トップ > 運営・自治関係 > 質問フォーラム ( 前のトピック | 次のトピック )

Reaching New Heights with Telescoping Masts for Ham Radio Operations

このフォーラムに新しいトピックを立てることはできません
このフォーラムではゲスト投稿が禁止されています

ツリー構造順で表示投稿の新しいものから

Reaching New Heights with Telescoping Masts for Ham Radio Operations

msg# 1

前の投稿 - 次の投稿 | 親投稿 - 子投稿.1 .2 .3 .4 .5 .6 .7 | 投稿日時 2023-4-1 16:38

xysoom

投稿数: 2039

Reaching New Heights with Telescoping Masts for Ham Radio Operations

The telescopic antenna mast is popular with many hams. It’s simple to install and reasonably inexpensive to purchase, offering an alternative to a tower for supporting a modest antenna.Get more news about telescoping mast,you can vist our website!

A telescoping mast consists of multiple sections. You start with it in an easy-to-handle collapsed state. Once you’re ready for setup, you pull out the sections until you reach the desired height for your mast. Their flexible height options are a handy feature for ham radio operation.

Supporting the telescoping mast is done by connecting guys to the guy rings and clamps, and the other end to ground stakes or some other stable anchor. A base is helpful for keeping the pole anchored and from slipping to the side. If installed beside a structure, additional support can be provided by standoff brackets with U-bolts.

A variety of telescoping galvanized steel, fiberglass, aluminum, and carbon fiber support poles can be used as dependable and durable masts. They cover the range from permanent to temporary, as well as backpack-portable. Extended lengths start at about 14 feet and max out at 50 feet.

Fiberglass
There are four basic types of fiberglass poles. Each serves a slightly different purpose, although in some cases they may overlap:

Lightweight, telescoping fiberglass poles: These are often known as kite poles, with some specifically made for portable ham radio use. When collapsed, they’re very short and easy to transport. They’re best suited for vertical antennas, inverted-L antennas, lightweight dipole antennas, slopers, and lightweight loops. Examples of these lightweight poles include the SOTAbeams Tactical 7000HDS and MFJ 1916.

Light-duty fiberglass poles: Light-duty poles are generally used for low heights and lightweight antennas, such as dipoles and simple VHF/UHF antennas.
Thick wall (HD) telescoping fiberglass poles: Thick walls allow for increased strength and height as well as more flexibility with antenna options. As the name implies, the walls of the individual tubes are much thicker than those used for light-duty telescoping fiberglass poles. Thick wall models include the DX Engineering DXE-TFK46-HD and MFJ-1908HD.

Stackable fiberglass poles: You’ve probably seen these at hamfests. They’re typically 4-foot military surplus tent poles which slide into each other by end couplers.
Carbon Fiber
Carbon fiber telescoping poles have the strength of steel with the weight of aluminum and are a highly versatile choice for a variety of applications. About 90% of the carbon fiber is made from Polyacrylonitrile (PAN) and the remaining 10% is made from rayon or petroleum pitch.

A carbon fiber pole is not as good of a conductor as most metals but can conduct electricity to some extent. It won’t affect dipole, sloper, and inverted-V wire antennas but could have an effect on resonance if used to support a wire vertical/inverted-L antenna. The same is true of steel/aluminum poles. The SOTAbeams Carbon 6 Mast and DXE-TCFP-49 Mast are two examples of carbon fiber poles available at DX Engineering.

投票数:0 平均点:0.00