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BLA350 PLUS

Solid State Compact HF 300W Linear Amplifier

User Manual

Revision 1.0 April 2019

http://www.rmitaly.com

3

Costruzioni Elettroniche srl

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Summary of Contents for BLA350 PLUS

Page 1: ...BLA350 PLUS Solid State Compact HF 300W Linear Amplifier User Manual Revision 1 0 April 2019 http www rmitaly com 3 Costruzioni Elettroniche srl...

Page 2: ......

Page 3: ...ature and allows quick navigation of the amplifiers menu system Attention to correct operation and operating the amplifier within its operating capabilities will ensure optimum performance and many ye...

Page 4: ...ess can cause damage to the amplifiers output transistors and should be avoided at all costs Failure to follow this procedure may well result in damage to the amplifier that is not covered by the warr...

Page 5: ...selector 7 MAIN primary AC ON OFF switch 8 Output Power Meter 9 ON Amplifier active LED 10 TX Amplifier in Transmission LED 11 Warning Alarm LED Illuminates when there is an alarm condition excessive...

Page 6: ...PTT input _ connected to the transceiver however the default state of the BLA350 plus is that the PTT must be connected in order to amplify the signal It is always recommended especially for SSB and...

Page 7: ...eady present problems as 1 4 of a wavelength is 2 6m 28 5MHz If you have a 1 4 wavelength ground connection this will in fact present a high impedance and will impede the flow of RF to ground Antenna...

Page 8: ...de the BLA350 Plus is in Standby mode and will not switch to TX Amplify the incoming signal from the Transceiver if the transceivers PTT is pressed The LCD Display shows The first row indicates the st...

Page 9: ...t then press OK to save and exit the menu Int VOX Int Internal VOX when enabled allows the BLA350 Plus to be used if the transceiver does not have a PTT output There are two Options Disabled and Enabl...

Page 10: ...r in Watts RMS Front Panel LED s ON c Illuminates GREEN in Operate mode indicating that the amplifier is ready to use TX d Illuminates RED when the amplifier is in Transmis sion Warning e Illuminates...

Page 11: ...forward and reflected power at the antenna output and also at the input to the low pass filters The antenna VSWR pro tection features a lightning fast hardware protection circuit However both protect...

Page 12: ...Switch On Antenna VSWR 2 5 1 Filter Input VSWR 3 0 1 TX Freq 1 5MHz or 30MHz Excessive I P POWER Excessive TEMP TXCR in TX when amplifier is switched on Excessive VSWR Harmonic VSWR Check Antenna VSWR...

Page 13: ...following situation 1 S point on a receiver is usually approximately calibrated at 6dB so for example the difference between S5 and S7 is 2 S points so 12dB The difference between 10W and 300W is abo...

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