`m building a balun for RX the 160 meter band.And your 9.1 is the most easy to understand of all I found in the WEB.
73s from Mexico
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| 108) |
Al. GM1SXX |
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Location:
Paisley. Renfrewshire |
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Friday, 12 February 2010 15:49
Very nice website with interesting and practical stuff for the radio amateur.
Good work.
Wish mine was as tidy!
73 Al.
GM1SXX
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| 107) |
Sai, VU2SGW |
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Location:
Thane, Maharashtra, India |
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Tuesday, 9 February 2010 01:42
Nice info on each and everything. Will be trying slim jim antenna from your web page.
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| 106) |
João Costa, CT1FBF |
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Location:
Almada, Portugal |
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Thursday, 21 January 2010 01:11
Very important site with much useful information, first-class job. The calcularts is great, the best you can find in Internet to J-pole and Slim Jim antennas, direct to my favorits.
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| 105) |
Daniel DL1OFC |
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Location:
JO52HR Germany |
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Tuesday, 19 January 2010 19:02
Hello, nice Homepage... 73 from Germany de Daniel DL1OFC
[ www.dl1ofc.de]
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| 104) |
GIORGOS MICHALAKAKIS |
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Location:
LARISSA KM19EP |
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Saturday, 16 January 2010 13:34
SLIM JIM
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| 103) |
steve /AA0NO |
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Location:
palm harbor Florida |
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Tuesday, 12 January 2010 22:45
I really like your site & thanks for great reference info 
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| 102) |
John M3UIP |
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Location:
Grimsby. N.E.Lincolnshire |
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Wednesday, 6 January 2010 07:22
Really enjoyed ur site, when this white stuff disappears i shall be looking thro' the box to make the Caroliner Windom many thanks for all the info on ur site.. good dx and Best 73
Happy New Year 2010
John
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| 101) |
David Turney M0DKN |
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Location:
Smarden, Kent |
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Monday, 4 January 2010 10:39
Great site - interesting, informative , enjoyable.
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| 100) |
Germany Sylt |
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Location:
Westerland |
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Tuesday, 29 December 2009 20:34
Ein Kompliment für diese tolle Seite.
Eigentlich bin ich durch Zufall darauf gestoßen und dachte mir,
einen netten Eintrag und viele Grüße zu hinterlassen.
_____ \\\!!!///____
______( ô ô )_____
___ooO-(_)-Ooo___
Vielleicht schauen sie mal auf meiner Homepage vorbei!
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| 99) |
Eric..G4JZR |
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Location:
Nr Chester |
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Wednesday, 23 December 2009 13:58
Hi made up the 9-1 balun (unun) all went well except for 40m - 80m. 7.100mhz 2.8-1
R 28ohms...3.700mhz 7-1 R 3....MFJ analyzer. Any thoughts as to what went wrong!!. Thanks for a great site, 73 Eric G4JZR.
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| 98) |
Steve M0ZEH |
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Wednesday, 16 December 2009 15:53
nice experiments youve done, found your site by chance looking for 1:1 balun.
73
Steve
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| 97) |
Jaime Ortiz KB7ZJF |
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Location:
San Manuel, Arizona |
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Wednesday, 16 December 2009 03:47
Your website is awesome my friend..Keep up the good work. 73's
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| 96) |
FRANCIS |
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Location:
phillipines |
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Tuesday, 15 December 2009 14:27
CAN YOU HELP ME ON SLIM JIM?
THEY HEAR ME WELL BUT I COULDNT HEAR THEM IM USING IC2GAT AND THE OTHER IS SAME BUT WITH 4 INVERTED J'S
IC-32/WILLYWILLY FROM ICON 7 INC CEBU CITY PHIL.
73'S
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| 95) |
tono |
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Location:
indonesia |
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Monday, 14 December 2009 13:22
slim-jim, it's okay.....................
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| 94) |
joe ve3abg |
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Location:
Lowbanks, ON. |
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Thursday, 10 December 2009 21:48
Nice webpage John, will be visiting often
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| 93) |
Derek G4WXN |
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Location:
Suffolk |
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Sunday, 6 December 2009 16:00
I have now used your slimjim calculator twice, once for 2 metres and once for 4 metres, very useful data.
perhaps one small point, I have found the feed point to be much higher up the matching section than your calculator suggests, in both cases about 60% more. In the case of 2m, the calculator suggests 10cm from the bottom of the antenna, mine ended up at 16cm, having said that the SWR was flat all across 2m. The 4m Slimjim was also significantly different, around 60%.
Please do not see this as criticism, just hopefully useful feedback.
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| 92) |
Keith Dunn G1NDK |
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Location:
Staplehurst, Kent |
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Friday, 13 November 2009 11:38
Look forward to chat ??
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| 91) |
Karl KC9QLX |
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Location:
Illinois |
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Tuesday, 3 November 2009 04:07
Just used a slim-jim design similar to the one on your site (I didn't find this site until after I built it). I mostly use 146-147 MHz frequencies, and I got it tuned to very close to 1:1 (less then 1.1:1, which is as good as my meter can read) for those frequencies. The only major difference on my slim jim is the gap size (which makes the "B" section (1/2 wave) short by ~0.2 inches; the A (3/4) and C (1/4) sections are almost exactly the length you have on your site).
I'm not even close to an expert on wave theory (I got my tech 2 months ago and my general last month) - is the 1/2 wave section/gap size not as critical as the "j-pole" sections? Also, my feed point had to be significantly higher than calculated (about 6" from the bottom).
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| 90) |
John |
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Location:
jo33na |
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Friday, 30 October 2009 20:23
Hy, OM, I find the SlimJim calcuator via Google, and so your very nice homepage, whit interresting homebrew projeckts.
Also your VHF Lineair, nice !!! I will try
to build this Amp.
So, 73, and maybe we meet us on HF, 3.630 LSB.
Bye, Bye.
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| 89) |
Skip Coombe |
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Location:
North Carolina, USA |
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Monday, 26 October 2009 19:55
Nice site
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| 88) |
John Marthens, NU6A |
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Location:
Normandy Park, Washington |
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Tuesday, 20 October 2009 23:01
With your pictures and information I am going to building a duplicate (I think) of your Carolina Windom. Came lose to spending unnecessary funds for a commercial item. I have a couple of questions for you:
1. How do you keep the far end PVC (?) plastic mast pipe from bending, what with the stress of the antenna upon the end support?
2. I am not an expert on Carolina Windoms, but I presume that the ratio you have used for your 40 ft (13 mtr version) would remain the same. Please confirm.
And, #3, as someone else asked, would you provide more specific information on the balun(s) you used in your antenna system?
73, John/NU6A
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