Friday, August 15, 2014

For this installment, I’d like to share some information from Michael Pettersen at Shure:

Comparison of PGXD to GLXD and to ULXD

For customers that ask how to differentiate the Shure Digital wireless systems, here is a concise list formulated by Product Technical Support Engineer, Cris Tapia:

Frequency Band

PGXD: 902-928 MHz*

GLXD: 2.4 GHz

ULXD: 470-814 MHz*

*Country Dependent

Maximum Simultaneous Systems Under Optimal Conditions

PGXD: 5

GLXD: 8

ULXD: >40

Local RF interference can reduce these numbers.
Operating Range Under Optimal Conditions

PGXD: 200 feet

GLXD: 200 feet

ULXD: 300 feet

Local RF interference can reduce these distances.
Transmitter Power Source

PGXD: Two AA cells

GLXD: Shure SB902 Rechargeable

ULXD: Two AA cells or Shure SB900 Rechargeable

Receiver Antennas

PGXD: Permanently attached ¼-wave

GLXD: Permanently attached ¼-wave

ULXD: Removable ½-wave

Rack Mount

PGXD: URT2 accessory (not included)

GLXD: URT2 accessory (not included)

ULXD: Hardware included

Signal Latency

PGXD: 3.5 ms (milliseconds)

GLXD: 4 ms minimum; 7.3 ms maximum

ULXD: 2.9 ms

 

And here’s a nice little tidbit about batteries:

Are the Shure rechargeable battery packs worth the seemingly high retail price? Based on ongoing research by Rick Waller, Shure rechargeable packs used in handheld transmitters have been cycled over 700 times and are still at 90% health. Divide a battery pack retail price of $100 by 700. The cost per use-cycle is $0.14 – far less than the cost of two disposable AA alkaline cells – and 1,400 depleted AA cells are not in a landfill.

Hopefully that will give you some helpfull information, and as always feel free to give me a call if you have any other questions. Take it easy,