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Summary of Contents for DX Engineering DXE-RPA-1
- Page 1 RPA-1 HF Preamplifier DXE-RPA-1 DXE-RPA-1-INS Rev 4b U.S. Patent No. 7,319,435 © DX Engineering 2017 1200 Southeast Ave. - Tallmadge, OH 44278 USA Phone: (800) 777-0703 ∙ Tech Support and International: (330) 572-3200 Fax: (330) 572-3279 ∙ E-mail: DXEngineering@DXEngineering.com - 1 -...
- Page 2 The DXE-RPA-1 requires a well-filtered, negative ground, 12-18 Vdc @130 mA power source. Depending on the supply current, you might also need an inline fuse. Powering the DXE-RPA-1 through the coax feedline requires a voltage injector circuit (not included) and an internal connection change.
- Page 3 The ratio of equivalent noise power developed at the input to that generated by thermal noise in the source resistance, usually expressed in decibels. If it were possible, a perfect amplifier would have a noise figure of 0 dB. The DXE-RPA-1 is extremely quiet, and does not contribute noticeable noise to receiving systems.
- Page 4 Installation Mounting Optimum electrical location of the DXE-RPA-1 varies with antenna system background noise level. A good receiving system requires the antenna to establish system noise, rather than amplifying devices. One common myth is that preamplifiers must be mounted at or near antennas to be effective.
- Page 5 Many inexpensive wall mounted transformer DC supplies are not 'clean' and have RF noise components on their DC output. Place the fuse at the power supply, rather than at the DXE-RPA-1. The DXE-RPA-1 power connector uses a standard 2.1 mm barrel type plug (included). You can use a well regulated +13.8 Vdc supply provided it supplies +12-18 Vdc negative ground (has the...
- Page 6 DXE-F6 - 75 ohm F-6 Style, Direct Bury Coaxial Cable - Full Spool or Custom Cable Assemblies DX Engineering recommends using a high quality 75 Ω “flooded” F6 type coaxial cable. Flooded style cables have the distinct advantage of automatically sealing small accidental cuts or lacerations of the jacket. Flooding also prevents shield contamination and can be direct-buried.
- Page 7 - It's the RTV! Normal RTV gives off acetic acid when it cures. That's the vinegar smell. The acetic acid causes the corrosion. DX Engineering has located a Neutral Cure RTV made right here in Ohio that is non-corrosive and is safe for sealing those baluns and other electronic gear that are going to be out in the weather.
- Page 8 Warranty All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one (1) year from date of shipment. DX Engineering’s sole obligation under these warranties shall be to issue credit, repair or replace any item or part thereof which is proved to be other than as warranted;...
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