Munitions

HS30 jamming round

Also known as
  • HS-30
  • HS 30

HS30 jamming round is a Bulgarian 152 mm single-use artillery radio jammer marketed by Samel-90. Public product material says the shell is fired like ordinary HE cargo ammunition, separates over the target area, deploys a parachute and antenna, and then jams tactical HF/VHF radios for about an hour; 2A65 ammunition listings also name HS30 among the projectiles that howitzer can fire.

HS30 jamming round, 152 mm electronic warfare artillery round, Munitions
Image source: Samel-90 Artillery Jammers
Profile / Specs

Profile

Origin
Bulgaria
Built by
Samel-90
Type
152 mm electronic warfare artillery round
Designed
Mid-1980s concept lineage
Produced
Publicly documented by 2019

Specifications

Caliber
152 mm
Function
Single-use active barrage radio jammer
Frequency range
1.5 to 120 MHz
Frequency sub-bands
8 overlapping sub-bands
Operating time
60 +/- 5 minutes
Jamming radius
Minimum 500 m
Carrier shells
122 mm, 130 mm, 152 mm, and 155 mm artillery cargo shells; 120 mm mortar mine carrier listed separately
Battery
Lithium
Operating temperature
-40 C to +50 C
Storage period
10 years
Firing Weapons

Public ammunition references tie HS30 to the 2A65 Msta-B howitzer.

Firing weaponWeapon typeFiring evidence
2A65 Msta-B, 152 mm towed howitzer, Artillery2A65 Msta-B152 mm towed howitzer

Army Guide's 2A65 ammunition listing names the HS30 jamming round among the projectiles the howitzer can fire.

Sources: Army Guide 2A65 MSTA-B

How The Round Works

Samel-90 describes the shell as a one-shot artillery jammer that is fired like ordinary HE cargo ammunition, then separates over the target area and starts transmitting only after the payload opens.

StageDocumented detailWhy it matters
Band selectionThe jammer line covers 1.5 to 120 MHz in eight overlapping pieces.That spans tactical HF and VHF radio bands without changing the basic shell concept.
LaunchThe shell is fired using ordinary artillery tables and the same procedure used for HE or other cargo shells.Artillery crews can employ it with normal guns and established fire control.
In flightA time fuze triggers separation, then a parachute system slows and stabilizes the payload.The round is designed to deploy the jammer over the target area rather than at the muzzle.
Effect windowThe jammer switches off automatically after the assigned operating time, listed as 60 +/- 5 minutes in family specifications.It is meant for a finite tactical disruption window, not persistent area denial.

The product is presented as a short-duration tactical jammer, not a persistent area system.

Timeline

HS30 jamming round Key Events

  1. Samel-90 is established

    Arabian Defence says Samel-90 began in 1964 as a Bulgarian military equipment plant before expanding into artillery jammers and other defense electronics.

    Sources: Arabian Defence Samel-90 PLC

  2. Bulgarian RF-jamming shells appear

    Armada International says the Bulgarian Army pioneered RF-jamming shells in the mid-1980s, establishing the concept behind Samel-90's artillery jammer line.

    Sources: Armada Radio Silence

  3. Public coverage highlights the 152 mm shell family

    Armada International's December 2019 coverage describes Samel-90's publicity material for 152 mm HF/VHF jamming artillery shells.

    Sources: Armada Radio Silence

Media

HS30 jamming round Images

HS30 jamming round, 152 mm electronic warfare artillery round, Munitions - view 1
Source: Samel-90 Artillery Jammers
HS30 jamming round, 152 mm electronic warfare artillery round, Munitions - view 2
Source: Samel-90 Artillery Jammers
HS30 jamming round, 152 mm electronic warfare artillery round, Munitions - view 3
Source: Samel-90 Artillery Jammers
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Sources

Samel-90 Artillery JammersPublisher: Samel-90 | Note: Supports the artillery-jammer family background, the 1.5 to 120 MHz band, eight overlapping frequency segments, ordinary-HE firing procedure, parachute and antenna deployment, about 60-minute operating time, carrier-shell calibers, manufacturer context, and image provenance. | Accessed: 2026-07-13Armada Radio SilencePublisher: Armada International | Note: Supports the mid-1980s Bulgarian Army origin note and the public 152 mm HF/VHF jamming-shell background. | Accessed: 2026-07-13Armatec Artillery JammersPublisher: Armatec | Note: Supports artillery-jammer family specifications including 1.5 to 120 MHz coverage, eight sub-bands, minimum 500 m jamming radius, 60 +/- 5 minute operating time, lithium battery, operating-temperature range, storage period, and listed carrier calibers including 120 mm mine carriers. | Accessed: 2026-07-13Arabian Defence Samel-90 PLCPublisher: Arabian Defence | Note: Supports Samel-90's 1964 establishment and manufacturer background. | Accessed: 2026-07-13Army Guide 2A65 MSTA-BPublisher: Army Guide | Note: Supports the 2A65 ammunition listing that names the HS30 jamming round among projectiles the howitzer can fire. | Accessed: 2026-07-13