Description

The Alpha BASIC-FMJ is a portable HF antenna that will handle 250W PEP SSB, and which is pre-tuned and requires no moving clips on coils or readjusting of whips for tuning. You should also use an external antenna tuner if your antenna is installed over a poor ground or not placed in a clear area.

Purpose: When fully deployed with the NVIS element, the antenna system is directional and can be is configured to launch your signal at your target in the opposite direction the NVIS element is run. For an omnidirectional signal pattern, you may remove the NVIS element.

Installation Note: Never Remove or Loosen any of the Bolts, Washers, Nuts, or Caps on the Alpha Match.

History: Years of perfecting the manufacturing process has enabled Alpha Antenna to offer the worlds most refined & resilient antenna, which is now in use by NASA and military forces around the globe.

Function: For targeted rapid deployment of ALE/Digital/CW/SSB/AM modes. The Alpha FMJ (Full Metal Jacket) portable HF antenna system enhances high band DX with the Vertical MilStick element while low band Near Vertical Incident Skywave is simultaneously enhanced with the NVIS element, per the antenna model at the bottom of this page.

Included:
1 – 13 feet 1 1/2 inch .433 OD MilStick whip made from 26 inch section aluminum elements
1 – Alpha Match encased in a FMJ (Full Metal Jacket) 316 Stainless Steel and weather proof housing that shields all internal components from all RFI (Radio Frequency Interference.
1 – Wire NVIS element
1 – QUICK Deployment Riser on Stainless Steel Jaw Mount=No loose hardware
1 – 8′ ground wire with ground stake

Specifications:
• Frequency: 10M – 80M
• 250 PEP SSB, 125 CW, or 25 watts for digital modes
• RF Connection: SO-239

3D Model of the Alpha Antenna® FMJ (Full Metal Jacket) system

Analysis of the Alpha FMJ (Full Metal Jacket) system on the Jaw Mount at 6′

Difference between FMJ and MIL 2.0

Other than the physical differences, the FMJ that uses a longer Mil-Stick and is more balanced with a Grounded Counterpoise resulting in better SWRs and stainless steel housing for higher RFI rejection than the MIL 2.0, which is more compact than the FMJ.

Advancements:

Touch free operations: The FMJ HF antenna system enables you to switch bands or change frequencies without having to chance switches, jumpers, or coils.

Increased ERP (Effective Radiated Power): The electrically balanced OCF circuit of the FMJ line of systems has an increased ERP over the base fed vertical (end-fed) antennas that use lossy matches to force low SWRs.

Directionality is a unique feature to the FMJ line of HF antenna systems: The combination of a Vertical element with the NVIS and Grounded Counterpoise elements provide for a directional antenna system that enhances lower take off angles for increased DX communications, while simultaneously enhancing NVIS (Near Vertical Incident Skywave) for stateside communications.

The Alpha Match is a balanced 316 stainless steel housing: The Alpha Match is a transformer that is wrapped in a tar paper dielectric, which is then enclosed in a 316 stainless steel housing. This is what gives the Alpha Match both the capacitive and inductive balance. Once the elements are installed, then their capacitive characteristics enables RF to radiate. It is important to note that the Alpha Match housing is made of 316 stainless steel, which is non-magnetic and this helps to eliminate eddy currents.

Electrically conductive Industrial strength MilStick whip: The composite of the .433 inch diameter MilStick whip is a high strength, high quality, aerospace 7075-T9 alloy 13 feet long. The construction of each element has a scratch-resistant hard-anodized surface. This surface is fully removed from each insert and also removed 2.5 inches inside each element. The inserts are then electrically bonded, where full contact RF continuity and connectivity is used to ensure maximum efficiencies are achieved. At the base of the whip an embedded 8740 Steel (chrome moly) cadmium plated stud supports the MilStick on the Alpha Match.

Memory free industrial Wiring is used: Sheathed memory free wiring is used, which is rated for temperatures from -40°C to +175°C vs wiring that is so light duty that it can be wrapped around a kite string holder.

A Field Bag: The field bag for the Alpha FMJ systems is made from 600D nylon, which includes high quality zippers. This bag also has a front pocket and a larger inner compartment, plus a shoulder strap.

Unique Jaw Mount with an included Riser means NO Loose Parts when deploying or disassembling the antenna.

Reviews https://www.eham.net/reviews/view-product?id=10357

https://alphaantenna.com/