PT 4000

UHF bodypack transmitter with magnesium body
30 MHz wide UHF band with up to 1200 selectable frequencies
Backlit display and jog switch for ease of use
Operates for up to 15 hours on dry batteries, 12 hours on optional BP 4000 battery pack and displays remaining battery life
Optional remote mute switch

The PT 4000 is a professional bodypack transmitter with a rugged die-cast magnesium body. The 30 MHz wide UHF band provides up to 1200 selectable frequencies and several preset frequency banks for various countries make it easy to set up a multichannel system. A backlit display makes it very easy to tune the PT 4000 to the same frequency as the SR 4000 receiver. A pilot tone system continuously transmits transmitter status data including MUTE switch position and the remaining battery life to the receiver. Integrated charging contacts let you charge the optional BP 4000 battery pack without having to remove it from the transmitter.
An optional remote mute switch allows the user to mute the transmitter without having to fumble for the on-board mute switch if the transmitter is hidden in the clothes.

Optional microphones for PT 4000

System components for multichannel systems

HiQnet Area

The wireless system shall operate over a 30 MHz UHF frequency range in one of 6 bands from 680 to 863 MHz, with a wide range of possible frequency settings. The wireless microphone system shall incorporate factory-optimized sets of both transmission and receiving frequency modules that are programmed into both transmitters and receivers. Each frequency set shall comprise a 30 MHz UHF band and offer up to 1,200 discrete operating frequencies within that band, with transmitter power not exceeding 50 milliwatts. Both handheld and bodypack type trans-mitters shall be provided. The bodypack transmitter shall accommodate both microphone and line level inputs. The transmitters shall operate with a companding system that is complemented by the receiver, providing an A-weighted system dynamic range in excess of 120 dB. The transmitters shall indicate input overload via an LED indicator and on a backlit display battery lifetime shall be displayed in hours as well as the transmitting frequency. Handheld transmitters shall have a maximum diameter of 39 mm and a length, including antenna, no greater that 239 mm. The wireless microphone system shall be the AKG Acoustics Model WMS 4000.

Carrier frequency range	650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820, 835 to 862 MHz
Audio bandwidth	35 to 20,000 Hz
THD	typ. <0,3 %
Signal/noise ratio	120 dB (A)
Modulation	FM
Selectable channels	1200
Max. channels for multichannel operation	> 50
RF output power	50 mW max. (ERP)
Battery life	2 AA size dry batteries: 15 hours typical; BP 4000 rechargeable battery pack: 12 hours typical
Dimensions	70 x 90 x 25 mm (2.8 x 3.5 x 1.0 in.)
Net weight	320 g (11.3 oz.)
Patent(s)	Remaining battery life (Patent no. AT 408.280, GB 2.349.230, US 6,344,730)