Communication Jamming
Klarwind's sparkle is all that reveals the spell
Spell profile
Primary casterShamal
Magic systemAncient Belka
Japanese name通信妨害
(Tsūshin Bōgai)
First app.A's (ep.9)

Communication Jamming (通信妨害 Tsūshin Bōgai) is a spell cast by Shamal to generate a field to interfere telepathy or other magical communications. It may also jam electronic or wireless waves.[1]

Communication is possible within the field through Klarwind, but even Shamal herself cannot establish communication with parties outside the field.


Like most supportive spells, its spell name in Ancient Belkan language is not known in canon sources.

Notable usesEdit

It is cast by Shamal in A's (ep.9) / The MOVIE 2nd A's when she helps hanging up the coats in the Uminari University Hospital, where she, Signum and Vita meet Nanoha Takamachi and Fate Testarossa, to hinder them from contacting the Administrative Bureau. On another hand, Zafira also cannot contact any of his fellow knights before he arrives at the battlefield.


  1. ^ Magical Girl Lyrical Nanoha StrikerS, DVD Vol.4 Booklet, Magic Dictionary.

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