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49:1 Balancer Shortwave Quad Band End-fed Half Wave Antenna for Amateur Radio

<ul><li>【 BALUN FOR ANTENNAS】 The 491 balun is tailored for end-fed antennas, requiring only a standard 20-meter long vibrator to resonate effectively in four amateur bands (7, 14, 21, and 28 MHz). Achieve optimal performance with little from height changes.</li><li>【RELIABLE STABILITY】 Featuring a uniquely designed magnetic ring and an extended M seat, this balun s stable operation over time. The PCB-fixed design enhances durability for prolonged use.</li><li>【DIY FRIENDLY】 for those with some technical skills; you can easily create your own 20-meter long vibrator to enhance your radio setup. A great project for hobbyists!</li><li>【EFFICIENT SIGNAL TRANSMISSION】 With impressive parameters like a standing wave ratio under 5 and insertion loss below 1.5DB, this balun guarantees efficient signal transmission during operations.</li><li>【ROBUST POWER CAPACITY】 Designed to handle up to 100W PEP (SSB), this balun has undergone extensive testing to it meets rigorous operational demands without compromise.</li></ul>

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Features:This balun is a 49:1 balun dedicated to end-fed antennas. It only needs to be equipped with a 20-meter-long vibrator (remember that it is a standard 20-meter) to resonate naturally in the four amateur bands of 7, 14, 21, and 28, and the height change has little effect on the resonance point. It is very suitable for HAMs with certain hands-on skills (you can make a 20-meter-long vibrator yourself). The magnetic ring is a specially magnetic ring, and the M seat is also&nbsp; and extended (the short M seat is still loose when the M male head is screwed to the bottom). The magnetic ring is fixed with PCB and works stably and reliably for a long time.Main parameters: 5-35MHZ, standing wave less than 1.5, insertion loss less than 1.5DB, withstand power 100W PEP (SSB) (the baluns have passed the 30-minute continuous transmission test safely, and the parameters are all real and we will never consider marking it as 150W).Note: The advantage of end-fed balun is that its bandwidth and gain are both NO:~~1 in natural resonant antennas. The disadvantage is that its loss is greater than that of conventional baluns. Therefore, end-fed baluns cannot be used continuously for a long time. The withstand power is 100WPEP (PEP is the peak power). Data communication 100W is twice the peak power. Remember to use halved power in FM and data communication FT8 modes!Specifications:Product Name: 49:1 BalancerMaterial: PlasticColor: Gray/BlackSize: 120*80*30MMPackage Content:1*49:1 Balancer (Gray/Black optional)Note:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.

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