| GENERAL | TK-D740 | TK-D840 | |
|---|---|---|---|
| Frequency Range | 136 - 174MHz | 406 - 470 MHz | |
| Max. Channels Per Radio | 32 | ||
| Number of Zones | 2 | ||
| Max. Channels Per Zone | 16 | ||
| Channel Spacing | Analog | 25/12.5 kHz | |
| Digital | 12.5 kHz | 6.25/12.5 kHz | |
| Power Supply | 13.6 V DC ± 15% | ||
| Battery Life | KNB-L1 (2,000mAh) | 10 hours / 6.5 hours | |
| (5-5-90/10-10-80 | KNB-L2 (2,600mAh) | 12.5 hours / 8.5 hours | |
| duty cycle) | KNB-L3 (3,400mAh) | 17 hours / 11 hours | |
| Operating Temperature | -22°F to +140°F (-30°C to +60°C) | ||
| Frequency Stability | ±2.0 ppm | ±1.0 ppm | |
| Dimensions (W x Hx D) Projections Not Included | 6.29 x 1.69 x 4.82 in. (160 x 43 x 122.6 mm) | ||
| Weight (net) | 2.42 lb (1.10 kg) | ||
| RECEIVER | TK-D740 | TK-D840 | |
| Sensitivity | Digital (1% BER) | 0.45 μV | |
| Digital (5% BER) | 0.3 μV | ||
| Analog (12dB SINAD) | 0.25 μV | ||
| Selectivity | Analog @25/12.5 kHz | 75 dB/65 dB | |
| Intermodulation | Analog | 73 dB | |
| Spurious Response | Analog | 75 dB | |
| Audio Distortion | Less than 5% distortion | ||
| Audio Output Power | 4 W/4 Ω | ||
| TRANSMITTER | TK-D740 | TK-D840 | |
| RF Power Output Power | 50-5 W | 45-5 W | |
| Spurious Response | 73 dB | 75 dB | |
| FM Hum & Noise | Analog 25/12.5 kHz | 45 dB/40 dB | |
| Audio Distortion | Less than 5% | ||
| Emission Designator | 16K0F3E, 11K0F3E, 7K60FXE, 7K60FXD | ||
*20 kHz is not included in the models sold in the USA or US territories. Analog measurements made per TIA 603 and specifications shown are typical. Digital measurements made per TIA 102CAAA and specifications shown are typical.
| MIL Standard | Methods/ Procedures | ||||
|---|---|---|---|---|---|
| 810C | 810D | 810E | 810F | 810G | |
| Low Pressure | 500.1/ I | 500.2/ I, II | 500.3/ I, II | 500.4/ I, II | 500.5/ I, II |
| High Temperature | 501.1/ I, II | 501.2/ I, II | 501.3/ I, II | 501.4/ I, II | 501.5/ I, II |
| Low Temperature | 502.1/ I | 502.2/ I, II | 502.3/ I, II | 502.4/ I, II | 502.5/ I, II |
| Temp. Shock | 503.1/ I | 503.2/ I | 503.3/ I | 503.4/ I, II | 503.5/ I |
| Solar Radiation | 505.1/ I | 505.2/ I | 505.3/ I | 505.4/ I | 505.5/ I |
| Rain* | 506.1/ I, II | 506.2/ I, II | 506.3/ I, II | 506.4/ I, III | 506.5/ I, III |
| Humidity | 507.1/ I, II | 507.2/ II, III | 507.3/ II, III | 507.4 | 507.5/ II |
| Salt Fog | 509.1/ I | 509.2/ I | 509.3/ I | 509.4 | 509.5 |
| Dust | 510.1/ I | 510.2/ I | 510.3/ I | 510.4/ I, III | 510.5/ I |
| Vibration | 514.2/ VIII, X | 514.3/ I | 514.4/ I | 514.5/ I | 514.6/ I |
| Shock | 516.2/ I, II, V | 516.3/ I, IV | 516.4/ I, IV | 516.5/ I, IV | 516.6/ I, IV |
| Dust & Water | IP54 |
|---|
*Testing requirements are: (a) Microphone (KMC-35/36) is connected; (b) cap is installed on D-sub 15pin connector; (c) external antenna is connected to antenna receptacle; and (d) neither the KCT cable nor speaker cable is connected.
