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The goal was simple: Using the autotuner, tune the most number of bands with the highest efficiency on a doublet antenna. Getting the highest efficiency mandates the use of ladder line because SWR loss can be very high using coax on multiband antennas.

"This page is all about Where the energy really goes in an antenna system. Will a high SWR blow up my transmitter? ( No, it will not, but POOR TUNING can.) ---The Reflection Section--- The purpose of this section is to explain what happens when un-used energy comes back down the coax from the antenna. "

Here are some simple truths that you probably knew before you got here, but when they are all put together, you will have 7 different things happening.

"A good rule of thumb is length in feet must equal 1.25 times the band in meters. The result is the minimum dipole length you can use without using a good matching system in, at, or near the antenna!"

LDG instruction book for Z-11 Pro antenna tuner

practical construction of vertical mast antennas, including tuning coils, from available materials. Good instructions for building nice looking coils from scratch.

КВ и УКВ антенны

HF, VHF and UHF antennas

HackSat One is a tiny self-contained satellite sprite. The hardware design is set as part of the KickSat project. It consists of a 35 x 35 mm circuit board with an MSP430 microcontroller, solar panel, magnetometer, gyroscope, oscillator and dual antennas. The board weighs about 5 grams

"When considering the effects of feedlines it should pointed out that it is often not appreciated that a coax cable is really three conductors at RF. The three are: 1. the outside surface of the inner conductor, 2. the inside surface of the outer conductor, 3. the outside surface of the outer conductor. The outer conductor of the coax is just as much a "wire" as any other wire in the system. It is not necessary, however, to model the inner conductor and the inner surface of the outer conductor. So the coax is just modeled as another wire. "

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From the very beginning the goal at Stryker Amateur Radio has always been to produce the best-performing two-way 10 meter radios and provide them to the consumer at competitive prices. Our industry filled with outdated products that perform poorly. We are committed to using state of the art circuit design and manufacturing, to produce a superior radio.

Where to Buy The Stryker SR-955HPC 10 meter radio just keeps getting better. Released back in 2012, it set the bar high enough that competitors are still trying to "catch up". Rather than sit back and relax Stryker has continued to refine the design to maximize performance and dependability.