Hans can take it off in a week. or I will .. set your egg timer going. If they had done massive revisions to it then I would not give a monkey's Ar$e about the IP aspect because the Highly revised boo

#antenna #qrp-dx

Oops. I did a whoopsie, and said it was published first in 2009. My bad, it was *2008*. No significant difference, but I know how people like to nit-pick at stuff like this. -=-=-=-=-=-=-=-=- 73, Gwen

#antenna #qrp-dx

Timothy, You don't know how copyrights work in the US. You don't need to have an explicit notice in your publication anymore. We're a signatory to the Berne Convention, and anything you put in tangibl

#antenna #qrp-dx

Copyright ? My brother looked for a note in the front of the book and could not find it. Anyway we have the same name. Tim1 and Tim2. I say Tim2 posted it. I tried to find the velocity of prop on a ve

#antenna #qrp-dx

For information on the Zepp, see sections 9.1.1.1.1 for the Zepp and 9.2.3 for the double-Zepp in the English edition of Rothammel’s Antenna Book (Krischke, DARC Verlag 2019). John F5VLF

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Complain all you want the only ones that can do that is ARRL the publisher. They can change it and you can't. That and it was written a few years back. Its old news. As to velocity or propagation on 4

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I'd still like to see it covered in the book. You can't leave good enough alone can you , Alison ? "The End fed zepp is nothing special " well it is something special c/with the Black magic and BS of

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The End fed zepp is nothing special and the "phasing section" is not. Its a quarter wave transformer to feed the high impedance end of the half wave wire (one leg). Performance save for feed point con

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Do a search in the group files for arrl. Jim... kq3s

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If you are already logged in a direct link should work;- https://groups.io/g/QRPLabs/files/ARRL%20Basic%20Antennas.pdf Alan

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It is there. Click the files tab and go to page 4. It is a pdf.

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If you mean the files section of this group, I don't see that document there. 73 de Arnie W8DU

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if you look the Files section of this site you will find ARRL Antenna Basics book. Ie. a basic introduction to RF engineering of Antennas and power delivery. Only on Hans site do you get such quality

#antenna #qrp-dx

Hi, Remember R10 is there for safety, i.e. if your aerial connection develop a short circuit, you may want to limit the current, most GPS aerials only draw 10’s of mA, so you can put in 50-100 Ohms, m

#gps #antenna

Thank you very much Andrew for your prompt reply. I think I'll try removing R10 and picking up 5V from the board. Thanks for helping me, really kind.. Best 73s

#gps #antenna

Hi As the RF module runs on 3V3, you are unlikely to get 5V out of it, There are GPS heads that will run on 3V3, you will need to move R10 and pick up the 5v supplied to the board, or make up a DC blo

#gps #antenna

I bought an external antenna for one of mine QLG1 module (I have 3). It is a cheao antenna found on Amazon. Actually I measure now 5V at the input from the QCX, but 2,5V at the SMA. My external antenn

#gps #antenna

Larry sorry it appeared I was shouting ( BTW that would have been all caps). I simply did a copy and paste from the manual and apparently it used the manual formatting. ;>)

#gps #antenna

Thank you for shouting :-) A friend of mine called me up a few minutes ago and asked the same question and I replied "what power wire". Need I go any further? I guess I just never read far enough thin

#gps #antenna

You will need to solder a wire from the lower end of L3, to the SMA centre connector.This arrangement suppliespower to the external antenna, from the RF Vcc supply output of the RF module. Note that i

#gps #antenna