![]() Yes, your local (1000 mile) contacts will be very quiet, but also great for nulling out your close contacts as you reach your real DX. Made superb S9++ contacts all over the world with what is now a 3/4 wave vertical (just a teeny bit longer than a 5/8th) and contrary to popular belief, a 3/4 wave isn’t actually much of a cloud warmer after all, there will be some very useful low-angle gain on 15m. In my practical experience, you’ll find the third harmonic will be a little higher, probably 21.3Mhz. If you need extremely MASSIVE strength, you may be interested to know that a 6m aluminium scaffold tube with a sailboard mast sleeved on top gives a very strong 10m support.ĭid you know that verticals resonate on the third harmonic too, so a vertical resonant on 7Mhz will resonate at 21Mhz. To get any appreciable gain with extra height, you’ll be looking at 15m (or more) height. Remember that for 30m and below, an antenna 5m or so above ground will be absolutely fine. Just remember to remove the last three sections (or if it’s a heavy wire antenna, maybe the last 4 or 5 sections). The added severe weight means it’s not practical. It will eventually snap under extreme tension. PLEASE don’t fit a large wire antenna to the very top. For G5s, Doublets and Dipoles removing the last three or four sections and achieve a very good vertical non-metallic support at about 7m height. They may give you a 50 ohm, low SWR match but so does a resistor.Ĭustomers have made 2-element yagis (awesome), rotatable dipoles and G5RV supports etc. The top section is a solid section (not hollow) which is nearly impossible to break and has a tiny metal loop for aerial mounting options, for instance to loop the top of an inverted L though.ĭon’t confuse these heavy duty flag pole antennas with cheap fishing pole copies that snap in the wind and sold as “professional” and sorted antennas. We also do various ground plates, and guy plates to suit. I have built these both free-standing by using an internal sleeved 44mm tube concreted to the ground as well as guying them at just above the first section. The inside diameter of this “10m” pole is 44.5mm (1 3/4 inch) which means you can internally sleeve an aluminium or fibreglass tube inside the base of the pole to give you lots of options for mounting. The base unscrews which will let you push the redundant bits back out the bottom. If you need less height, just remove the appropriate number of sections off the top. They telescope to between 9.2m and 9.4m in length (sometimes a less depending on factory manufacturing tolerance) and weigh 1.4 kilos. These poles come packaged brand new, 1.2m length with a protective plastic see-through snap-top temporary dispatch bag. These are the best selling heavy duty telescopic antenna support on the market. The original DX Commander Classic Telescopic Pole. ![]()
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