CBand Satellite Dish Orthomode Feed Horn LNB Setup

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=ENOfHqHpMg8

THE HAPPY SATELLITE NERD EPISODE 86 #FreeSatelliteTV #FreeToAir #FTASatellite • The ortho is more for commercial headend applications. The idea is to • separate the polarizations and guide them to their own wave guides. This • cuts down on cross polarization interference and generally you get a • cleaner signal. The single orthomode feed is used by TV or radio • stations that need just a single polarization. In this case, they will • get the maximum S/N ratio because there is only one microwave • polarization bouncing around inside the feed. • https://rover.ebay.com/rover/1/711-53... • I also we look at a prime focus Ku feed horn. This is the correct feed • horn needed to illuminate a prime focus dish, as opposed to an offset • dish. Many hobbyists complain that they can't get good ku results with a • c/ku combo feed. This is because that feed is not designed to • efficiently illuminate a prime focus dish. Also, some people use offset • feeds on their big prime focus dishes, but again, the illumination • pattern will be wrong because of the f/d mismatch and they will get poor • results. The correct ku feed horn to use is the one I sent you. It is • matched for f/d = 0.4 It has several layers of scalars the create a • broad illumination pattern and utilize the entire surface of the prime • focus reflector. This is the key to getting excellent ku signal • reception. You just have to make sure you get the feed positioned at the • phase center of the reflector. Only way to do this is by hand. It will • be very near the focal point, but you will have to experiment. • Unfortunately, these feeds are designed for 3 strut antennas, whereas • your mesh dish has 4 struts. You may have to improvise to get it • attached. You could try attaching it to a c band scalar ring with 3 • screws. • Available at www.Tek2000.com also check out Satellites-Gallore on eBay https://rover.ebay.com/rover/1/711-53... • http://www.tek2000.com/cgi-bin/web.cg... • DESCRIPTION • This is a dual output orthogonal C-Band feed horn used for simultaneous reception of Vertical and Horizontal microwaves. • It separates the vertical and horizontal polarities and conducts them to their own rectangular waveguides. Uses Gardiner or Norsat LNBs (sold separately) at the waveguide openings. • Note: This feed horn setup is typically used by cable head-ends to allow switching of both polarities to multiple decoders/receivers. You can also use it on a single receiver home satellite setup by using a 2x1 Voltage switch (sold separately). • FEATURES • Precision cast-aluminum construction • INCLUDES • Dual Mode C-Band Feedhorn • Scalar Ring • Mounting Screws • http://www.tek2000.com/cgi-bin/web.cg... • Our latest Ku-Band Prime-Focus LNBF featuring high gain, low noise and excellent stability. This LNBF will broaden the feed beam for correct illumination of a C-band dish. • This LNBF is matched for a dish f/D = (0.35 - 0.45) to give you the right illumination to receive Ku band satellite signals on a prime-focus 180cm, 210cm, 240cm, 300cm, 350cm or 400cm dish. • NOTE: Use this LNBF to turn your prime-focus reflector into a POWERFUL ku-band prime focus dish! • NOTE: Do NOT make the mistake of using an offset ku LNBF (f/D = 0.6) on a prime focus dish (f/D = 0.38) because only a small part of the reflector will be illuminated and signal gain will be limited. • NOTE: If you have a spare C-band dish sitting around, this is the LNBF you need to convert it to a POWERFUL ku-band antenna to catch those weak and elusive ku-band signals. Works with both solid and mesh antennas. • FEATURES • Precision cast-aluminum construction • High-Gain and Low-Noise • 9.75 GHz and 10.6 GHz L.O. • INCLUDES • Ku Prime-Focus LNBF • Scalar Ring • Mounting Screws • / ottawaoctane • / robbiestrikevideos • / robbiestrike3 • (c) Robbie Strike 2019 http://www.RobbieStrike.com • www.FreeSatelliteTV.net

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