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
Devin, KM4ENW, asks how to ground his 2m/70cm radio in his RV. I show how to use the frame of the RV as a good counterpoise. Read more
“My good friend Joel, KC4WZB, loaned me his brand new Yaesu FTdx10. When I say loaned, I mean he picked it up at Ham Radio Outlet and brought it... Read more
Here we take a look at the brand new L-Band Patch antenna from RTL-SDR Blog. This antenna is designed to work with Inmarsat, Iridium and GPS signals. Read more
Review
How do I Ground My Transceiver in a Recreational Vehicle
FTdx10 & FT-991A SSB Receiver Comparison
RTL-SDR BLOG L-BAND Patch Antenna Version 2 – Inmarsat – Iridium – GPS
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
Image credit: Otava Tuomi. Early last year, when the outbreak of coronavirus (COVID-19) first pushed much of the world into lockdown, one traditional... Read more
A 5-year, $9.3 million National Science Foundation (NSF) grant will allow the University of Alaska Fairbanks (UAF) Geophysical Institute to establish... Read more
Donald de Riggs, J88CD, on the Caribbean island of St. Vincent, says that on April 13, the 42nd anniversary of the 1979 eruption of the La Soufriere v... Read more
News
Home but never alone: Celebrating World Amateur Radio Day
National Science Foundation Funds Creation of Research Lab at Alaska’s HAARP
St. Vincent Radio Amateurs on Alert During Volcano Emergency
