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50LFA4

50LFA4

3,0m

Peso: 3,5 Kg.
Max. Potencia: 5,0 kW

Yagi Antenna

Yagi Antenna

Rev. V1.6 - 26/02/2021

17800.06-4

Thank you for choosing EAntenna.

 
All our products are manufactured and developed with the best materials on the market, to offer the best qualities and guarantees to our 
customers.

 The LFA antennas have an input impedance of 50 Ohm in the antenna, so no coupling is necessary. The loop is at the same time a coupling 
system and director element and this presents many advantages when modeling.

The 'real' impedance of each LFA varies greatly. But, the impedance presented at the antenna entry point is always 50 Ohm. Therefore, there 
is no limitation on the results of any optimization tool achieved with a single input impedance, but it manages to change the width and length of 
the loop keeping the impedance at 50 Ohm. This feature is very important to ensure good performance, bandwidth and low SWR in the 
antenna.

This additional flexibility also allows more lateral lobes to be suppressed and a better front-to-back (F / B) ratio compared to traditional Yagis. 
With time it is possible to achieve an excellent balance between design, F/B, gain and bandwidth.

Additionally, the proximity of the loop and the antenna entry point make the LFA less susceptible to noise and static nearby. In addition, the low 
level of the LFA lateral lobes provides a winning formula for an antenna with super low noise!

We detail the materials used, for their best use and assembly. All the fittings are made of stainless steel and the aluminum is made of T6061 or 
T6063 alloy, known as Duralumin that offers the best conditions to be weatherproof, the force of the wind and the best conductivity. The 
plastics used, are Polyamide and offer the best hardness and durability for years and years.
We offer warranty on operation, and warranty on hardware, delivering the hardware kit with some additional pieces for possible losses or 
forced breaks. In addition, we offer Allen keys and fixed mounting elements.
In the following pages you can see detailed graphics of the parts.
 

Summary of Contents for 17800.06-4

Page 1: ...s additional flexibility also allows more lateral lobes to be suppressed and a better front to back F B ratio compared to traditional Yagis With time it is possible to achieve an excellent balance between design F B gain and bandwidth Additionally the proximity of the loop and the antenna entry point make the LFA less susceptible to noise and static nearby In addition the low level of the LFA late...

Page 2: ...ain 9 36 dBi F B 23 46 dB SWR 1 0 1 1 4 1 Impedance 50 Ohms Max Power 5 kW Boom Length 3 0m Wind Survival 200kmh 125mph Weight 4 3 Kg 14 0 21 0 MHz 1 1 3 1 5 2 0 3 0 5 0 3500 KHz 3800 KHz Ω 300 W Boom Size 30x30x2mm Element Diameter Center Element 13x1mm Tips 10x1mm ...

Page 3: ...o Scale Medidas no a escala REF 0 941m D1 0 80m D2 0 6995m 1 2m DE1 ALIMENTACION FEEDPOINT DE2 0 643m 1300mm Placa Mástil Mast Plate 0 228m 0 228m 0m 0 606m 0 605m 1 461m 0 892m 1 497m 2 958m ENGLISH ESPAÑOL ...

Page 4: ...ra no dañar ninguna rosca del BOOM EA010039 EA010039 EA010039 DIN 933 M6X16 DIN 9021 M6 ESPAÑOL BOOM BOOM A A EA010039 EA010039 EA010039 DIN 933 M6X16 DIN 9021 M6 ENGLISH To assemble the BOOM you have to match frontally boom parts with the same letter eg AA BB CC etc and once done the boom clamps EA010039 go with fixing screws DIN 933 M6X16 and washer DIN 9021 M6 It is recommended to put all of th...

Page 5: ... de 13mm Ø y con la ayuda de una cinta métrica marcar a la mitad 60cm y una vez centrado fijar con la otra parte del EAHYP013 con los tornillos DIN 912 M6X40 como aparece en el dibujo inferior Para colocar cada placa al boom se fija mediante los tornillos DIN 912 M6X20 y arandela DIN 9021 M6 Esta placa debe de quedar bien firme para la colocación del elemento El paso siguiente seria igual que los ...

Page 6: ...end of the tube Once elements are assembled correctly proceed to put each item on the plate to the boom which would be the last step assembly Attach plates to boom as specified below Once you have the elements assembled and the boom it s time to mount the plates to the boom and then the elements to the plate What we advise is to start with the plates to the boom if you rise up the antenna in one p...

