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Momobeam PENTA10 10-12-15-17-20 Assembly Manual

Five bands yagi antenna 28mhz - 24mhz - 21 mhz - 18 mhz - 14 mhz
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Manuale utente
EN_PENTA10 1012151720
PENTA10 10-12-15-17-20
28MHz - 24MHz - 21 MHz - 18 MHz - 14 MHz
Momobeam
C.da Berbarello 508 - IT-91025 Marsala Italy
P.Iva IT-02439250818 Tel. +39 393 9906980
– info@momobeam.com
www.momobeam.com
Five Bands Yagi Antenna
ASSEMBLY MANUAL
Data emissione
Revisione
07/11/2021
05
pag. 1

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Summary of Contents for Momobeam PENTA10 10-12-15-17-20

  • Page 1 Manuale utente Data emissione Revisione EN_PENTA10 1012151720 07/11/2021 PENTA10 10-12-15-17-20 Five Bands Yagi Antenna 28MHz - 24MHz - 21 MHz - 18 MHz - 14 MHz ASSEMBLY MANUAL pag. 1 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 –...
  • Page 2 EN_PENTA10 1012151720 07/11/2021 The content of this manual is the intellectual property of Momobeam. No part of this publication may be reproduced or transmitted in any form or by any means without prior permission of Momobeam. Please, carefully read this assembly manual before starting to assemble the antenna.
  • Page 3 This makes the assembly of Momobeam antennas very easy and intuitive. The Momobeam RF choke (supplied) is placed between the coaxial feed line and the feedpoint. Any high quality choke used should not have lead lengths longer than 2 inches.
  • Page 4 RF Choke (included). Momobeam antennas are designed to operate over a large bandwidth for each band. No adjustment to the antenna is necessary if the assembly is in accordance with all instructions.

  • Page 5: Specifications

    3. Keep the Boom upside down while completing Step 3 (3.2, 3.3 and RF Choke), then rotate the boom back such that the elements are now mounted on the bottom prior to Step 3.4. pag. 5 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 6 Do not over-tighten. Extreme force is not required! Once hardware begins to seat firmly, it only takes a few more turns to properly secure parts. pag. 6 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 7 IMPORTANT: The boom-to-mast plate is NOT symmetrical and must be assembled as shown in the picture. Note: The boom-to-mast plate must be mounted perpendicular to the ground. pag. 7 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 8 The Boom should now be rotated such that element plate assembly can be done on the top side of the boom. Element location markings on the boom should now be on top. pag. 8 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 9 Elements E, F, G, H, I are driver elements. Their central section is divided in the middle through a POM-C UV-Resistant insulator (preassembled with insulator, 2 bolts, 2 washers and 2 nuts). Top view Bottom viev pag. 9 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 10 Tighten bolts firmly. Make sure clamps are tightened evenly alternating between the bolts. There should be no gaps between the two insulating clamps. Do not over tighten. pag. 10 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 11 Important: For driver elements (E/F/G/H/I) loosely tighten counterplate bolts as slight adjustment might be needed to the position when assembling the phase lines. Top view Bottom view pag. 11 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 12 Manuale utente Data emissione Revisione EN_PENTA10 1012151720 07/11/2021 pag. 12 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 13 Once both phasing lines and all plates with all center element sections are attached, check all spacings between the elements and then firmly tighten all bolts. pag. 13 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 14 Remove one nut and one washer. Position ring terminals of the choke, then add the washer and secure with the nut. pag. 14 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 15 This creates an excellent electrical connection and a high strength mechanical junction. All larger diameter holes must face downward. pag. 15 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 16 Manuale utente Data emissione Revisione EN_PENTA10 1012151720 07/11/2021 14 MHz 18/21 MHz 24/28 MHz pag. 16 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 17 2 Ubolts, 2 saddle clamps, 4 M8 washers, 4 M6 self locking nuts. Hardware is found in the "U bolt" hardware bag. pag. 17 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
  • Page 18 Manuale utente Data emissione Revisione EN_PENTA10 1012151720 07/11/2021 pag. 18 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...

  • Page 19: Troubleshooting

    Interaction with nearby metal objects or other antennas If no errors are found in the measurements, it is likely that your new Momobeam antenna has been mounted at an insufficient height (less than 10 meters) or it is possible that there is an interaction with other antennas or metallic objects (if they are less than 3 meters / 10 ft away).