General description of the OM4001C commercial automatic amplifier
The automatic linear amplifier OM4001C is designed for all shortwave bands from 5 to 25 MHz all modes. It is equipped with a two pieces of ceramic tetrodes FU-728F.
Specification of OM4001C:
Frequency coverage: | (5.0 – 25.0) MHz with continous coverage |
Power output: | 3000 W in SSB/CW/RTTY and DIGI modes 100% duty cycle, 3000 W continous carrier 24 hours/day |
Drive Power: | 30 to 60 W for full Output Power |
Input Impedance: | 50 ohm, VSWR < 1.5:1 |
Output amplification: | 20 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: | < -50 dBc |
Tubes: | 2x FU-728F ceramic tetrode |
Cooling: | Centrifugal blower |
Response speed of AUTO tune: | less than 0.5 s within same BAND, less than 1 s if out of BAND |
Supported TRXs-CAT: | ICOM, ELECRAFT, KENWOOD, TEN-TEC ORION, YAESU, Flex Radios and Anan ( Apache Labs ) |
Power supply: | switchable voltages - 220/230/240 V for 50 Hz or 230/240/250 V for 60 Hz (or other primary voltages e.g. 200 V 50/60 Hz for Japan) |
Transformers: | 2 pcs. of toroidal transformer 3 kVA |
Dimensions: | 505 mm x 210 mm x 510 mm (width x height x depth) |
Weight: | 46.5 kg |
Protection circuits: | - SWR too high |
- Anode current too high | |
- Anode voltage error | |
- Screen current too high | |
- Screen voltage error | |
- Grid current too high | |
- Grid voltage error | |
- Heating voltage error | |
- Mistuning of Power Amplifier | |
- Temperature too high | |
- Soft start for protecting your fuses | |
- “switch-on blocking“ at opened amplifier | |
Indications: | 4.3" color touch screen display |
Features: | High level of protection |
Support automatic external ANT switching | |
Memory for faults and warnings, easy maintenance | |
Automatic idle current set-up (BIAS) – no need to adjust manually after changing the tubes | |
T/R system - QSK operation | |
Many operational parameters to display | |
REMOTE control via LAN connector |
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: 192.168.1.222
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.
For remote control and monitoring over LAN special software is needed. It is available free of charge; it can be downloaded from the following link: Remote control software version 3.38.
NOTE: For the correct functioning of the software, it is necessary to have accessible LAN ports 9999 and 10001.