Blf188xr 1kw Linear Amplifier Module On Pure Copper Heat Sink
1 KW LDMOS-FET LINEAR AMPLIFIER MODULE. ON 2.5Kg PURE COPPER HEAT SINK. This module with the , BLF188XR/XRS was created to enable the use of the latest LDMOS-FET's devices. This amp board is using the latest state of the art XR devices from NXP (former PHILIPS).
The board is double sided plated G-10 copper (high current board). Board is tested and adjusted for class AB of operation. The XR is extremely rugged. It will withstand 65:1 VSWR!!!!!!
(full short at full power). A temperature regulated bias circuit and a high power transmission line transformer for low loss and wide bandwidth are provided. Also n egative feedback for better IMD and gain flatness is used. Input VSWR is optimized as seen on a network analyzer picture. Always better than 1: 1.5 over the entire bandwidth.
A full technical paper with all instructions is provided with the board. Here are some spec for the board with BLF188XR. Quiescent drain current 250 mA typ. Peak CW power 1300 W. Efficiency at CW Peak power(1415W) 81.4%. Power Gain at P3dB 29.1dB!! I drain at P3dB 31.6A. Vbias: 12V for keying the amp.
Gain is very high so with FB I lowered the gain to get far better stability. The cores are large and many thus an.
Average rise of cores temperature is also minimized. As a result I have not. Seen core failure or saturation. And far away from saturation point.
Of many cores gives better IMD and far better results than using A single core. Or tube as seen in ON9CVD study on Magnetic s and output transformers for amplifiers. Bias is thermally protected with thermal cut off fuse on the copper. The heat sink is BONDED FIN type made of pure copper with over 2.5 Kg of weight!
Tom W6KAN built an amp using my board you can see it here. " Little boy -An HF LDMOS amplifier ".
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 undelivered addresses. Items will be checked carefully before sent out. Thank you and 73's. The item "BLF188XR 1KW LINEAR AMPLIFIER MODULE ON PURE COPPER HEAT SINK" is in sale since Thursday, May 25, 2017. 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
- Model: 1kw module
- MPN: 1kw module
- Max. Output Power: 1400 W
- Frequency Band(s): HF
- Supported Modes: AM
- Country/Region of Manufacture: Israel
- Country of Manufacture: Israel
