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Arcturus Defense Solutions Signal Jammer Grenade SJG-3

A throwable device that emits a powerful broadband electromagnetic jamming signal in a 30-meter radius for 5 minutes, disrupting all wireless communications, sensor systems, and neural interface external connections within range. The SJG-3 is used for tactical communications denial — thrown into an area before an assault to prevent defenders from calling for reinforcements or coordinating response. The jamming signal is powerful enough to disrupt hardened military communications and causes painful interference in neural interfaces, which most users experience as a sudden, overwhelming burst of static in their augmented senses.

Murmuration Systems → Arcturus Defense Solutions

name

Arcturus Defense Solutions Signal Jammer Grenade SJG-3

brand name

Arcturus

product name

Arcturus Defense Solutions Signal Jammer Grenade SJG-3

aliases

SJG-3
Comm Kill
Static Bomb
Dead Air

category

electronic_warfare

manufacturer

Murmuration Systems

tier availability

Tier 3+

legality

Restricted — military and authorized operations

specifications

jamming radius	30 meters
duration	5 minutes
frequency coverage	100 kHz to 60 GHz — total broadband
effect on comms	Complete wireless denial
effect on neural interface	Painful static interference
info	temporary sensory disruption; 2-second delay
effect on sensors	Blinding of all electronic sensor systems
weight	0.25 kg
activation	Pin-pull
power	Single-use capacitor discharge

story hooks

Three SJG-3 grenades were detonated simultaneously in a Tier 3 commercial district, creating a 90-meter dead zone during which a precision robbery was executed — no communications in or out for five minutes.
A modified SJG-3 has been developed that specifically targets neural interface frequencies while leaving other communications functional — it incapacitates augmented personnel while unaugmented attackers remain unaffected.

related entities

Aybek Alvarez-Okonkwo
The Burnline

physical description

visual profile	Compact spherical grenade with a slightly flattened top and a spring-loaded pull ring. Resembles a classic fragmentation grenade but with smooth, featureless surfaces interrupted only by a central activation mechanism. Industrial and purposeful.
dimensions	8.5 cm diameter sphere, 10 cm height including ring assembly
weight description	250 grams — easily pocketable and throwable; fits in palm or tactical vest pouch
primary material	Hardened polycarbonate shell with titanium-reinforced ring assembly and contact points
finish	Matte textured grip surface to prevent slipping when wet; subtle diagonal ribbing for ergonomic throw
color scheme	Matte charcoal gray body with electric blue accent striping along three equatorial bands; stainless steel pull ring with blue retention clip
interface elements	Single pull ring (non-replaceable); three small indicator LEDs (amber, green, red) positioned around the equator; minimal tactile feedback on activation
distinctive features	Three bright electric-blue horizontal bands that glow faintly under low light — identifying the jamming spectrum visually Textured grip zones in raised geometric patterns for positive grip under gloved operation A small Φ-denomination cost marking etched near the base (Tier 3+ pricing) Faint warning text in micro-print: 'NEURAL INTERFACE HAZARD' and 'BROADBAND EMISSION CLASS-3' Slightly warm to the touch due to capacitor pre-charge state
manufacturer markings	Murmuration Systems logo (stylized flock-of-birds silhouette) stamped on top; 'SJG-3' designation and batch serial number on side; regulatory compliance icons for GLMZ electronic warfare standards
condition typical	Clean and ready-to-deploy from inventory, with protective pull-ring clip engaged. Shows minor handling wear in field use but remains fully functional. Slight condensation or dust coating possible depending on storage conditions.

image prompt

Close-up product photography of the Arcturus SJG-3 signal jammer grenade on a worn steel tactical workbench, surrounded by scattered electronic components and jamming spectrum analyzer readouts. The grenade is centered with its electric blue bands catching cool neon-blue accent lighting, emphasizing the high-tech threat nature. Dramatic side-lighting creates sharp shadows. Blurred tactical gear and GLMZ urban skyline visible through an industrial window in the background. Neo-noir electronic warfare aesthetic with high contrast and cool color temperature. --ar 3:2 --v 6

visual prompt