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| Name & Callsign |
Comments |
| 199) |
9a7pjt  |
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Location:
Croatia |
  
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 Wednesday, 16 May 2012 17:58
Hy John,
nice site.
One question. Can I put your Slim Jim antenna calculator on my website?
PSE let me know . . .
TNX & 73 9A7PJT
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| 198) |
SV0XBU - Ellis |
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Location:
Athens, Greece |
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Friday, 4 May 2012 16:33
Hi,
Many thanks for the HM-31, dynamic to electret mic conversion. I followed your instructions and all is working: just need a few QSOs to ensure all is well.
Its hooked up to an FT-2000 and I have always liked the much smoother audio reproduction from an electret as opposed to dynamic-type mics
73
Ellis
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| 197) |
Jon Sparkes G0SDT |
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Location:
Cornwall UK |
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Friday, 20 April 2012 10:38
Many thanks for the very handy printable log sheets. Will come in handy for those of us keeping paper logs over the IMD w/end.
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| 196) |
Andrew LentonG8UUG |
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Location:
Fleet |
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Thursday, 19 April 2012 19:40
Hi I have tried your MFJ mod, wrapped 43 turns on a T130 2 core (1.2mm wire), measured 20uH now in series as shown. Thnes a 160 M doublet on top band with ease. It should now also tune a shorter aerial I will let you know best 73 Andrew
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| 195) |
John G4RDC |
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Location:
Reading IO91MK |
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Saturday, 10 March 2012 13:44
made a slim jim from 450 ohm ladder line to calculated dimensions - works great!
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| 194) |
Fred Puccetti |
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Location:
Toledo OH. |
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Thursday, 1 March 2012 16:38
Greetings
I viewed your youtube video on the microwave transformer melting a nail.
I want to make a 220V 13-15Amp output
version of this can you direct me ?
What is the circuit that drives the transformer? and your input power ?
please help
Thank you ,
Fred
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| 193) |
Chris G4LDS |
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Location:
Morecambe |
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Monday, 27 February 2012 12:10
Great site, Hows the Amp project? Would like to see more updates & the circuits used.
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| 192) |
Ron McCafferty Ve3Lvv |
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Location:
St.Catharines, Ontario, CANADA |
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Friday, 24 February 2012 19:55
Nice site, good info available!
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| 191) |
Aca, YU1NNN |
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Location:
jn94ur |
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Friday, 10 February 2012 22:08
Great job, good site, helped me a lot. 
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| 190) |
Ebbe oz5es |
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Location:
jo45vn |
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Friday, 3 February 2012 11:34
Hello John.
Very nice site, and some great ideas.
I have a J-pole for 4 metres, but will make a Slim Jim instead to get that extra gain.
Also Your MH-31 tip will be the next small project here.
Please keep up the good work
All the best, oz5es Ebbe
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| 189) |
vu3kod |
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Location:
india |
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Wednesday, 25 January 2012 11:17
hi John, vy gud site I ever seen. I like ur 1:1 Balun. I made one works fine. Hpe to catbh u on air.
73. Nik.
Vu3kod.
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| 188) |
KE6ZUZ |
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Location:
EL98jp |
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Sunday, 8 January 2012 01:29
Where are the details of the 572B HF Linear Amplifier?
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| 187) |
Michael J Talkington |
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Location:
Lost Creek, WV USA |
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Wednesday, 28 December 2011 21:08
I am building the 9:1 balun fron your webpage for my K9AY loop thanks for the balun info 73 de Mike N8FWD
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| 186) |
K2QB |
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Location:
Niagara Falls. NY |
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Thursday, 17 November 2011 12:40
Great site John. Gives me a few ideas for mine when I finally get around to building it. Very interedt in your UnUn 9:1 balun. What is the power handling capability ot it using that core and wire?
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| 185) |
Jim G4YEO |
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Location:
Denham, London |
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Wednesday, 16 November 2011 17:36
Nice web site, hope you dont mind if i put a link to it on my web site. Probably just a few students coming for a look.
73s from Jim
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| 184) |
John G7HIA |
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Location:
Devon |
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Monday, 14 November 2011 22:38
Nice one on the slim jim. Building one for receiving satellites on 2m
73 John g7hia
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| 183) |
RLPendergaast N5JYW |
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Location:
Wisconsin, USA |
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Tuesday, 8 November 2011 04:18
I like your site.
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| 182) |
Michael EI9HS |
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Location:
Dublin, Ireland |
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Saturday, 5 November 2011 05:40
Hi John, Great work on your website and thanks for making the info and calculators available. One thing which I believe you should do... Nowhere in your calculator or discussion of the Slim Jim do you mention G2BCX, Fred Judd, SK whose invention this is. It is traditional in radio to associate the design with the inventor and it would be nice to have the articles refer to the '2BCX Slim Jim'. My 2cents.
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Friday, 4 November 2011 20:40
Program for designing and printing the completed QSL-cards and labels. Printing directly from the print queue HRD Logbook, AALog, UR5EQF Log, ADIF-files. [ www.radiosoft.info]
I would be grateful if you put information on its website.
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| 180) |
Stephen adams K4STA/G0OMM |
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Location:
Lawrenceville GA |
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Sunday, 23 October 2011 22:40
Hello John,
Ex Brit Pat here from South London (Peckham) UK call G0OMM but now living in the USA in a city called Lawreceville Georgia South East part of the country. Now back in the hobby with the UK call of K4STA. 73 John De Steve K4STA/G0OMM
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| 179) |
Nick Scott G0FDM |
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Location:
IO93ne |
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Monday, 10 October 2011 22:52
Just built the Slim Jim for 4m and wanted to thank you for the excellent Slim Jim Antenna Calculator. Made it out of 13mm copper pipe and following your measurements within the mm the SWR was 1.5 acroos the band. Two small adjustments and its under 1.2.
Not sure how its working yet as 4m is a bit dead but always impressed with this design.
Nick
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| 178) |
VU3BEP |
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Location:
Mangalore |
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Wednesday, 28 September 2011 07:31
Despite i am not on the band these days, got to saw your page while browsing for inverter circuits. Superb and informative page with live updates of your staus. Hats off to you who is so innovative and enthusiastic. A rare gem of hams.
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| 177) |
Noz:5B4AIX |
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Location:
Paphos Cyprus |
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Tuesday, 27 September 2011 21:03
Very nice site, with useful information...will look out for John...73's
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Wednesday, 7 September 2011 18:23
Did your mic. mod on the FT-817 .
Works great ! i used a 560 nF for 1uF sounds to brown HI
TNX
vy 73
John PD7MAA
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| 175) |
JOHN GW0GIH |
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Location:
BRECON POWYS UK |
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Monday, 5 September 2011 19:55
LOOKING FORWARD TO HEARING FROM YOU OUT THYERE.73
JOHN 
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