Showing posts with label 88. Show all posts
Showing posts with label 88. Show all posts
Monday, November 17, 2014
Loading coil antena telex 88 108mhz
This post is for an antenna loading coil telex broadcast on freq. let us buy Simply put wrote specifically for the antenna loading coil at the store component telex, because loading the settings is still for freq 2 meter, we must slightly modify it. The trick is easy, just replace the existing loops. original about 5 convolution convolution continues we replace 10 with 1 to 1.5 mm diameter wire. for more details see the pictures. may be useful ..
Sunday, September 7, 2014
RF Fm 88 108 MHz 20W amplifier Wiring diagram Schematic
This Fm rf power amplifier has 2 transistors from Philips : BLV 10 and BLW 87. The 2 rf transistors work in class C and this fm amplifier has a total gain of 21dB ( 100 X ) and efficiency 55 – 65%. One low pass filter with 9 components ensures 60dB rejection on the second harmonic. There is no need for tune-up to cover the whole 88 – 108 MHz FM frequencies.
RF Fm 88 108 MHz 20W amplifier Circuit Diagram
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