1
MADE IN SLOVAKIA
WWW.OM-POWER.COM
OM Power, s.r.o. 93030 Bá
č
126,
SLOVAKIA
Contact : +421 905 321 410
e-mail
: [email protected]
: om-power@om-
power.com
OM2501A
( OM3501A)
SHORTWAVE
POWER AMPLIFIER
Page 1: ...1 MADE IN SLOVAKIA WWW OM POWER COM OM Power s r o 93030 B 126 SLOVAKIA Contact 421 905 321 410 e mail om power om power com e mail om power om power com OM2501A OM3501A SHORTWAVE POWER AMPLIFIER...
Page 2: ...NERAL DESCRIPTION 7 3 1 HF Compartment 7 3 2 Power Supply 9 3 3 Safety Devices 9 4 INSTALLATION 9 4 1 Grounding 10 4 2 Coaxial Cable 10 4 3 Control Cable 11 4 4 Cooling 11 5 OPERATION 12 5 1 OM2501A F...
Page 3: ...nging OM2501A connection settings 40 7 4 2 Setting up in the Remote software 41 7 4 3 Remote Control without own IP Address behind a router 42 7 5 OM2501A firmware upgrade 43 7 6 Icom connection with...
Page 4: ...in SSB CW on HF bands 3000 W 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 O...
Page 5: ...t manually after changing the tube Three programmable working modes of the centrifugal blower turbine axial blower Full QSK Many operational parameters to display Easy transport due to detachable HV t...
Page 6: ...O SHORT OR BYPASS safety switch under upper lid The OM2501A amplifier should not be used in a WET or HUMID environment or be exposed to RAINFALL Do not turn the amplifier ON without having connected t...
Page 7: ...user is to take proper actions to mitigate this disturbance Read this manual carefully Fallow all of instructions during installation and operation to avoid damage to the amplifier not covered by man...
Page 8: ...are separate This enables the amplifier to be tuned exactly and makes it possible to easily return to the previously set positions after band changes Top view on the opened OM2501A Tetrode FU728F Blow...
Page 9: ...etting is 230 VAC If the AC voltage in your network is 220 or 240 Volts you need to set the correct transformer tap before first starting the PA See part 7 1 for more information Other primary voltage...
Page 10: ...With poor grounding you may risk damaging your equipment have problems with TVI BCI or possible distortion of your transmitted signal 4 2 Coaxial Cable The output of the transceiver is to be connecte...
Page 11: ...your TCVR set the delay to 15ms please The amplifier is equipped with safety devices which ensure that the output relay is not switched under power mistakenly hot switching KEY IN RCA Phono Input sig...
Page 12: ...ould result in damage to the high voltage circuits We do not recommend changing antennas during a transmission Hot switching When you decide to have a short operating break We recommend placing the am...
Page 13: ...nformation and control settings while the PA is still OFF BAND Touch the left side of BAND button to go down touch the right site to go up The band information is displayed above the button ANTENNA Tr...
Page 14: ...ious menu settings for CAT NO CAT ANTENNA DISPLAY EBS CLEAR user settings for one or all bands BLOWER mode and other INFO Type of supported TCVR and working frequency are visible on the display AUTO L...
Page 15: ...M3501A detects transmit frequency from the input signal With the input signal frequency changing the PA automatically reacts and tunes itself to optimal output parameters If NO CAT is used we recommen...
Page 16: ...green squares To disable some square select port up down touch SET for antenna name and then select band left right Press SET Four types of antennas for four different bands were disabled Black square...
Page 17: ...ress ENT Use next lines and set brightness and sound volume use up down and left right Confirm with SAVE Type of supported TCVR and working frequency are visible on the display AUTO LED is ON Type of...
Page 18: ...n Next lines are for EBS Electronic Bias Setting ON OFF and for EBS level selection We recommend EBS ON See next comment for more details Type of supported TCVR and working frequency are visible on th...
Page 19: ...re not speaking loud enough some syllables can be cut off In such a case you should turn OFF the EBS The next two settings allow deletion of the manual user settings of the amplifier tunings for a sin...
