HF Power Amplifers 500 W & 1 kW HF Codan 3061 and 3062
CODAN HF Power Amplifiers are reliable, affordable and designed for use with our CODAN NGT HF transceivers. The CODAN 3061 and 3062 provide 500W PEP and 1000W PEP output power respectively, and are suitable for voice and data operation.
CODAN NGT HF Transceiver interface
CODAN NGT HF transceivers provide users with a simple interface to control and operate the HF Power Amplifiers. Fault conditions are automatically detected and reported to the user via the CODAN NGT interface. The CODAN HF amplifiers automatically switch to stand-by mode when they are not being used, or when the attached CODAN NGT HF transceiver is powered off.
Continuous mode operation
The CODAN HF amplifiers are rated for 100% continuous operation in all modes for either voice or data applications.
Advanced switched mode power supplies are used in the final amplifier output stage to maximise efficiency of the amplifiers and reduce heat. This is achieved by varying the supply voltage on the RF transistors depending upon the current load and modulation.
Protection and backup
HF Power Amplifiers are fully protected against all load conditions and excessive heat sink temperatures. They are capable of operating with loads of VSWR of up to 3:1 with reduced output power. When excessive VSWR or over temperature occurs, the amplifiers switch to by-pass mode to prevent permanent damage. In by-pass mode, the full output power of the attached CODAN NGT HF transceiver is available as a backup to keep the station operational and on-air.
Antenna tuner interface
The CODAN HF amplifiers provide an interface to control an external antenna tuner or coupler. The attached NGT HF transceiver automatically performs a tune when a new transmit frequency is chosen.
Tuning operates on low power, then the high power output engages after the tune is completed.
Front panel indicators
The front panel indicators provide a comprehensive display of fault conditions including internal fault, VSWR and over temperature. An LED bar graph is provided to display either the PEP output power or supply current status.
The HF amplifiers have extensive heat sinks with fan forced airflow cooling. For increased reliability and durability, the fans are thermostatically controlled and operate on two speeds depending on the heat sink temperature.
Both CODAN HF amplifiers and associated power supply units are designed for use in 19" rack mount configurations and are 5RU high. Front air exhausts allow the amplifiers to be easily installed in virtually any type of 19" rack.
RF power output
500 W PEP ±1 dB, 300 W average
1 kW PEP ±1 dB, 600W average
1.6 to 30 MHz
–10 to +60°C
100%: normal speech over full temperature range
100%: all modes up to maximum ambient of 45°C
100–240 V AC ±10%, 50/60 Hz single phase
800 VA (two-tone), 900 VA maximum
1.6 kVA (two-tone), 1.8 kVA maximum
Safe under all load conditions
Bypass to 125W PEP from transceiver in the event of excess
VSWR, excess heatsink temperature & internal fault conditions
Better than 60 dB below PEP
Better than 32 dB below PEP
Fan forced front panel exhaust
Thermostatically controlled dual speed
Amplifier (5RU 19" rack): 22.2 x 48.3 x 41.0 cm (H x W x D)
Power supply (5RU 19" rack): 22.2 x 48.3 x 41.0 cm (H x W x D)
Amplifier: 15.4 kg, Power supply: 6.7 kg
Amplifier: 23.6 kg, Power supply: 10.0 kg