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|What is an accepted range for a DX contact?||WN6WJN||on 17/4/14|
|For the HF bands (below 30 MHz), usually called "short wave", we have long-distance propagation thanks to bouncing signals off the ionosphere. On these frequencies, the usual idea of "DX" is contacting someone in another country. So US-Canada is "DX" by this measure, even if the distance can be very short. And Maine to California would not be DX.
ARRL has the concept of a "DXCC entity" and people try to contact as many of them as possible. They are generally countries, but some non-countries, like Alaska and Hawaii, are considered separate entities. Check out http://www.arrl.org/country-lists-prefixes.
73 Martin AA6E
|WiFi Remote Control||KF5ZXQ||on 15/4/14|
|The "Internet" is just a bunch of connected networks, and each one is like your own local wi-fi network. Any remote control system that works over the Internet is presumably using TCP/IP (or UDP) protocols that would work equally well on your local network. So that shouldn't be a problem. The easiest remote arrangement for the radio would be to get a radio that directly supports Ethernet remote operation - for control and audio in/out. But that's only part of the problem. You may need other functions for antenna switching, rotators, etc.|
|Distance two antennas should be apart||WV0L||on 13/4/14|
|The antennas will interact if they run parallel, but maybe not too badly. Spacing shouldn't matter very much. You may have to adjust the length of the 6M dipole to get it to resonate where you want. The interaction is much less if the wires are at right angles, and you would get an intermediate case with 45 degrees.
You could try just tying the 6M dipole across the existing G5RV feed point, making a fan dipole of sorts. The ladder-line matching section will probably be wrong for 6M, but it might still be worth a shot. It would save you the duplexer and additional coax.
This can all be modeled with EZ-NEC, if you want to get into that (fairly tricky) software.
73 Martin AA6E
|How do I tell QST editors an article is really bad!||WA6SAZ||on 8/4/14|
|The usual way to submit to QST is to mail firstname.lastname@example.org and/or check with www.arrl.org/qst.
The conversion from XP to Linux can be a good thing -- no new hardware, no cost. But a lot of folks will be put off if they can't port their favorite applications programs across.
|How do I tell QST editors an article is really bad!||WA6SAZ||on 18/3/14|
|I'm a Linux fan, too, but I thought the article was balanced and informative for the general XP-using readership. I would have pushed Linux a little more -- there are good reasons to consider it. But I realize that a lot of folks aren't interested in new computing adventures or rearranging their lives around a new operating system that (alas) is not main stream on the desktop.
As the author points out, the real problem for most XP users is whether to go with the tried and true Windows 7 or with the problematic new Windows 8.x. If you just go and buy a "Windows" computer now, it will likely be Win 8. In some ways, it's a re-run of the Win Vista experience, but this time with a touch interface that most hams probably don't want. :)
73 Martin AA6E