Loading/Matching Coils

The EZ-Slider from Amratek Products is a dual-use coil that functions as
either a variable inductance loading coil or a matching network.

There are two models of EZ-Slider coils available — one for the 80 meter
band and one for the 30 and 40 meter bands.

The 3/8" x 24 male connector on the bottom of the EZ-Slider can be
threaded into most antenna tripods.

The variable inductance system is contactless,
meaning no coil turns are shorted. Shorting coil turns introduces power losses
into the system.

The EZ-Slider also features a laser-engraved scale, allowing you
to easily return to your preferred frequencies. Once you have tuned the coil
for the lowest SWR on a given frequency, you can either note the slider’s
position on the scale or make a small mark on the coil with a permanent marker.

EZ-Slider Operating Instructions

The EZ-Slider coils from Amratek Products work with most stinger (whips) that are approximately 17 feet / 5.2 meters in length on the 30, 40, and 80 meter bands.

This provides for a compact, portable antenna that can be used for Emergency communications, Field Day, Parks on the air (POTA), Summits on the air (SOTA), Volunteers on the air (VOTA), Islands on the air (IOTA), Travel, and Camping.

Where the rules of a Home Owners Association (HOA) don't allow for antennas, our products can act as a stealth antenna on a balcony or deck because of their low visibility (especially at night).

EZ-Slider Instruction Manual PDF

The EZ-Slider coils are unique in that they can be used in 2 different ways:

-They can be used as a normal base loading coil

or

-They can be connected as a matching network that can achieve an even lower SWR for rigs that don't have an antenna tuner

EZ-Slider Instruction Manual PDF

In either way of operation, the EZ-Slider coils benefit from a high efficiency design featuring:

-Low resistance copper coils (no high resistance stainless steel wire)

-No sliding contacts to wear out

-No shorted turn at the contact point (A shorted turn in a coil causes a high circulating current in the shorted turn which creates losses and generates heat)

-Calibration scale (a high resolution scale is laser etched into each coil for repeatability of setup for various frequencies)

-Weather proof (All hardware is stainless steel)

As a result of this low loss design, these coils can handle 100 Watts data, 200 Watts CW, and 300 Watts SSB.

EZ-Slider Instruction Manual PDF

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