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Product Code:
522
Desktop Microphonet
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The Model 522 is a dynamic base station microphone
designed especially for radio communications, paging, and
dispatching systems. Its cardioid (unidirectional) pickup pattern
suppresses unwanted background noise -- the type of noise generated
by other dispatchers working nearby, by ventilating equipment, or
by office machines in the same area. It also eliminates or reduces
feedback in public address paging applications.
522 with push-to-talk switch
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| Features |
- Dual impedance(19 to 300 ohms or
High)
- lmpedance change switch for
convenient change-over
- Finger-tip control bar (locking
or non-locking action) to actuate microphone circuit and an
external relay or control circuit
- Long-life switch to satisfy
rigorous requirements of communications and paging
systems
- Sturdy, high impact ARMO-DUR
base and microphone case
- Adjustable microphone
height
- Dependability -- under all
operating conditions
- Conversion kit available for
Monitor/Transmit switching
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| Specifications |
- Type : Dynamic
- Frequency Response : 60 to 11,000
Hz
- Polar Pattern : Cardioid
(unidirectional) - uniform with frequency, symmetrical about
axis
- Impedance
Dual. Microphone rating impedance is 150 ohms (260 ohms actual) for
connection to microphone inputs rated at 19 to 300 ohms and "High"
for connection to high-impedance microphone inputs. Switch is in
high-impedance position as supplied. To change impedance, see
sections on lmpedance Selection and Connections in User
Guide
- Sensitivity (AT 1,000 HZ)
Open Circuit voltage*
Low : -57.5 dB (1.3 mV)
High : -38.5 dB (12 mV)
*(1 Pa = 94 dB SPL)
- Switch
Press-to-Talk Switch - locking or nonlocking operation to actuate
microphone circuit and an external relay or control circuit.
Microphone circuit normally shorted in both high and low
impedance.
Impedance Selection Switch - double-pole double- throw slide switch
in microphone base to provide either high- or low-impedance
operation.
- Cartridge Shock Mount : Internal
rubber vibration-isolator
- Cable : 2.1 m (7 ft)
four-conductor, two conductors shielded non-detachable
- Case : Two-tone gray ARMO-DUR®
with dull-chrome-plated steel screen
- Dimensions : See User
Guide
- Net Weight : 736 grams (1 Ib 10
oz)
- Shipping Weight : 1020 grams (2 Ib
4 oz)
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