看看需要不。两张sd1407的功放板 [复制链接]

一张板子上有两个sd1407的管子。  单管输出28v ·125w
上有输入衰减模块 。 估计可以直接上qrp电台。此板子上标有输入24v电压。 实际输出功率 不详
一张板子300元一张   支持淘宝交易  http://item.taobao.com/item.htm?spm=686.1000925.1000774.9.SS3JEK&id=19382454946
二手设备购买请谨慎。不包好坏。  嘻嘻

淘宝旺旺不大上线。请qq、电话直接联系
sd1407 sd1407.pdf (105 K) 下载次数:30 pdf

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好的。 封帖

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150W FM Transmitter Amplifier
Posted on Saturday, March 30, 2013   •   Category: FM Transmitters




This is 150W FM transmitter amplifier for 88-108MHz band. The amplifier has two stages using BLF244 mosfet transistor for the first stage which requires 0.5 - 1Watt of RF input to get about 20watts to drive the final stage SD1407 which can push nearly 200 Watts on this design. This design is more or less broadband however I added two variable capacitors after each stage for optimum matching and power output. Make sure the trimmer and the capacitors after the final stage SD1407 are a high voltage types with at least 200V rating. The power on this amplifier can be varied by adjusting the bias voltage using the white pot to the BLF244 mosfet. I added a zener diode onto the bias supply to protect the transistor from too much bias voltage.

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