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3 Results Found For "in-line"
SOTAbeams Open Wire Line Spacers
SOTAbeams Open Wire Line Spacers are light and strong, heavy duty insulators made with modern materials that make it easy to build your own very low-loss ladder line! Features of these Open Wire Spacers: • Made from a specially selected mix of ABS and PVC to give great strength coupled with good UV resistance and tolerance to a wide temperature range, -58 to +194 degrees F (-50C to +90C) • Unlike heavy ceramic insulators which tend to slip with time on vertical ladder lines, these spacers are lightweight, just 0.2 oz. (5.5g) • Wire clips in easily and spacers stay in place • Suitable for insulated or uninsulated wire 12 to 18 AWG (2.5mm-1.0mm diameter) • Line spacing 4.4 in. (110mm) Spacer length 4.6 in. (120mm) • Spaced to create a feedline with a nominal impedance of 600 ohms • Recommended distance between spreaders is 27 in. (70 cm) • Hole in the center for attachment to wall stand-off or building cage dipoles • Spacers can be used to build special folded dipoles Sold in packs of five (5), it is easy to order SOTAbeams Open Wire Line Spacers in North America from DX Engineering.
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$10.99
SOTAbeams USB Battery Pack Keep-Alive Load Kits
SOTAbeams USB Battery Pack Keep-Alive Load Kits are easily assembled PC Board kits that provide an adjustable USB DC load. Some power banks and many USB battery packs switch off (go into a sleep mode) if the current being drawn is too low. This means that your device works for a few minutes and then stops. Often just a few extra milliamps current draw will keep the battery pack alive. There are various circuits on the web that give a pulsed load which works with some battery packs - but unfortunately SOTAbeams' tests have shown that such circuits don't work reliably with all battery packs. Just plug one of these Keep-Alive Load Kits into your battery pack and increase the current until battery pack stays on reliably (usually between 6 - 150 mA). Depending on the current that your powered device takes it may be a little as a few milliamps. An on-board LED indicates if the battery pack is live. The load supports a standard USB data connection. USB plug and socket for easy in-line connection. A heat-shrink sleeve is provided to protect the unit in the field. Don't have your WSPRlite lose its power source! Keep it powered up with SOTAbeams USB Battery Pack Keep-Alive Load Kits from DX Engineering.
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$15.99
SOTAbeams WSPRlite Power Conditioner Kits
SOTAbeams WSPRlite Power Conditioner Kits are ideal for running your WSPRlite Antenna Performance Analysis System from a battery or "wall-wart" power supply. WSPRlite Power Conditioners convert any 7 - 20 Volt DC supply into a super-clean and quiet 5 Volt USB supply - perfect for your WSPRlite! SOTAbeams use a linear regulator to avoid the noise problems so often associated with cheap switching regulators. Rated at 200 mA and with a re-settable breaker, these power conditioners will keep your WSPRlite happy - and safe too. Their DC input is protected against voltage spikes by a special TVS diode and is provided with additional smoothing with a low-ESR input capacitor. These features have been added in case you wish to use your WSPRlite in a mobile setting. Unlike simple chargers, SOTAbeams also condition the data lines to avoid unwanted noise affecting your WSPRlite. WSPRlite Power Conditioner Kits are supplied with a PowerPole for the DC input and a standard USB output. It's ideal for running your WSPRlite at home or in the field! The PCB has M3 mounting holes (mounting hardware is not supplied with board kit). These kits require assembly, including soldering to a PC board. However, they are suitable for beginners. Supply clean, stable power to your WSPRlite! Order SOTAbeams WSPRlite Power Conditioner Kits from DX Engineering!
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$16.99