Date: Mon, 20 Aug 2012 13:54:36 -0400 (Eastern Daylight Time)
I've recently moved to north-central Florida and want to get a couple of multi-band antennas going this fall. The plan is to install a 43-foot vertical and a 135-foot doublet fed with ladder line. In
I can't get rid of the wired network. wireless isn't fast enough for large file transfers and I do a lot of photography with typically 8 to 10 terabytes on each of 4 computers. Unfortunately even a
David, I've seen those sources. None of those pre-made cabes are suitable for use in buried conduit. That's a wet location, and direct-bury cable is required. There are literally hundreds of sources
Those are unterminated cables. Bulk unterminated FO cable is easy to obtain, no argument. Its the terminations that seem to be problematic. I know one can purchase preterminated FO cable for indoor u
they clearly make preterminated outdoor suitable cables, because that's what the Verizon FIoS guys use when doing installs. I'd have thought that Verizon could afford to terminate on site. Or at leas
The discussion about protecting networked computers is of interest to me because I have been thinking about an application here. I thought I'd start a new thread about my particular situation to see
If you go to the big box store for 4-inch S&D pipe, be sure to look at the markings. If it is ASTM-D2729 or SDR-35, it is not a so-called "IPS" compatible pipe. Make sure you get compatible fittings!
OK, I'm sure this is all confusing to the OP. I know it was for me until I dug into it a bit. I am using PVC for a wood shop application, and I needed large diameter and light weight. Schedule 40 wou
David did point to one on-line shop that does, which I missed. They don't give pricing on line, but claim a good selection and even offer to install a pull eye. I'll have to call them. For those that
Second, twisted pair provides FAR greater immunity from RFI or noise coupling that parallel conductors, and most pre-made cables use parallel conductors. CAT5/6/7 is EXCELLENT twisted pair. 73, Jim K
I'm looking for a recommendation for a PE in the Gainesville, FL area to advise me on a tower install. I am specifically interested in understanding how the soil composition at my location might alte
I received similar email. I didn't bother to look at the images (I use a text based MUA and viewing images isn't automatic). I think someone is just harvesting email addresses from the list and gener
Date: Tue, 20 May 2014 09:18:45 -0400 (Eastern Daylight Time)
Mark Allen of Rohn presented at Hamvention this past weekend on the topic of tower safety and maintenance. One of the issues raised in his presentation is that of guy anchor corrosion due to soil con
I want to build a matching network for a 53-foot vertical for 80/75 and 40. I should be able to cover 80/75 with three LC pairs and 40 with a single pair. So a set of fixed inductors and capacitors w
Thanks Jim. The CDE 942 series starts at .01uF so not suitable. But I'll look at other PP dielectric types. -- Art Greenberg art@artg.tv _______________________________________________ ______________
I have a Jennings UCS-500. I'd rather use it for something else, but I agree its suitable. Coil inductances range from about 3uH to 6uH. Air wound is appropriate as dissipation in the coil will be ar
Grant, A very interesting setup on that vertical! I'm extending an existing 43-foot vertical to get a marginally better and easier to feed antenna for 80/75 while still being suitable for 40m, which
Thanks for the pointer. -- Art Greenberg WA2LLN art@artg.tv _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting
Oops. Parallel. Series won't do it ... -- Art Greenberg WA2LLN art@artg.tv _______________________________________________ _______________________________________________ TowerTalk mailing list Tower
Nice work, Doug. Yep, it would be nice to be able to fine tune. I don't have air variables in my junk box. I'll see what I can find. Thanks! -- Art Greenberg WA2LLN art@artg.tv ______________________