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Re: [LPFM] The problem of having such an efficient dipole antennae.   Message List  
Reply | Forward Message #4239 of 6098 |
Re: [LPFM] The problem of having such an efficient dipole antennae...

--- In LPFM_Radio@..., "Ross Levis" <ross@s...> wrote:
>
> I just found this page.
>
http://www.radio-electronics.com/info/circuits/resistor_attenuator/resistor_atte\
nuator.php

>
> Only 3 resistors are required. Use 1 watt resistors. You may get
away without a circuit board and just solder them together. Just use
the first method and check the table for R1 & R2 values for the loss
in DB you need.
>
> Then go down to Dick Smith and hope they have some.
>

That's fantastic! Thank you. I'll probably just build it on a little
bit of veroboard and wire it soap-on-a-rope style inline to the cable
(I'm on a very limited budget here)

-Michael






Fri Jan 6, 2006 4:22 am

exparrotnz
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Message #4239 of 6098 |
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You can build an attenuator circuit using resistors which is fairly simple and much cheaper. You would need a tiny piece of circuit board and a simple diagram...
Ross Levis
rosslevis
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Jan 6, 2006
2:56 am

I just found this page. http://www.radio-electronics.com/info/circuits/resistor_attenuator/resistor_attenuator.php Only 3 resistors are required. Use 1 watt...
Ross Levis
rosslevis
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Jan 6, 2006
3:26 am

... http://www.radio-electronics.com/info/circuits/resistor_attenuator/resistor_attenuator.php ... away without a circuit board and just solder them together....
Michael
exparrotnz
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Jan 6, 2006
4:22 am

I'm guessing I want to build this inside a metal box to prevent RF interference? -Michael ... ...
Michael
exparrotnz
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Jan 6, 2006
5:49 am

RG178 has very high loss figures but don't ask me where to get hold of any. Best just build an attenuator Adam...
Pirate FM 88.1
arubie2000
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Jan 6, 2006
5:48 am

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