ACOM 1400S 1200 W LDMOS
Solid-state linear amplifier 1.8–54 MHz, 1200 W PEP or continuous carrier, LDMOS, 7" touch control and Ethernet remote control
The ACOM 1400S is a solid-state linear amplifier covering all bands from 160 to 6 metres, delivering 1200 W output both PEP and continuous carrier, with no mode restrictions.
Product description
It is controlled from a remote control unit (RCU) with a 7" colour touch display: band changes are guided and require no special skills. Connected via CAT, the amplifier follows the transceiver frequency; without CAT, the internal frequency counter detects the input signal and changes band by itself.
It works with any transceiver: all it needs is a "ground on TX" keying line and less than 50 W of drive. The broadband input has an SWR below 1.2 (typically 1.1) from 1.8 to 54 MHz, with no retuning.
The final stage uses a 65 V LDMOS transistor. The built-in web interface and the RJ45 Ethernet port allow remote control over the Internet from a browser.
The protection circuits are always active; data for 55 parameters relating to the last 28 protection events are kept in memory for diagnosis. The built-in switch-mode power supply with PFC accepts 90–264 V AC without switching and draws sinusoidal current, useful with unstable mains or generators. Built-in RF filters ensure electromagnetic compatibility with the other equipment in the station.
Key features
PEP or continuous carrier, no mode limits.
Via CAT or internal frequency counter.
Colour remote control unit.
Web interface and RJ45 Ethernet.
Power supply and bands
On 90–132 V AC mains the output power is reduced to 600 W. For the 60 and 6 metre bands, refer to the band plans and regulations of your country.
Technical specifications
| Bands | 160, 80, 60, 40, 30, 20, 17, 15, 12, 10, 6 m (1.8–54 MHz) |
| Output power | 1200 W ± 0.5 dB PEP or continuous carrier (200–264 V AC) · 600 W at 90–132 V AC |
| Drive | typically 50 W for 1200 W (gain 14 ± 1 dB) |
| IMD3 | better than 31 dB below rated PEP |
| Harmonics and spurious | −60 dB (HF) / −70 dB (50 MHz) or less |
| RF connectors | UHF (SO-239), 50 Ω unbalanced |
| Input SWR | < 1.2 (typical 1.1), 1.8–54 MHz, no retuning |
| Bypass SWR | < 1.1 |
| Load SWR | up to 1.5 at full power · up to 3 with proportional reduction |
| Final stage | 65 V LDMOS transistor |
| Power supply | 100–240 V AC ± 10%, 50–60 Hz, single-phase, PFC ≥ 0.95 |
| Current consumption | up to 3100 VA (200 V AC) · up to 2000 VA at 600 W (100/120 V AC) · standby < 1 VA |
| Controls | KEY-IN and KEY-OUT on RCA, minimum sequencing 10 ms |
| RCU cable | 1.5 m |
| Dimensions and weight | Amplifier 372 × 418 × 170 mm, 14.6 kg · RCU 179 × 118 × 86 mm, 0.73 kg |
| Operating environment | −10…+40 °C, humidity up to 95% at 35 °C, up to 3050 m a.s.l. |
| Compliance | CE (safety and EMC) |
HamRadioShop | Linear amplifiers
