Had trouble with the link BM, so I googled, located, copied and pasted text here. Hope that is ok with all...
Texas Star 1600:
AM operation: 4 watts input will produce approximately 175 watts with plenty of
swing. To increase power output, use a modulator and adjust output on the modulator
to no more than 30 watts. 30 watts is maximum input for AM operation. A guideline for
any installation is to increase AM power until it begins to sound distorted, then
decrease it slightly. 30 watts input will produce approximately 850 watts output.
Modulators are made for AM use only- never SSB.
SSB operation: Turn on SSB delay switch. Any radio or amplifier used to drive this unit
should be class AB biased with an output of no more than 150 watts. 12 watts input will
produce approximately 450 watts output. 100 watts input will produce 1600 watts PEP
output as long as 13.8 VDC is maintained during keydown and the antenna is 50
ohms. if 13.8 VDC is maintained but output is low, connect output to 50 ohm dummy
load and test again. All Kenwood, Yaesu and Icom transceivers can run output directly
into this unit.
FM operation: This unit will accept up to 100 watts FM input. Keep transmissions to
less than 30 seconds.
4 watts in avg > 175 watts avg out at 48 amps current draw
10 watts in avg > 450 watts avg out at 72 amps current draw
20 watts in avg > 700 watts avg out at 92 amps current draw
50 watts in avg > 1000 watts avg out at 115 amps current draw
100 watts in avg > 1250 watts avg out at 125 amps current draw
installation: Use #2 electrical cable or two #6 wires in parallel to connect each
positive and negative lead directly to the battery. A second battery next to the unit
will help to keep the voltage up. Use RG-8U or RG-213U coax to connect output to the
antenna. Do not use RG-58U coax.
optional fan kit: plugs into the rear of the unit. the fans will turn on automatically
at 115 degrees fahrenheit and shut off at 110 degrees.
Additional Note: for absolute best performance and longevity, (dependability and reliability)
configure your drive levels and peak-to-carrier for anywhere from 1.5:1 to 4:1 (depending
on how you're measuring power, average or pep) and maintain heatsink temperature below 110
degrees fahrenheit. if you plan on completely ignoring this recommendation then i heartily
suggest that you purchase the fan kit. you'll need it.
Texas Star 1600:
AM operation: 4 watts input will produce approximately 175 watts with plenty of
swing. To increase power output, use a modulator and adjust output on the modulator
to no more than 30 watts. 30 watts is maximum input for AM operation. A guideline for
any installation is to increase AM power until it begins to sound distorted, then
decrease it slightly. 30 watts input will produce approximately 850 watts output.
Modulators are made for AM use only- never SSB.
SSB operation: Turn on SSB delay switch. Any radio or amplifier used to drive this unit
should be class AB biased with an output of no more than 150 watts. 12 watts input will
produce approximately 450 watts output. 100 watts input will produce 1600 watts PEP
output as long as 13.8 VDC is maintained during keydown and the antenna is 50
ohms. if 13.8 VDC is maintained but output is low, connect output to 50 ohm dummy
load and test again. All Kenwood, Yaesu and Icom transceivers can run output directly
into this unit.
FM operation: This unit will accept up to 100 watts FM input. Keep transmissions to
less than 30 seconds.
4 watts in avg > 175 watts avg out at 48 amps current draw
10 watts in avg > 450 watts avg out at 72 amps current draw
20 watts in avg > 700 watts avg out at 92 amps current draw
50 watts in avg > 1000 watts avg out at 115 amps current draw
100 watts in avg > 1250 watts avg out at 125 amps current draw
installation: Use #2 electrical cable or two #6 wires in parallel to connect each
positive and negative lead directly to the battery. A second battery next to the unit
will help to keep the voltage up. Use RG-8U or RG-213U coax to connect output to the
antenna. Do not use RG-58U coax.
optional fan kit: plugs into the rear of the unit. the fans will turn on automatically
at 115 degrees fahrenheit and shut off at 110 degrees.
Additional Note: for absolute best performance and longevity, (dependability and reliability)
configure your drive levels and peak-to-carrier for anywhere from 1.5:1 to 4:1 (depending
on how you're measuring power, average or pep) and maintain heatsink temperature below 110
degrees fahrenheit. if you plan on completely ignoring this recommendation then i heartily
suggest that you purchase the fan kit. you'll need it.
