[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: attenuator construction questions



Radio Shack sales 9 db pads with F connectors on them. I use them in line for
the same reason and they work fine.

"Mark L. Hammond" wrote:

> Hello all,
>
> To receive AO-40, I'm using a DEM preamp into a modified Transystem 3733
> downconverter and BBQ style dish.  I'm getting about an S9+5 or S9+10
> "background" signal.  I'm interested in constructing an in-line attenuator
> to put between the downconverter and my TS-790A help bring this down to a
> reasonable level.  (yes, the 144 ATT in the rig helps, but I want more.)
>
> I'm guess I'm showing my ignorance here, but how do I do the calculations
> to determine the circuit needed for various levels of
> attenuation?  Meaning, suppose I want an attenuator that achieves 15 dB of
> attenuation?  What about 12 dB, or 20 dB?  I've perused/searched my ARRL
> Handbook CD, but can't find what I need.
>
> Instinct tells me it will probably only be resistors--I just don't know
> what values or how many, etc.
>
> Any help is much appreciated.
>
> 73,
>
> Mark L. Hammond  [N8MH]
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org



AMSAT Top AMSAT Home