High Gain UHF Booster

Electronics & Electrical Engineering Topics
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Nipuna
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Re: High Gain UHF Booster

Post by Nipuna » Mon Apr 19, 2010 4:02 pm

Please tell me Another circuit
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Reginald
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Re: High Gain UHF Booster

Post by Reginald » Tue Apr 20, 2010 6:13 am

The one added by Magneto is the best and the most commonly used one. Can you put some photos of the circuit board you made. Would like to have top and bottom view clearly. Without these, we can't trust that you made the right thing (or even made it at all ;) ).

This is another one.
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This is an UHF band TV antenna preamplifier circuit With 15dB gain to build easily. It is formed based on BF180 UHF Transistor. The first stage is an band pass filter constructed by the C1, CV1, L1, L4, C7 and C3, the second stage is a base-common voltage amplifier with low input impedance to match. Build the L1 ~ L4 as air core coil to obtain high Q-Factor.

After assembling, pack it into a proper metallic box and connect the ground of the circuit to the box to reduce noise effect.
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Nipuna
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Re: High Gain UHF Booster

Post by Nipuna » Tue Apr 20, 2010 10:23 am

I didn't make it. But I tried a booster that i Bought from the market. When I have time i will Build that circuit.

Thanks
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Reginald
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Re: High Gain UHF Booster

Post by Reginald » Tue Apr 20, 2010 2:25 pm

Nipuna wrote:Please tell me Another circuit
I didn't make it. But I tried a booster that i Bought from the market. When I have time i will Build that circuit.
Then why did you asked another? :shock:
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Re: High Gain UHF Booster

Post by Nipuna » Tue Apr 20, 2010 10:06 pm

Because I want to Know a Powerful Booster
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Reginald
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Re: High Gain UHF Booster

Post by Reginald » Wed Apr 21, 2010 5:19 am

Nipuna wrote:Please tell me Another circuit
I didn't make it. But I tried a booster that i Bought from the market. When I have time i will Build that circuit.

Then why did you asked another? :shock:
Nipuna wrote:Because I want to Know a Powerful Booster
You didn't even build the first one.. do you think it is fair to ask another even without building the first one? What exactly you want to get yourself satisfied, a whole lot of circuit diagrams on your table? :lol:
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