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Summary of Contents for Alpha Antenna Alpha HD
- Page 1 User Guide for the Alpha HD (Heavy Duty) Portable HF Antenna Manufactured by: Alpha Antenna 1.888.482.3249 Website: http://AlphaAntenna.com User Guide Version 4.0 April 18, 2022 Page 1...
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Page 2: Table Of Contents
REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR) If your Alpha HD portable multi-band antenna needs improvement, let us know. You, the user, are the only one who can tell us what you don’t like about your equipment. Mail or email us an EIR to the contact information on the last page of this manual. -
Page 3: Safety Information
Safety Information When installing or operating this antenna or any other antenna/tower, please observe the following safety tips. High voltages are present when transmitting, no matter how much or little power is applied. Do not touch any part of the antenna while transmitting. NOTE –... -
Page 4: Excess Rf Exposure Warning
The FCC Office of Engineering Technology (OET) Bulletin 65, Supplement B, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio frequency Electromagnetic Fields directly concerns the use and operations of all Alpha Antenna systems. This bulletin establishes safe operating distances from antennas associated power levels in order to permit the operator and persons who may be impacted by operation to exist in a safe environment. -
Page 5: Section 1 - Concept Of Operation
The multipurpose ‘Full Metal Jacket’ (HD) is designed to be used as a portable antenna system by Alpha Antenna has several configuration options. These configuration options are the building blocks of the Alpha HD Antenna, and include deployments for: A) Mobile configuration and B) Portable carry options. - Page 6 deploying the MilStick vertical element simultaneously with the horizontally sloped NVIS element. Radiation characteristics of the vertical element enhance DX, while radiation characteristics of the NVIS type are achieved through the use of the NVIS element mounted above ground. Such radiation characteristics are omnidirectional in azimuth and provide an l-hop range of about 300 miles.
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Page 7: Section 2 - System Overview
Never Loosen any of the Bolts, Washers, Nuts, or Caps on the Alpha Match. This instruction manual contains technical data, installation procedures, theory of operation, and an illustrated parts list covering the Alpha HD multiband Antenna and optional components. The antenna was designed to be used with HF radios. -
Page 8: Equipment Characteristics
Equipment Characteristics The Alpha HD portable multi-band antenna is designed to simultaneously provide high- angle radiation (near vertical incidence – NVIS) and low-angle radiation (long-range and DX) propagation. Your signal will launch opposite the direction of your NVIS element, which will be in the direction your Ground wire is run. - Page 9 SWR Analysis on Tripod with NVIS, Vertical, & Counterpoise elements Page 9...
- Page 10 SWR Analysis on Jaw Mount with NVIS, Vertical, & Counterpoise elements MOTO SWR Analysis with 25 feet of coax on Jam Mount Page 10...
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Page 11: Leading Particulars
Leading Particulars Leading particulars and equipment for the Alpha HD portable multiband antenna are listed in Tables 1-2 to 1-4. Personnel should become thoroughly familiar with data and procedures contained in the entire technical manual before working on or using the antenna. -
Page 12: Section 3 - General Information
SECTION 3 – General Information Site Selection For maximum antenna operating efficiency, the Alpha HD portable multi-band antenna should be located in the center of a clear area. Installation of the antenna near any tall or large metal objects should be avoided, as these can cause an increase in SWR. Under no circumstances should structures come in contact with the antenna. -
Page 13: Section 4 -Deployments
SECTION 4 –Deployments Option A – Portable Deployments Option A.1 – Tripod Deployment (Propagation is away from NVIS) Never loosen any of the bolts, washers, nuts, or caps on the Alpha Match. Step 1 – Extend/secure the legs and tripod on TRPDxxx (TRPD-HD-2.1 or TRPDLTWGHT-2.1). -
Page 14: Option B.1 - Instructions (Propagation Is Away From Nvis)
Option A.2 – Jaw Mount (Propagation is away from NVIS) Step 1 – Install JWMNT-2.1 on a stable support Step 2 – Place the GND-2.1 connector on the bottom of MTCH-2.1 or JWMNT-2.1 Step 3 – Screw the MTCH-2.1 in place onto JWMNT-2.1 Step 4 –... -
Page 15: Option C - Mobile Deployment (Mobile & Stationary Mobile)
Step 3 – Insert the 24x3/8 stud on the bottom of the Alpha Match into the hole of the Alpha Antenna Jam Mount and attach the extra loose nut that came with the mount. Step 4 – Attach your coax from your wide-band tuner to the SO-239 on the MTCH-2.1. -
Page 16: Option D - Installation Of Optional Four 35 Foot Nvis Elements
Step 2 – Insert the 24x3/8 stud on the bottom of the Alpha Match into the hole of the Alpha Antenna Jam Mount and attach the extra loose nut that came with the mount. Step 3 – Place the GND-2.1 clip connector on the bottom hex nut of MTCH-2.1 Step 4 –... -
Page 17: Option D.2 -Image, Tripod With Optional Nvis
Step 6 – Place the four NVIS-3.1 clip connectors over the top bolt on MTCH-2.1 at Z0 Step 7 – Push the stakes of the four NVIS-3.1 elements at X1, X2, Y1, & Y2 Step 8 – Assemble MLSTK-2.1.XX & screw it into the top of MTCH-2.1 Step 9 –...
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