Hy-Gain Discoverer 7-1 Instructions Manual
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Hy-Gain Discoverer 7-1 Instructions Manual

Hy-Gain Discoverer 7-1 Instructions Manual

40-meter 1-element dipole antenna
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MODEL
DISCOVERER 7-1
40-Meter 1-Element
Dipole Antenna
ORDER NO. 371S
All rights in this publication are reserved. No part of the
publication
may
whatsoever without the expressed written permission of
Hy-Gain.
NOTICE
be
reproduced
in
any
manner

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Summary of Contents for Hy-Gain Discoverer 7-1

  • Page 1 MODEL DISCOVERER 7-1 40-Meter 1-Element Dipole Antenna ORDER NO. 371S NOTICE All rights in this publication are reserved. No part of the publication reproduced manner whatsoever without the expressed written permission of Hy-Gain.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS CHAPTER I General Description…………………………....……......1 Specifications .

  • Page 3: General Description

    WARNING with loading coils. The Discoverer 7-1 is also capable of being tuned to any frequency between When installing your system, take 7.0 and 10.5 MHz due to the linear-loading.

  • Page 4: Preparation For Assembly

    The area must be at least 3 feet by 45 feet (approximately 1 meter by 14 meters). If you All tubing supplied with the Discoverer 7-1 assemble the antenna over a grassy area, telescopes together. Make all measurement to precautions should be taken so that hardware is the given dimensions, plus or minus (±), no...

  • Page 5: Assembly Of The Boom-To-Mast Brackets And Boom

    CHAPTER 5 Assembly of the Boom-to-Mast Brackets and Boom Select the 2" x 26" boom section (Item No. 5), the The use of two split lockwahsers on the 5" two cast aluminum brackets (Item No. 1), the bolts may be necessary to properly tighten the casting-to-boom bracket (Item No.

  • Page 6: Assembly Of The Driven Element

    Assembly of the Driven Element Select a set of element-to-boom brackets (Item Turn the boom so that the element will be at 90 No. 4) and loosely assemble on the long end of degrees to the mast, and tighten all of the bolts the boom as shown in Figure 2.

  • Page 7: Assembly Of The Driven Element

    Select the DE2 sections (1" x 51", Item No. 9) Select the DE3 sections (7/8" x 55", Item No. and slip the end with the 1/4 inch hole into the 8) and slip the drilled ends into the open end of end of the DE1 sections.

  • Page 8: Compression Clamps

    Assemble a 3/4" compression clamp (Item No. Place a 7/16" caplug (Item No. 47) on each end 44) and slip it over the end of the DE3 section. of the DE5 sections. See Figure 4. Installation of Tubing Clamps Select the DE4 section (5/8" x 26", Item No. 7) When installing the clamps, place the clamp and slip the unswaged end into the DE3 section.

  • Page 9: Linear-Loading Wire Assembly

    Chart 1 DE5 Section Dimension Chart Linear-Loading Wire Assembly Select support insulators Identify the LLW sections from the drawing in ("Tombstone"-shaped) (Item No. 47) and install Figure 8 and assemble as shown in Figure 6, them on the DE1 and DE2 sections as shown in using the #10-24 x 1/2"...

  • Page 10: Installing "Hairpins" On Driven Element

    Figure 6 Installing "Hairpins" on Driven Element...

  • Page 11: Final Assembly

    An alternative shown in Figure 6. Strip your coax cable, install method is to use a Hy-Gain BN-86 50 ohm solder lugs (not supplied) and connect to the balun for easy connection to your coax cable.

  • Page 12: Identification Of Linear-Loading Wires (Llw)

    Figure 8 Identification of Linear-Loading Wires (LLW)

  • Page 13: Chapter4

    CHAPTER 4 Adjustment for Operation Between 7.3 and 10.5 MHz To adjust the Discoverer 7-1 to a setting above The Discoverer 7-1 can be adjusted to cover any 7.3 MHz, the linear-loading wires should be frequency between 7.3 and 10.5 MHz instead of shorted out at the appropriate locations.

  • Page 14: Installation

    Install these brackets on your mast where you You should retain your sales receipt or other want your antenna to be. Lift the Discoverer 7-1 proof of purchase for antennas that are still up to the mounting location and attach to the cast under warranty.

  • Page 15: Parts List

    PARTS LIST Item Part No. Description Qty 102734 Bracket, cast Aluminum......2 172735 Bracket, Casting-to-Boom ......1 172732 Clamp, Boom-to-Bracket ......1 165920 Bracket, Element-to-Boom, #14 ..... 2 171282 Tube, Boom 2" x 26........ 1 174868 Tube, Element, DE5, 7/16" x 68....... 2 190006 Tube, Element, DE4, 5/8"...
  • Page 16 Parts List 878244 Parts Pack, 371 S, Clamps and Misc..…………....1 168695 Clamp, Tubing, 1 1/4.....…………………..2 169339 Clamp, Tubing, 7/8......…………………..4 358756 Clamp, Tubing #6......…………………..4 (Not Used) 455625 Caplug, black, 2.......……………………..... 2 455644 Caplug, black, 7/16..……………………....... 2 463642 Insulator, Rod Support ....………………….....

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