Shunt feed tower 160 meters
WebI have tried verticals, slopers, inverted V's and other 80 meter antennas on or near my 160 meter tower with little success. The impedance of any such antenna seems to be severely altered by the nearby tower. ... Dual band shunt-feeding tower on 160/80, Herb Schoenbohm <= Re: Topband: Dual band shunt-feeding tower on 160/80, Pete Smith N4ZR; WebJun 27, 2009 · On 20 through 10 a yagi or quad would be better for DX, but on 80 and 160 a shunt fed tower could be bliss. Lots of information on Google. Reply. W. ... If I have a tower close to a 1/4 wave length on 80 meters, ... Tuning a shunt fed tower is very similar to feeding a gamma fed yagi element except the length of the gamma arm is much ...
Shunt feed tower 160 meters
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WebFeb 20, 2024 · This shows the method for shunt feeding a tower. Using two different analyzers I show how to find the 50 Ohm point on the tower to achieve a 1:1 SWR match. Also explained is the effect of wire diameter on SWR bandwidth and reactance. http://www.k3zxl.com/Tower_Vertical/ZXL-Super%20Vertical.htm
http://lists.contesting.com/_towertalk/2010-02/msg00442.html WebFeb 21, 2024 · Very nice. I just use the MFJ anylazer and tune for 50 ohm J+0 reactance ,or close as I can get. I like to keep the VSWR under 1.7:1 at the dip. Or return loss under 18. You will need a shunt coil at the feed for the lower frequencies. That antenna will be 12 ohms on 75 meters or something very low. Here is my experimental 160 meter loading coil.
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WebMotivation for this Antenna • Very windy! The 160 m Inverted-L tied to tree came down often • ~ 250’ - 300’ ground slope from JA to EU • Two towers and trees only 65’ – 80’ tall • 80 m and 160 m dipoles did not perform well– too low? • 30 ground radials (~ 50’ each) installed for eventual vertical use.
WebIf you have a tower, you may elect to shunt feed it (with your HF beam antenna in place) and add some top loading. WIFB's Antenna Notebook and The ARRL Antenna Book describe methods for doing this. A popular and … how do you treat tonsil stonesWebIn accordance with the present invention, a single shunt feed mechanism, including a single gamma section and a single impedance matching circuit, is employed to enable an antenna tower as an effective radiator in plural wave length bands without having to alter the upper tie point of the gamma section to the antenna tower. In one embodiment, the shunt feed … how do you treat toxoplasmosisWebThe 160 meter success with a tower only 70 feet tall could easily be applied to a shorter tower for 80 meters. ... A shunt coil of about 100 microHenries at the feedpoint (67 turns … how do you treat tracheal collapseWebMar 5, 2001 · tower is at least 60 feet up there, shunt feeding it may be a lost. cause on 160 meters! Assumming things are still going OK here, you terminate the ground end. of the gamma wire into a variable capacitor. For all my 40 and 80 meter. stuff, I use the old capacitors out of BC-375 tuning units and the like. how do you treat toenail fungus naturallyhttp://www.k0bg.com/myths.html phonic max 1000WebThe coil is 20 turns, #12 solid, 1 & 1/4 inch I.D. ( closet hanger dowel works great ) spread to 5" long, ( thats 4 turns per inch ). One end to feed point, other to ground. Clip lead from ground taps up the coil to adjust the inductance used. Eight turns works perfect for 40m, and 4 turns for 20m. Mind you, this is on a wagon - results will ... phonic max250Web160 Inverted L Antenna. 160 Inverted L Antenna – by N4JTE. Between watching unending Law and Order repeats and the XYL’s Lifetime movie sagas, compounded by a dead 40 meter band here at night, I became so … how do you treat toenail fungus