Page 20: ...imum allowed power in bypass mode is 200 Watts The bypass RF power is displayed if PA is in standby mode To turn PA ON press ON OFF button on the front panel black one and hold it abt 1 second PA will...
Page 21: ...d SEGMENT buttons In this mode exact frequency will be read from RF input and PA will set up on it automatically COM LOST appears if CAT was defined but TCVR is not connected with the PA CAT cable See...
Page 22: ...and press SHOW A new button is visible SET Umain Press it Type of supported TCVR and working frequency are visible on the display AUTO LED is ON Type of supported TCVR and working frequency are visib...
Page 23: ...n FREEZE the screen and or allow constant monitoring Three different bar graphs can be defined using BARG1 BARG2 or BARG3 buttons Press BARG1 Green graph may show one of the user selectable 8 monitore...
Page 24: ...ET EBS1 AUTO and press SET PA will automatically set 20mA on the tube When finished successfully you will see SET EBS1 AUTO OK on the screen Type of supported TCVR and working frequency are visible on...
Page 25: ...This feature allows user to switch OFF the SWR This feature allows the user to switch OFF the SWR protection We recommend to set it ON SWR protection circuit will stay active max allowed SWR is 3 1 If...
Page 26: ...OPERATE mode Note the light indicator on the touch Screen has changed to OPERATE Press MENU Now try to press PTT foot switch for example We are now in TRANSMIT mode without RF Note the new TRANSMIT l...
Page 27: ...2 current stays in the 0 to 20mA range At that time maximum efficiency and optimal linearity are achieved This applies to each power application It is not necessary to retune the PA if we decrease the...
Page 28: ...se that the PA cannot deliver the full power 2500W or some of the protection circuits may be automatically activated In such cases we recommend doing a manual tuning M TUNE The best indication of prop...
Page 29: ...utput power and the PA Screen current is inside 0 20mA then press the SAVE button Notice 1 If the tuning process takes more than 1 minute allow for a short break to prevent temperature overloading of...
Page 30: ...tion See the table above for warning and fault conditions When a fault condition occurs during the tuning or operation of the amplifier the safety circuits will block transmitting The amplifier stays...
Page 31: ...the amplifier except the tube or fuses Substitution of parts may void intrinsic safety Manufacturer s contacts OM POWER s r o 930 30 B 126 SLOVAKIA Email om power om power co 6 2 Fuse Replacement The...
Page 32: ...rocedure must be done 6 4 Cleaning To prevent damage to the amplifier surface and plastic components do not use aggressive chemicals for cleaning Do not open the amplifier for cleaning Outer surface c...
Page 33: ...one side of primary winding is conected to N pole Wire marked with proper voltage connect to L pole AC voltage is marked at every black terminals AC selector range can be changed according to the spec...
Page 34: ...Flex Radio 6xxx series connection using SmartSDR CAT Choose the control port in the SmartSDR CAT window that you will use to control the power amplifier It must be an existing serial port a hardware...
Page 35: ...s 2 and 3 are crossed NOTE A USB adapter equipped with a genuine FTDI chip set is a must Knock off FTDI chip sets do not work properly Now connect the DB9 end of the null modem cable FTDI adapter to t...
Page 36: ...ficial OM Power website http www om power com downloads The software allows the following controls Switch the PA ON and OFF Switch between STBY and OPERATE Switch between preprogrammed antennas Read a...
Page 37: ...37 Connection setting Set up TCP IP address and port Connect disconnect to OM2501A...
Page 38: ...38 View last 20 PA faults Anennas Settings Screen selections Minimal view NOTE To return to the normal view from the minimal view just right click with your mouse...
Page 39: ...39 Normal view Advanced view Fine tune screen It is possible to retune the PA TUNE and LOAD remotely See page 31...
Page 40: ...wser and enter the OM2501A current IP address default is 192 168 1 222 An authentication window will show up Leave the fields empty and click OK Open the Network menu and change the IP address Subnet...
Page 41: ...click Apply Settings in the main Menu 7 4 2 Setting up in the Remote software In the Remote Control software open the Manager Settings and enter the IP Address and Port number that you set in point 7...
