| Frequency Selection | 256 frequencies in 100 kHz steps |
| RF Power Output | 100 mW (nominal) |
| Pilot Tone | 25 to 32 kHz; 5 kHz deviation |
| Frequency Stability | ± 0.002% |
| Deviation | ± 75 kHz (max) |
| Spurious Radiation | 90 dB below carrier |
| Equivalent Input Noise | -120 dBV (A-weighted) |
| Input Level | Nominal 2 mV to 300 mV, before limiting. Greater than 1 V maximum, with limiting |
| Input Impedance | Dynamic Mic: 300 ohms
Electret Lavaliere: Input is virtual ground with servo adjusted constant current bias
Line Level: 2.7 kOhms |
| Input Limiter | Dual envelope "soft" limiter; greater than 30 dB range |
| Gain Control Range | 43 dB; semi-log rotary control |
| Modulation Indicators | Dual bicolor LEDs indicate modulation of -20, -10, 0, and +10 dB referenced to full modulation |
| Frequency Response | 32 Hz to 20 kHz (+/-1 dB) |
| THD | 0.2% (typical) |
| SNR | SmartNR OFF: 103.5 (no limiting), 108.0 (w/limiting)
SmartNR NORMAL: 107.0 (no limiting), 111.5 (w/limiting)
SmartNR FULL: 108.5 (no limiting), 113.0(w/limiting)
(Note: The dual envelope "soft" limiter provides good handling of transients using variable attack and release time constants. Gradual onset of limiting in the design begins below full modulation, which reduces the measured figure for SNR without limiting by 4.5 dB) |
| Dynamic Range | 125 dB (with full Tx limiting) low frequency roll-off (input) |
| Adjustment | -18 dB/octave; adjustable from 35 to 150 Hz |
| Controls | Two position "ON-OFF" power switch
Audio input gain knob
Low frequency roll-off pot on side panel
Two 16-position rotary switches adjust frequency |
| Audio Input Jack | Switchcraft 5-pin locking (TA5F) |
| Antenna | Detachable, flexible wire supplied
50 ohm port allows connection to test equipment |
| Battery | Precision compartment auto-adjusts to accept any known 9 volt battery |
| Battery Life | 5 hours (alkaline); 10 hours (lithium) |
| Emission | Emission Designator: 180KF3E |
| Dimensions | 3.17 x 2.48 x 0.84" (80.5 x 63.0 x 21.3 mm) |
| Weight | 6.98 oz (198 g), (including battery & antenna) |
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