2KW+ 2x LDMOS BLF188XR BOARD LINEAR AMPLIFIER over legal limit board
I have revised my design to improve matching and IMD figures. The board features a high power transmission line transformers wound on stacked ferrite toroids.For lower IMD, lower saturation. And higher power output the board employs special quality coax yielding highly efficient impedance transformation. The dual sided 3 oz. And is 13 cm x 26 cm in size. All critical RF capacitors are ATC for best rf performance. Efficient feedback circuitry ensures stable broadband operation. I will supply all details upon request. Bias is regulated on-board and thermally fused for extra protection. 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 160-6m. Slight trade off to et the right balance in power/bandwidth so there is. About 10% 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. And air is directed on fins as well on top of board to cool the magnetic I. Was able to run the amps for a long time.
Tested the 2kw board with 2x BLF188XRS on a full copper heat sink with. Clamping the devices and not just using 4-40 screws at the tabs Results are. Very good and when ran at 1600w out F2 and F3 were way down and very known. 10-11 MHz distortion of LDMOS (known physical property probably to the way the device is made).Over all a very stable and powerful board. A good power supply that can be used with my amps or boards can be found here. Or a nother type that can be used with abit lower amperage here. Please verify your address during checkout. We are not responsible for any wrong or undeliverable addresses.
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. This item can be shipped worldwide.
- Brand: 4z4rb
- MPN: 2kw blf188
- Max. Output Power: 2400W
- Frequency Band(s): HF
- Supported Modes: FM
- Country/Region of Manufacture: Israel
- Country of Manufacture: Israel