TH-25AT
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GENERAL
| Type | Amateur VHF transceiver |
|---|---|
| Frequency range | USA TX: 144-148 MHz RX: 144-148 MHz |
| Tuning steps | 5 / 10 KHz |
| Frequency stability | ±? ppm @ -20 to +50°C (-4 to 122°F) |
| Mode | FM |
| Channels / memory management | 14 regular Channel 13 and 14 can also store odd splits RAM storage with lithium battery backup |
| Repeater shift / offset | ±600 KHz |
| Power supply | 5.8-12 VDC (Depending on battery pack)or 5.8-16 VDC external |
| Current drain / power consumption | RX: 16-100 mATX: 0.4-1.2 A |
| Antenna impedance / connector | 50 ohm / BNC |
| Dimensions (W*H*D) | 58*138*30 mm (2.28*5.43*1.18"), with PB-6 |
| Weight | 400 g (14.11 oz), with PB-6 |
| Other features | Backlit display. DTMF keypad. |
RECEIVER SECTION
| Receiver system | Double conversion superheterodyne 1st IF: 16.9 MHz 2nd IF: 455 KHz |
|---|---|
| Sensitivity | 0.16 uV (12 dB SINAD) |
| Selectivity | 12 KHz (-6 dB)28 KHz (-40 dB) |
| Image rejection | — |
| AF output power / speaker | 200 mW at 10% distortion / 8 ohm |
| External speaker connector | 2.5 mm |
TRANSMITTER SECTION
| RF output power | HighLow 2 m:2.5-5 W500 mW The high power setting depends on voltage / battery pack. |
|---|---|
| 2 m | 2.5-5 W |
| Modulation system | Reactance |
| Max FM deviation (Factory set) | ±5 KHz |
| Spurious emissions | Better than -60 dB |
| Microphone impedance / connector | 2 Kohm / 3-conductor (3.5 mm) |
| Microphone input level | — |
MISCELLANEOUS
| Manufactured | Japan, 1987-1989 (Discontinued) |
|---|---|
| Additional info | — |
| BC-9 BC-10 BC-11 BT-6 DC-1 with PG-2V DC-1 with PG-3E HMC-2 HS-7 HS-8 PB-5 PB-6 PB-7 PB-8 PB-9 RA-3 SC-14 SC-15 SC-16 SMC-31 TSU-6 WR-1 | Wall charger. For PB-6 and PB-7 Compact charger Rapid charger Battery case. Six R6 / AA batteries DC adapter and cable DC adapter and cable Headset with VOX/PTT Micro headphones Micro headphone NiCd battery pack. 7.2 V, 200 mAh NiCd battery pack. 7.2 V, 600 mAh NiCd battery pack. 7.2 V, 1100 mAh NiCd battery pack. 12 V, 600 mAh NiCd battery pack with built-in charger. 7.2 V, 600 mAh Telescopic antenna for 2 m Soft case. For use with PB-5 Soft case. For use with PB-6 and BT-6 Soft case. For use with PB-7, PB-8 and PB-9 Speaker-microphone CTCSS/PL encoder/decoder unit Water resistant bag |
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