Related Manuals for Momobeam TRI7 10-15-20
Summary of Contents for Momobeam TRI7 10-15-20
- Page 1 Manuale utente Data emissione Revisione EN_TRI7 101520 WEB 07/11/2021 TRI7 10-15-20 Triband antenna WEB MANUAL pag. 1 Momobeam C.da Berbarello 508 - IT-91025 Marsala Italy P.Iva IT-02439250818 Tel. +39 393 9906980 – info@momobeam.com www.momobeam.com...
- Page 2 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.
- Page 3 RF choke (see instructions at the end of the manual). If you will make yourself an RF choke or if you do not use a Momobeam balun, make sure that the wires that connect to the antenna are not longer than 5cm.
- Page 4 EN_TRI7 101520 WEB 07/11/2021 Thank you for purchasing a Momobeam antenna, this user manual will guide you towards the correct assembly and mounting of your new and high-performance directive antenna. TRI7 10 15 20 (TRI7) is a full-sized Yagi antenna for amateur radio operators that three HF amateur radio bands (14/21/28 MHz) and it is designed for maximum performance.
- Page 5 Please, do not over-tight. Extreme force is not required! Once hardware begins to seat firmly, it only takes a few more turns to properly secure parts. 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 (see Boom to mast plate position picture). Note: the boom to mast plate must be mounted perpendicular to the ground. 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 Manuale utente Data emissione Revisione EN_TRI7 101520 WEB 07/11/2021 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 Elements D, E, F 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. 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 You will find hardware in "clamps hardware" bag. Tighten bolts firmly. Make sure clamps are tighten evenly alternating between the bolts. 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 Important: for driver elements (D / E / F) loosely tighten counterplate bolts as you might need to slightly adjust the position when assembling phase lines. Top view Bottom view 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 Once you assembled both phase lines and all plates with all elements central parts, check all spacings between the elements and then firmly tighten all bolts 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 This creates a mechanical and electrical strong junction. All bigger diameter holes must face the ground. 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 Manuale utente Data emissione Revisione EN_TRI7 101520 WEB 07/11/2021 14 MHz 21 MHz 28 MHz 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 Now proceed to fix the antenna to the mast as shown in the figure below. You will need 2 Ubolts, 2 saddle clamps, 8 M6 washers, 8 M6 self locking nuts. You will find hardware in the "U bolt" hardware bag. 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 07/11/2021 BALUN TRI7 comes without a balun. We recommend to use a Momobeam balun that is available in three versions: 3kW, 5kW and 10kW. Alternatively, you can use a 1:1 balun of your choice or make a coax cable RF choke (see instructions at the end of the manual).
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Page 16: Problems And Solutions
- Check all measurements and spacing. 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 away).
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