A600 LDMOS linear amplifier kit 600W 1.8-72MHz for QRP FT-817, KX2, KX3, X5105
Over 600W from 1.8MHz to 54MHz, 450W at 70MHz. 24dB typical gain, needs less than 5W drive. Uses modern MRF300 LDMOS transistors.
Onboard sensors for supply voltage, instantaneous current draw, heatsink temperature, forward and reflected RF power, drive RF power. Connectors for a separate Low Pass Filter bank.
Compact size, PCB is just 190x100mm. Can be set up to take up to 100W drive. NXP Homebrew RF Design Challenge award winner.
This is an Advanced level kit and assumes you have a good understanding of electronics. The PCB is supplied with the surface-mount components already installed, but some of the parts supplied in this kit will require assembly and soldering. You will also have to source a power supply and a large heatsink, drill and tap the heatsink and build your choice of input-output switching circuitry.
Recommendations are included in the provided Assembly Instructions. The Sensor Port provides sensor outputs for measuring circuit parameters such as supply voltage, supply current, heatsink temperature, forward power and reflected power. They are all analog signals in the 0-5V range and can be easily interfaced with a microcontroller of your choice (eg: Arduino) to implement display or protection routines.
The signals are described in the provided Assembly Instructions. To use this amplifier on the air and meet legal requirements, it is recommended you use a bank of switchable Low Pass Filters and make sure you dont overdrive it beyond the design output power. 190100mm PCB board with installed SMD parts. Pair of MRF300AN & MRF300BN LDMOS RF power transistors. All required additional parts in separate bags.
RF transformers & inductors in separate bags (require winding). See all details on qrpblog. The item "A600 LDMOS linear amplifier kit 600W 1.8-72MHz for QRP FT-817, KX2, KX3, X5105" is in sale since Sunday, May 10, 2020. This item is in the category "Mobile Phones & Communication\Radio Communication Equipment\Ham/Amateur Radio\Ham Radio Amplifiers". The seller is "razvanfatu" and is located in Watford. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.
- Model: A600 v2.0
- Band: RF
- Amplifier Class: AB1
- Max. Output Power: 600 W
- Supported Modes: AM
- MPN: A600KITv20
- Brand: QRPblog