Page 7: ... hagan la mayor fuerza sobre el mástil mediante abarcones redondos de M8 Los abarcones redondos de M8 A 0163 van fijados mediante arandela DIN 9021 M8 y tuerca DIN 934 M8 proporcionadas en el mismo abarcón y fijada al mástil con la Mordaza 23035 50 Detallamos dibujos para una mayor ilustración 23035 50 A 0163 P0500031 P0300004 Vista lateral desde el mástil Vista laterall desde el BOOM P0400006 EA0...

Page 8: ... the mast by means of M8 round U bolts Round U bolts M8 A 0163 are secured by washer DIN 9021 M8 and nut DIN 934 M8 provided in the same bag and fixed to the mast with clamp 23035 50 Detailed drawings for further illustration EA013013 EA013013 23035 50 A 0163 P0500031 P0300004 P0400006 MAST TO BOOM PLATE ASSEMBLY Front view from Mast Side view from Mast Front view from BOOM Side view from BOOM ENG...

Page 9: ...ue lo conseguido en el ajuste nos dé el mismo resultado estando a cualquier otra altura ya puesto en la torre mástil ESPAÑOL BOOM COAXIAL Vivo Inner Conductor Malla Outter Conductor COAXIAL Alimentación mediante coaxial Después de varios ensayos vemos que el balun de aluminio hace peor trabajo que un choque de coaxial Por esto recomendamos hacer a escaso centímetros o metros de la alimentación un ...

Page 10: ... 1 or 2 meters above the ground while it is sufficient to have achieved in the setting give us the same results being any other height on the tower or mast ENGLISH BOOM COAXIAL Coax cable feeding After several trials we see that the balun aluminum makes it worse job than a coaxial choke For this we recommend 5 turns of 8 cm and thus the RF return will be minimal or absent In the drawing advise you...

Page 11: ...Plotter de Elevación ENGLISH ESPAÑOL ...

Page 12: ...Plotter de Azimut ENGLISH ESPAÑOL ...

Page 13: ...Gráfico de R O E ENGLISH ESPAÑOL ...

Page 14: ......

Page 15: ... x 100 x 6mm PACKING LIST LISTA DE PIEZAS BOLSA 1 BAG 1 Mordaza Tube Clamp Abarcon Cuadrado Square Clamp DIN 9021 DIN 934 50mm M8 30mm M6 M6 M6 2 2 4 4 1 2 23035 50 P0500030 A 0163 S9021 96 S934 96 Llave Allen Llave Fija 5mm M10 1 1 P1300001 P1300003 ENGLISH ESPAÑOL DIN 127 WASHER DIN 934 NUT M8 M8 4 4 S934 98 S127 98 Abarcon U Bolt 50mm ...

Page 16: ...6 RIVSS_M4 PART PIEZA Nº IMAGEN PART IMAGE DESCRIPCION DESCRIPTION MEDIDAS SIZES CANTIDAD QUANTITY BOLSA 2 BAG 2 DIN 9021 M6 10 S9021 96 Tornillo Allen DIN 912 Allen DIN 912 Screw M6x20mm 10 S912 9620 Placa para Elementos Elements plates 5 EA010026 Plásticos Plastic Blocks 13mm Ø 10 EAHYP013 Tornillo Allen DIN 912 Allen DIN 912 Screw M6x40mm 20 S912 9640 Abrazadera Sin Fin Hose clamp Abrazadera Si...

Page 17: ...0mm x 13mm Ø 900mm x 10mm Ø 799 5mm x 10mm Ø 1 1 2 2 2 2 4 1 2 2 50LFA4 A A 50LFA4 A B EALOOP60606 DE1 DE2 REF D1 D2 PACKING LIST LISTA DE PIEZAS Pieza lateral Loop Loop Driven DE1 EXCITADO DE1 DRIVEN DE2 EXCITADO DE2 DRIVEN REFLECTOR Parte Central de Elementos Middle part of Elements Parte Central de DE1 Middle part of DE1 DIRECTOR 1 DIRECTOR 2 ENGLISH ESPAÑOL 1640mm x 30mm 1310mm x 30mm ...

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