Page 42: ...Forwarding Port Forwarding or something similar As Server IP enter the OM2501A IP Address 192 168 1 222 if you haven t changed it or the one you changed to in point 7 5 1 Private port should be 10001...
Page 43: ...u are ready to work with OM2501A over the internet 7 5 OM2501A OM3501A firmware upgrade Download the firmware upgrade software and latest firmware file for the OM2501A OM3501A from the official OM Pow...
Page 44: ...Select the Firmware tab and click on the LOAD BIN button Choose OM2501A Vxxx bin file in the OM2501A folder Type of supported TCVR and working frequency are visible on the display AUTO LED is ON Type...
Page 45: ...o to the PC and the PIC Loader software and press button the SEND TO LINE button Type of supported TCVR and working frequency are visible on the display AUTO LED is ON Type of supported TCVR and worki...
Page 46: ...disappears At the end you will return to the main screen of OM2501A Switch PA OFF disconnect the TCVR serial cable and you are ready to use the OM2501A with the new firmware Type of supported TCVR and...
Page 47: ...47 7 6 ICOM connection with OM2501A OM3501A AC 1 GND OUT LAN COM port RS 232 PC to ANT ANT2 ANT1 SEND REMOTE TRX ICOM REAR VIEW OM2501A PC TCVR CI V IN KEY ANT BPF CONTROL INPUT OUTPUT F2 F1 AC 2...
Page 48: ...OM2501A OM3501A AC 1 OM6BPF BCD decoder GND OUT LAN REAR VIEW OM2501A PC TCVR CI V IN KEY ANT BPF CONTROL INPUT OUTPUT F2 F1 AC 2 ANT switch Bandpass filter OUTPUT INPUT TX GND BAND DATA CAT COM port...
Page 49: ...in out TCVR connector DB 9 male RS232 connection with TCVR For CAT communication connect pin 2 RX D pin 3 TX D and pin 5 GROUND CI V connector Use CI V connection for communication with ICOM type tran...
Page 50: ...CAT communication connect pin 2 TX D pin 3 RX D and pin 5 GROUND KEY IN RCA connector Input signal PTT switching voltage current 5V 2mA KEY OUT RCA connector Output signal PTT maximum switching of 30V...
Page 51: ...inhibit transmit 0 V if transmit is allowed Pin 13 No connect Pin 14 No connect Pin 15 No connect ANT BPF Connector D sub 15 male Pin 1 ANT data D output BCD code bit 3 for antenna switching Pin 2 AN...
Page 52: ...value Antenna port 0 0 0 0 0 UNDEFINED 0 0 0 1 1 ANT 1 0 0 1 0 2 ANT 2 0 0 1 1 3 ANT 3 0 1 0 0 4 ANT 4 0 1 0 1 5 ANT 5 0 1 1 0 6 ANT 6 0 1 1 1 7 ANT 7 1 0 0 0 8 ANT 8 1 0 0 1 9 ANT 9 1 0 1 0 A ANT 10...
Page 53: ...V TCVR 3 3 3 3 3 3 J5 CONTROL BOARD DISPLAY J4 J3 J2 J14 J10 J9 KEY IN KEY OUT LOAD TUNE J12 Ext bl K2 K3 Kl 8 Kl 7 K1 Kl 3 Kl 4 Kl 2 Kl 1 K1 J5 J8 TR2 TR1 AC24V AC2 AC1 J9 J6 J1 Cover SW OM 2501A Blo...
Page 54: ...switch configuration If you want to use an antenna with higher SWR this SWR protection can be switched off page 25 But reflected power will stay checked max 350W Power In is too high Reduce input pow...
Page 55: ...lly due to improper setting of the primary voltage on the transformer page 33 In normal condition Uh readings should be 9V 0 3V or 27 1 3V depends on tube Cooling error Check blower rotation Main blow...
Page 56: ...rm a Factory Reset only if absolutely necessary to clear abnormal behavior because personalized settings mainly CAT communication with TCVR antenna switch settings and any USER settings must be re inp...
