AKG 3002M21040 - AKG SPR4500 Antenna

AKG 3002M21040 Antenna for AKG SPR4500 (IEM Receiver, Band Trimmable)

The AKG 3002M21040 is the original antenna for the AKG SPR4500 bodypack receiver in the IVM4500 in-ear monitor system. It is a 1:1 OEM replacement designed to restore the receiver's RF performance when the original antenna is damaged, bent, or lost. The SPR4500 operates on several frequency bands (BD1, BD3, BD4, BD7, BD8, BD9) , and AKG specifies that this antenna be trimmed to a specific "L" length for each band, ensuring correct tuning and sensitivity.

Since the SPR4500 operates in antenna diversity , the unit uses two identical units; for consistent results, it's recommended to replace them in pairs and adjust both to the same length for the operating band. The 3002M21040 is a factory-terminated flexible rod for direct mounting on the receiver; cutting is simple and follows the AKG length chart .

Main features

• Original AKG replacement part for SPR4500 (IVM4500) receiver.
• Antenna that can be cut to the length “L” specified by frequency band.
• Band compatibility : BD1, BD3, BD4, BD7, BD8 and BD9.
• Ready to install : 1:1 fit into the receiver, no adjustments required.
• Diversity Use : The SPR4500 employs two paired antennas .

Product benefits

• Restore the RF range and stability of the IEM link by adjusting the antenna to its actual band.
• Professional maintenance : OEM part that preserves receiver sensitivity and minimizes signal dropouts.
• Rapid intervention : direct replacement and cut to size following the official table.

Frequently Asked Questions

What devices is it compatible with?
Exclusive to the SPR4500 beltpack receiver of the IVM4500 system.

How many antennas does the SPR4500 have?
Two, because it works with diversity . It's recommended to replace both and adjust them to the same length.

How do I know how much I should cut?
AKG provides the “L” length per band. Examples from the official table: BD1 (650–680 MHz): 111 mm , BD3 (720–750 MHz): 90 mm , BD4 (760–790 MHz): 135 mm , BD7 (500–530 MHz): 111 mm . For all other bands, follow the manufacturer’s table.

Description for projects

OEM antenna for AKG SPR4500 IEM receiver, reference 3002M21040 . Antenna can be cut to fit band (BD1, BD3, BD4, BD7, BD8, BD9); reference lengths: BD1 111 mm, BD3 90 mm, BD4 135 mm, BD7 111 mm. Direct replacement; the receiver uses two diversity antennas.