General description of the OM1700A+ automatic amplifier
The automatic linear amplifier OM1700A+ is designed for all short wave amateur bands from 1.8 to 29 MHz (including WARC – bands) + 50 MHz and all modes. It is equipped with a ceramic tetrode 4CX1500B.
Specification of OM1700A+:
| Frequency coverage: | Amateur bands (1.8 – 29.7) MHz including WARC + 50 MHz |
| Power output: | 1700 W in SSB/CW on HF bands, 1300 W on RTTY, 1000 W FT8/FT4 1500 W CW/SSB on 50 MHz, 800 W FT8 on 50MHz |
| Drive power: | 40 to 60 W for full output power |
| Input impedance: | 50 ohm VSWR < 1.5 : 1 |
| Output amplification: | 15 dB |
| Output impedance: | 50 ohm unbalanced |
| Maximum output SWR: | 3:1 |
| SWR protection: | Automatic switching to STBY when reflected power is 350 W or higher |
| Intermodulation distortion: | better then -32 dBc |
| Suppression of harmonics: | min. -50 dBc (better than -70 dBc on 50 MHz) |
| Response speed of AUTO tune: | less than 0.5 s within same BAND, less than 3 s if out of BAND |
| Supported TRXs-CAT: | ICOM, ELECRAFT, KENWOOD, TEN-TEC ORION, YAESU, Icom transceive protocol using by microHAM devices – CI-V OUPUT, Flex Radios and Anan ( Apache Labs ) |
| Tube: | 4CX1500B ceramic tetrode |
| Cooling: | Centrifugal blower + axial blower |
| Power supply: | Switchable 220/230/240 V – 50/60 Hz or other primary voltages (for example 200 V 50/60 Hz for Japan) |
| Transformers: | 1x toroidal transformer 3 kVA |
| Protection circuits: | - SWR too high |
| - Anode current too high | |
| - Screen current too high | |
| - Grid current too high | |
| - Mistuning of power amplifier | |
| - Temperature to high | |
| - Soft start for fuse protection | |
| - “switch –on blocking“ at opened amplifier | |
| Indications: | 4.3" color touch screen display |
| Features: | - support automatic external Antenna switching |
| - Memory for faults and warning, easy maintenance | |
| - Automatic set-up anode current (BIAS) – no need to manual adjust after changing the tube | |
| - Automatic set-up of blower speed according to temperature | |
| - T/R System: QSK operation with built-in vacuum RF antenna relay | |
| - Remote control - connector for LAN connection | |
| - The smallest and lightest 1700 W automatic PA on the market | |
| Mechanical parameters: | 390 mm x 195 mm x 370 mm (width x height x depth) |
| Weight: | 24 kg |
LAN Connection
Power amplifier is interfaced to LAN via XPORT made by Lantronix (type XP1001000-05R). More info can be found at www.lantronix.com .
Default factory settings of XPORT are:
IP address: 192.168.1.211
Mask: 255.255.255.0
Gateway: 192.168.1.1
These are strictly default settings. You can modify any of these by going to XPORT web GUI via your web browser. We do not recommend changing any other parameters of the XPORT interface as loss of communication can be caused by doing so. There is no default user name or password. It is highly recommended to secure web interface with username and password.