ALPHA ANTENNA Broadband Mini Loop Digital Mode HF Instruction Manual

The Mini-Loop provides consistent results across various
environments and frequency ranges, making it versatile and reliable
for digital mode operations.

WSPR Tests

Conduct WSPR tests at different power levels and frequencies to
evaluate the performance of the Mini-Loop in various scenarios.

Usage Scenarios

When secrecy is crucial, clandestine communication using unseen
methods is essential. The Broadband Alpha Loop enables effective
communication while maintaining operational security.

FAQ

What is the maximum range achieved in the WSPR tests?

In the WSPR tests, the Mini-Loop achieved a maximum range of
1838km on the 20M band.

Can the Mini-Loop be used without a tuner for transmit
operations?

Yes, the Mini-Loop supports transmit operations without a tuner
in the digital mode from 10MHz through 54MHz.

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Broadband Mini-Loop
A Product of Alpha Antenna Wholly owned by Produc ve Industries, LLC
112 East Commercial Street, Pleasant Hill, MO 64080

______________________ Model Mini-Loop
Specifica ons, Analysis, & Usage
OPERATIONAL SPECIFICATIONS Specifica ons of this broadband digital mode Mini-Loop:
– Receive: Low noise characteris cs for digital mode from 1.8MHz through 1GHz. – Transmit: Support without a tuner for digital mode from 10MHz through 54MHz. USAGE SPECIFICATIONS – Deployable with quantum and/or spread-spectrum equipment.
o For equipment that simultaneously uses many frequencies. – Missions that require Ground-wave and/or Skywave HF communica ons. – Useful when an isolated solu on is required that requires no counterpoise. TECHNICAL SPECIFICATIONS Op on 1: 20W at 25% duty cycle, 10W at 50% duty cycle, and 5W for 100% duty cycle (digital modes). Op on 2: 100W at 25% duty cycle, 50W at 50% duty cycle, and 25W for 100% duty cycle (digital modes). Including but not limited to the MIL-STD-188 M110a digital communica ons mode that is rated at 25 wa s con nuous with bursts of 100 wa s digital for up to 1 minute using the MIL-STD Data Modem Terminal (MS-DMT) and Automated Message Terminal (AMT) so ware applica ons.
ESTIMATED GAIN (Based upon Field Strength Meter readings)
112 East Commercial Street, Pleasant Hill, MO 64080

Analysis
The following results were nearly iden cal, whether taken indoors, outside, or in a backpack. Analysis from 0-1GHz Analysis from 0-54MHz
112 East Commercial Street, Pleasant Hill, MO 64080

WSPR TX Test at 250mw
For TX we purposely tested the loop while deployed between two metal buildings & at 250mw. NOTE TX efficiencies increase as power increases, which can lower the usable frequency.
80M, 40M, 30M, & 20M TEST RESULTS for the Mini Loop +
112 East Commercial Street, Pleasant Hill, MO 64080

WSPR 40M RX Test
For all RX tests we purposely tested the loop while deployed indoors and between floors of a mul -story building.
Max Range = 1337km
112 East Commercial Street, Pleasant Hill, MO 64080

WSPR 30M RX Test
Max Range = 1797km
112 East Commercial Street, Pleasant Hill, MO 64080

WSPR 20M RX Test
Max Range = 1838km
112 East Commercial Street, Pleasant Hill, MO 64080

USAGE Where secrecy is paramount, communica on through unseen methods plays a crucial role. Some of the usage scenarios of clandes ne antennas include:
1. Clandes ne Communica ons in Cyber-Denied Environments: Context: In an era where internet-based communica ons are vulnerable to surveillance and a acks, intelligence opera ves seek alterna ve methods. Scenario: Imagine a situa on where an opera ve needs to communicate without exposing themselves to internet-based surveillance. Solu on: o Physical Separa on: Pla orms physically separated from the internet can be used. These pla orms are not suscep ble to internet-based surveillance or a acks. o Radio Technology: Combine modern computer-based so ware with radio technology. Importance: Counterintelligence and law enforcement must adapt to these evolving communica on methods. Countermeasures: Detect radio-based clandes ne communica ons and secure evidence.
2. Opera onal Scenarios where concealment and minimizing visibility are cri cal: Inside a Parked Car: o Example: Monitoring a nearby building while parked outside. Setup: Transmi er, receiver, and antennas posi oned out of sight from windows. Between Floors in an Office Building: o Example: Opera ng from the third floor to the first floor. Setup: Transmi er, receiver, and antennas posi oned out of sight carried out of site under clothing. Out in the Open: o Example: Providing regional communica ons support while deployed in the field. Setup: Transmi er, receiver, and antennas posi oned out of sight inside a backpack.
Remember, clandes ne antennas are designed to operate covertly, avoiding detec on by adversaries. Their success lies in striking a balance between effec ve communica on and maintaining secrecy with a right sized antenna. All these solu ons are enabled by the Broadband Alpha Loop.
112 East Commercial Street, Pleasant Hill, MO 64080

Documents / Resources

ALPHA ANTENNA Broadband Mini Loop Digital Mode HF [pdf] Instruction Manual
Broadband Mini Loop Digital Mode HF, Broadband Mini Loop, Digital Mode HF, Mode HF

References

User Manual

Broadband Mini Loop Digital Mode HF

Specifications

Product Usage Instructions

Deployment

Gain Estimation

Analysis