12
T-680 Series
www.vegawireless.com
9900 East Baldwin Place • El Monte, California 91731-2294
Telephone: (626) 442-0782 • Toll-Free: 800-877-1771
Fax: (626) 444-1342 • CompuServe: 73513,1417
FaxBack: (626) 444-2017 • Toll-Free FaxBack: 800-274-2017
Printed in U.S.A.
©April 2000 Vega
T-680 Series Transmitter Specifications
Operating Frequency: 494-608, 614-806 MHz
Emission/Modulation: Direct FM, crystal controlled, 180KF3E; 75-kHz maximum deviation
RF Frequency Stability:
±
0.002%
RF Output Power: 150 mW, nominal or 40 mW nominal, depending on version
Spurious Radiation: 40 dB below carrier, minimum; typically 50 to 55 dB below carrier
Audio Processor: DYNEX®III
Acoustic Input Range: At maximum gain typically 112 dB SPL for onset of compression; maximum
acoustic input: 143 dB SPL
Controls: Power on/off, microphone on/off, microphone gain
Indicator: Audio compression
Modulation Limiting (Compressor): Per FCC requirements; “soft” compressor action, 25 dB range; typically system
distortion is less than 0.4% at 25 dB compression
Antenna: Patented* Internal dipole
Battery: 9-V alkaline, Duracell MN1604 recommended
Length: Varies by model, from 9.85 in (25 cm) to 10.75 in (27.3 cm)
Weight: Varies by model, from 9 oz (256 g) to 13.5 oz (385 g), including battery
UHF PRO PLUS System Specifications
with R-662A or R-662B receivers
Working Range: 1,700 ft under good conditions; 500 ft or more under typical conditions with
standard whip antennas
Audio Frequency Response: Depends upon microphone element and electronics; 90 Hz to 15 kHz,
±
1.5 dB, 120
Hz to 12 kHz,
±
0.75 dB (units include highpass filter to minimize handling noise;
extended low-frequency response available on special order)
Total Harmonic Distortion: <0.25%, 400 Hz, nominal input level
Intermodulation Distortion: <0.25% (SMPTE 60/7,000 Hz, 4:1)
Ultimate S/N: Microphone off: 101 dB (flat), minimum; 108 dB typical, A-weighted. Microphone
on: varies by element type and gain setting, typically over 100 dB (A-weighted) at
normal gain settings.
Dynamic Range: Varies by element type and gain setting; typically over 100 dB; over 125 dB with
gain adjustment
* Patent #4,344,184 issued August 10, 1982
