OM-Power 4001A Fully Automatic
HF Amplifier
General description and the advantages of the OM4001A amplifier
The OM Power model OM4001A is an automatic power amplifier, designed for use on all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) and all modes. It is equipped with a two pieces of ceramic tetrode FU728F.
The advantages of OM4001A:
-
Full compatibility with
- – ICOM
- – YAESU
- – ELECRAFT
- – Ten-Tec Orion
- – Kenwood
- – Icom transceive protocol using by microHAM devices –CI-V output (MK II, MK2R, MK2R+, etc)
- – Flex Radio Series 6xxx
- – Apache Labs Anan
- RF sensitive Band and Frequency switching, for use with radios which do not have CAT
- Automatic switching between bands
- Automatic tuning with the band according to segments
- Automatic switching of band pass filter – BAND DATA output compatible with YAESU radios (BCD code)
- Automatic switching of the antenna switches – maximum number of antennas is 10, controlled by BCD output code
- Remote control via PC Windows Application
Specification of OM4001A:
Frequency coverage: | Amateur Bands 1.8 – 29.7 MHz including WARC |
Power output: | 4000+ W in SSB and CW on HF bands, 3000W in RTTY and DIGI modes |
Input Power: | Usually 40 to 60W for full Output Power |
Input Impedance: | 50 Ohm, VSWR < 1.5 : 1 |
Power Gain: | 17 dB |
Output Impedance: | 50 Ohm unbalanced |
Maximum Output SWR: | 3:1 |
SWR protection: | Automatic switching to STBY, when reflected power is 350W or higher |
Intermodulation distortion: | -32dB below nominal output |
Suppression of harmonics: | < -50 dBc |
Tubes: | 2x FU728F Ceramic tetrode |
Cooler: | Centrifugal blower + Axial blower |
Response speed of AUTO tune: | less than 0,5s within same BAND ,less than 3s if out of BAND |
Power supply: | switchable 2 x 220/230/240V – 50 Hz one or two phases |
Transformers: | 2 pcs of toroidal transformer 3kVA |
Dimensions: | 485 x 200 x 455mm (width x height x depth) |
Weight: | 46 kg |
Protection circuits: | – VSWR 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 PA | |
– Temperature too high | |
– Soft start for protecting your fuses | |
– “switch-on blocking “ at opened amplifier | |
Indications: | 4.3″ colour touch screen display |
Features: | High level of protection |
Memory for faults and warnings, easy maintenance | |
Automatic set-up anode current (BIAS) – no need to adjust manually after changing the tubes | |
Three programmable working modes of the axial blower | |
Full QSK with silent relay | |
Many operational parameters to display | |
The smallest and lightest 4000 W Power Amplifier on the market |
LAN Connection
Power amplifier is interfaced to LAN via XPORT made by Lantronix (type XP1001000-05R). More info can be found atwww.lantronix.com .
Default factory settings of XPORT are:
IP address: 192.168.1.222
Mask: 255.255.255.0
Gateway: 192.168.1.1
Our website will be updated soon with more details
This week Jonathan goes through his top 10 must-have accessories for the IC-705! Read more
Frank Howell, K4FMH, followed up his two-part National Contest Journal (NCJ) series, “The Demographics of Contesting,” with a post to his Social Circu... Read more
New from Yaesu, the FTDX-10 HF Transceiver – today I’ve invited Sean, W9FFF, from the Ham Radio Dude channel to go though all of the menu... Read more
Review
TOP 10 ACCESSORIES FOR IC-705
Traditional Amateur Radio Contesting Faces a Demographic Cliff
Yaesu FTDX-10 Menu and Feature Overview with W9FFF Ham Radio Dude
Brand new from Wouxun is the KG-UV8H Handheld, which features a different screen than earlier models, an 8-watt output power, and a 3200mAH battery. L... Read more
Pending future FCC action, amateur radio secondary use of the 3.3 – 3.45 GHz band segment may continue indefinitely. The FCC, as part of a lengthy... Read more
“For years the Baofeng UV-5R has been maligned as non-compliant with FCC regulations and a real spreader of spurious emissions. Further, it woul... Read more
VHF
Wouxun REVEALS the KG-UV8H Dual Band 8-watt HT Radio
Amateur Radio Gets a Partial Reprieve on 3.5 GHz
Dump the UV-5R and Get the GT-5R
The Volunteer Monitor (VM) Program is a joint initiative between ARRL and the FCC to enhance compliance in the Amateur Radio Service. This is the Marc... Read more
ARISS-USA, a Maryland nonprofit corporation, has earned recognition from the US Internal Revenue Service (IRS) as a Section 501(c)(3) charitable, scie... Read more
Updated band plan valid: from 4 April 2021 Contest Zone (CW and SSB) Uplink area 2400.370 – 2400.490 MHz Downlink area 10489.870 – 10489.990 MHz Of co... Read more
News
March 2021 Volunteer Monitor Program Report
ARISS USA Gets IRS 501(c)(3) Recognition
Contests on QO-100 allowed