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10.   Cooling technique 

 
The integrated axial blowers are temperature controlled and provide sufficient 
cooling during long time operation at full output power with minimum noise 
level. During the TX period the airflow through the RF box is increased by 
higher speed of the cavity blower which is noticeable by a slight noise increase. 
Especially during long term operation with MS or WSJT this is essential for 
avoiding rapid temperature rise of  balun and output filter coils. 
 
To achieve best airflow for cooling, the air in- and outlets must not be covered. 
Do not operate the amplifier in close proximity to heaters and radiators. If 
thermal shut down occurs you should wait until the device temperature 
decreases sufficiently before switching on the amplifier again. Please read also 
our “Safety instructions” and “Electrical connections”

 
 

ATTENTION ! 

 

This device is not designed for 100% duty cycle at rated output power.  
Only an intermediate operation including a sufficient recovering time for 
cooling is permitted. Max. duration for a once non stop TX-period @30°C 
or 86°F is 5 minutes.  
 

 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
   

Summary of Contents for HLV-1000

Page 1: ...1 HLV 1000 Instruction Operations Manual ...

Page 2: ...instructions 5 4 Electrical connections 6 5 Warranty 7 6 Front panel operation 8 7 Protection circuits 9 8 Receive Transmit switching 10 9 Remote control 11 10 Cooling technique 12 11 Block diagram 13 12 Adjustment of protection thresholds 14 13 Control circuit schematic 15 14 tbt ...

Page 3: ... EC and 99 5 EC EN 301 783 1 V1 1 1 2000 09 EN 301 783 2 V1 1 1 2000 09 EN 301 489 1 V1 6 1 2005 09 EN 301 489 15 V1 2 1 2002 08 EN 60950 1 2006 All necessary test procedures have been successfully passed Manufacturer and authorized representative BEKO ELEKTRONIK Am Längenmoosgraben 1a D 85221 Dachau GERMANY This declaration has been accomplished under unique reponsability of the manufacturer BEKO...

Page 4: ...6 db The internal modulated power limit is kept to 1200 watts It s design is based on Freescale s rf transistor MRFE6VP61K25H Optimized output matching including h3 phase compensation and elliptic low pass filter ensure best efficiency highest 1dB compression and high spectral purity It is essential that the driving source has a narrow phase noise and high spectral purity The output signal of an a...

Page 5: ...4 F and at humidity of less than 85 In order to avoid malfunction caused by condensation you will have to wait at least one hour before start of operation and until the condensation has been removed 6 To prevent electrical shock do not remove the cover before disconnecting the mains plug 7 The bottom openings are used as a cooling air inlet and the rear side outlet to exhaust the inside generated ...

Page 6: ...chieve optimum driving level and maximum output power all load and source impedances should also be 50 Ohms Deviations will automatically cause limitation of the specifications and shifting of the threshold voltages of the protection circuits Operation with no load connected is not allowed 5 The RF connectors are N type Only high quality connectors with PTFE insulation must be used Neglecting will...

Page 7: ...test CE conformity and FCC rules We grant a 2 years warranty including parts and labour beginning from the date of purchase Unauthorized use or improper handling will invalidate all claims on warranty The device is protected by an invisible seal against opening Damage of the seal will invalidate the warranty Warranty is also excluded if damages are caused by 1 Overdrive with power levels 75W or wi...

Page 8: ...the preamplifier When returning to receive it turns the preamplifier on after switching off the RF power unit The supply voltage for the use of an external preamplifier is available on pin 4 of the CONTROL jack at the rear panel It is short circuit protected by use of a ptc fuse and supplies 15 volts 750 mA For preamps that can accept voltage feed via the coaxial cable wire pin 4 to pin 2 inside t...

Page 9: ...rm 7 Protection circuits The HLV 1000 s internal control circuit supervises the output load condition any overdrive of the input stage and the thermal status of heat sink and power supply unit If the amount of reflected power exceeds 100 watts the protection circuit shuts off the RF unit immediately and switches the drive power to bypass mode This also happens with overdrive levels of more than 15...

Page 10: ...er contact of the rear sided AUX jack to reliably control a connected transceiver Any potential at the inner conductor is switched to ground In essence your amplifier provides a built in multi level sequencer which provides an alternate means to key your radio last When the amplifier PTT is activated usually via a foot switch the preamp voltage is dropped first internal relays are switched the RF ...

Page 11: ... can easily be activated by an external switch wired to ground Output power can be monitored 100 of output power is equal to 10V DC on Pin 5 Use the 7 pin DIN plug that was delivered with your amplifier and connect the other end to a suitable connector to your transceiver or other switching unit ...

Page 12: ... rise of balun and output filter coils To achieve best airflow for cooling the air in and outlets must not be covered Do not operate the amplifier in close proximity to heaters and radiators If thermal shut down occurs you should wait until the device temperature decreases sufficiently before switching on the amplifier again Please read also our Safety instructions and Electrical connections ATTEN...

Page 13: ...13 11 Block diagram ...

Page 14: ... are too sensitive and need some slight correction In the picture below all trimpots incl their functions are shown Turning the slots clockwise is equal to or upward direction and verse vice Readjustment should be done very carefully otherwise the effect of protection is cancelled ...

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