User's Manual

RF Technology Page 11
4 SPECIFICATIONS 4.5 Antenna Impedance
4.5 Antenna Impedance
Nominal load impedance is 50 Ohms VSWR 1.5:1 or better. The IP
•
PA500BH will
operate with a VSWR of 3:1 at all phase angles. The forward power will reduce as
reverse power rises above acceptable limits.
4.6 Output Power
Nominally 50/100 Watts, adjustable from 1 to 120 Watts. Gain is typically 17dB.
4.6.1 Transmit Duty Cycle
The transmitter is rated for 100% duty cycle (continuous operation) at 100W output
for air temperature below 50C. De-rate linearly above 50C to 50% at 70C.
4.7 Spurious and Harmonics
Less than 1 µW at any harmonic of the transmit frequency (-90dBc).
4.8 Heatsink Temperature
The heatsink temperature can rise to 80C without affecting operation, except for de-
rating based on air-temperature as noted in section 4.6.1 above. Shutdown will occur at
heatsink temperatures exceeding approximately 85C.
4.9 ALC Output
ALC circuits are internal to the power amplifier and no output is required for operation.
(Note: legacy compatibility with Eclipse1 Series is supported without the ALC connection)
4.10 Connectors
4.10.1 RF Input
The RF drive is delivered via a BNC connector. The maximum power that should be
applied to this connector is 4 Watts.
E2-IP-PA 500BH