4 x BLF188XR LDMOS BOARD AMPLIFIER VERY HIGH POWER
A very high power solid state linear amplifier board. This board is designed for four LDMOS-FET's BLF188XR operating in a push-pull circuit. These boards are the result of a long R&D and many experiments into.
LDMOS FET high power linear amplifiers. And using 4 devices was not a simple design task. Each node in the PP circuit uses 2 devices so. Without real strain on devices.I have revised my design many times with. Too to improve matching and IMD figures. The board features a high power transmission line transformer wound on stacked ferrite toroids. For lower IMD, lower saturation. The dual sided 3 oz. And is 14 cm x 27 cm in size. All critical RF capacitors are ATC and silver tabs rf caps from Murata for best rf performance. Efficient feedback circuitry ensures stable clean broadband operation. Imax up to 125A \. Bias is regulated on-board and thermally compensated. Thermal tracking of bias is also provided on board. This is a populated board but without the active LDMOS devices. The board is supplied ready for your devices to be dropped in. These are very high power boards. The board has enough "headroom" to cover up most minor operating mistakes. The LDMOS devices with the "XR" are Extremely rugged devices!! The amplifiers have very good IMD since the devices are designed to loaf along at the designed power level. They are not pushed to the limit or to saturation! I was asked a few questions by members so here is my added reply. Amps are made for 160-10 and 6m. Slight trade off to et the right balance in power/bandwidth so there is. About 20% drop on 6. As for duty cycle If the boards are mounted as needed on. A proper heat sink with a good sized copper heat spreader with 10mm thickness.
Look at input VSWR curve I have added. All below 1:1.5.
A good power supply that can be used with my amps or boards can be found. Please verify your address during checkout. We are not responsible for any wrong or undeliverable addresses.Items will be checked carefully before sent out. Thank you and 73's. The item "4 x BLF188XR LDMOS BOARD AMPLIFIER VERY HIGH POWER" is in sale since Monday, July 22, 2019. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "4z4rb" and is located in Israel.
- Frequency Band(s): HF
- Country of Manufacture: Israel
- Model: 4 x blf188
- Country/Region of Manufacture: Israel