I use my KX3 just like this - see answers below:
> On Apr 23, 2014, at 9:04 PM, "Johnny Siu" <[email protected]> wrote: > > Hello elecrafters, > > It is off topic and you may wish to press 'del' button now. > > Local ham clubs together with some hams in the China Mainland are going to do > some drilling in ARES within the Pearl River Delta area (with a radius of > about 50km). NVIS could be one of the operation to trial run for ARES. My > questions are: > > 1. Is the power output say 10w from KX3 good enough for such purpose under > SSB? We don't want CW which requires training operators. Phone mode can be > operated by anyone with minimal guidance (a simulation under emergency). Yes - in fact it works quite well at only the 5w limit using the internal batteries. You will need external power to get 10w output. > 2. During day time, is 40m a proper band to use (no 60m band in ITU Region > 3)? If yes, what will be usually frequencies used such proposes? 40m during the day, 80m at night. > 3. I am going to use Buddipole for the NVIS antenna. Did you go good > results for similar operation in the past? There are better - and cheaper - ways to go for NVIS. Go to DX Engineering's webpage and look for their "paper" on an NVIS antenna to build. A quick websearch will also turn up similar plans. These are all based on the US military's NVIS antenna system. You do not need the "special" parts DX offers, although I did get wire from them. The antenna system is a crossed inverted V with the apex being 15ft high, the wires and rope (I used 550 paracord) are the guy-lines. Instead of a long coax for the feedline I used 300ohm ladder, but that can be a pain as you need to keep it off the ground. It does keep the weight down when packing though. For at home, I will be switching to coax. I also use an Elecraft BL2 balun (set to 1:1) at the KX3 before the feedline. (After the switch to coax, I will be using the balun set to 4:1 at the feedpoint.) From what I've read, a balun isn't required, just recommended. I also have the internal tuner option - very important. I have used the above antenna on 20m also, and have made contact with Denver (I'm in southern AZ), a distance of about 650miles on 10w. 73, Jeff - KG7HDZ > Looking forward to your advice and thanks in advance. Please reply > off-the-list so as to save the bandwidth here. > > 73 > > Johnny VR2XMC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
