RM Italy LA 250/V Quick Start Manual Download Page 11

 

Summary of Contents for LA 250/V

Page 1: ...x10A 5x20mm Fast Input RF Power 1 20W All modes Output RF Power 200W 1dB Gain Compression Maximum bypass power Amplifier off 50W Input VSWR 1 1 1 5 1 Output VSWR Maximum 2 5 1 Protection Reverse Polar...

Page 2: ...T cable if required to the transceivers PTT OUTPUT The Amplifier may be used without this connected however con nection is recommended for SSB operation PTT is Active Low 5 Make sure that the amplifie...

Page 3: ...ut is not con nected 4 Amplifier ON OFF switch 5 ON LED 6 TX LED illuminates when amplifier is in transmission 7 Alarm indicator flash for warning solid colour for protection Rear Panel 1 RTX SO239 RF...

Page 4: ...s active low which means that shorting it s terminal to ground will trigger the amplifier to enter transmit This is the way nearly all modern trans ceiver PTT outputs are configured either open collec...

Page 5: ...ved with 10 to 12W input The cross sectional area of the cables used to connect the amplifier to the PSU should not be less than 6mm or 10 AWG They should also be kept as short as practicably possible...

Page 6: ...ter TMP Displays the current heatsink temperature Antenna Considerations Most VHF antennas for the 144 146 MHz Amateur 2m band are generally pre tuned or require some slight adjustment after initial i...

Page 7: ...mission in these modes will depend on numerous factors such as if the amplifier fitted with the cooling fans how good the ventilation around the amplifier is if there is sufficient space for freely fl...

Page 8: ...overdriv ing the amplifier will not actually help your signal to be stronger you will in fact cause higher levels of distortion which will make your signal less intelligible at the distant receiver s...

Page 9: ...25 50 75 100 125 150 175 200 225 250 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Output Power W Input Power W Typical Output Power vs Input Power Pout W 0 2 4 6 8 10 12 14 140 141 142 143 144...

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Page 12: ...arranty commencing from the date of purchase The original purchase receipt will be required for any claim This warranty does not cover aesthetic damage or damage to the RF power transistors from incor...

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