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xymox1
Premium
join:2008-05-20
Phoenix, AZ
reply to xymox1

Re: High freq attentuator

Another example of a cable simulator filter that you just cant buy online anywhere... »www.eaglecomtronics.com/pdfs/Equalizers.pdf



DrDrew
That others may surf
Premium
join:2009-01-28
SoCal
kudos:15

said by xymox1:

Another example of a cable simulator filter that you just cant buy online anywhere... »www.eaglecomtronics.com/pdfs/Equalizers.pdf

If you really want to mess with levels on the high end of the spectrum affecting the low end as little as possible.... a 100' coil of RG6 has about 6 dB of loss at 800 Mhz and 1 dB of loss at 30 Mhz.

Drop that between the wall plate and modem in place of a 6' jumper.

In reality though, your signals are fine.
--
If it's important, back it up... twice. Even 99.999% availability isn't enough sometimes.


xymox1
Premium
join:2008-05-20
Phoenix, AZ

quote:
This is one point on which we agree. The fewer connections and parts you can have in an RF network the better
In this we all agree

I do still want to be able to hit 0db and play with some measurements in the RF section and look at some levels after the LNA.

I was thinking tho. Cable techs routinely use a splitter to drop levels when they really are too hot. If attenuation is really needed why not use one of these selective attenuators and just drop rcv levels ? Using a attenuator that also effects TX seems to make no sense.


DrDrew
That others may surf
Premium
join:2009-01-28
SoCal
kudos:15

said by xymox1:

Cable techs routinely use a splitter to drop levels when they really are too hot. If attenuation is really needed why not use one of these selective attenuators and just drop rcv levels ? Using a attenuator that also effects TX seems to make no sense.

Cost. Selective attenuators are more expensive and less commonly used then splitters. Plus it's more inventory to stock, track, and maintain.

In addition, it's very rare the forward levels are too high without the upstream levels being too low. In most cases, if they are, it's a distribution system balancing issue.
--
If it's important, back it up... twice. Even 99.999% availability isn't enough sometimes.