ARRL

AA6E

Joined: Sat, Apr 4th 1998, 00:00 Roles: N/A Moderates: N/A

Latest Topics

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Forums demoted? Aug 18th 2013, 18:36 10 446 on 28/8/13
Why isn't there more action on ARRL forum? Sep 13th 2012, 00:48 11 2,490 on 29/1/13
Forum avatars? Aug 17th 2011, 16:45 5 1,292 on 21/8/11
Operating Furniture Aug 17th 2011, 01:52 10 2,839 on 27/12/12
Radiolocation News Jul 27th 2011, 01:52 3 1,510 on 28/7/11
General Comments Jul 24th 2011, 21:46 22 6,199 on 29/7/11

Latest Posts

Topic Author Posted On
WiFi Remote Control KF5ZXQ 1 day, 15 hours ago
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 KenWLeidner 4 days, 11 hours ago
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 1 week, 2 days ago
The usual way to submit to QST is to mail qst@arrl.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.

73
Martin AA6E
How do I tell QST editors an article is really bad! WA6SAZ 4 weeks, 2 days ago
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
Remote Antenna KZ6B on 17/3/14
Depending on exactly what you want to do, things can get complicated and/or expensive fast. The simplest remote, if you can do it, is to use your WiFi network, maybe with directive yagi antennas to get the distance you need. Then you could work with a rig that offers remote capability via Ethernet. I think the Ten-Tec Omni VII and the Elecraft K3 offer this, for example. You control your rig from your home computer. If you need rotator control and more complicated switching, this can be done. There are commercial systems that support this if you don't roll your own.

If you are willing to run a computer at your remote site, you could use software like Hamlib to control your rig. (Hamlib supports many different types of rigs.) You would still need to provide two-way audio, which could be through the computer or through a VHF/UHF audio link.

Running over a UHF link can be similar to Ethernet, but the digital networking is not a standard product so far as I know. (One exception: the high-end forms of D-STAR.) Running audio on UHF with DTMF-style commands is not too hard. It's basically how many repeaters are controlled. There is also the Kenwood Sky-Command system that you might look at.

Good luck & 73 - Martin - AA6E

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