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Old 26-Sep-2018, 2:12 PM   #1
BrooklinOTA
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Join Date: Dec 2013
Posts: 41
Looking for guidance around preamps

Hi Everyone,

I want to thank everyone for the amazing help I've received so far. Because of this forum, I'm getting some great college football, NFL and sports playoffs all for a bit of work and very little cash.

I have been puzzling over the situation with preamps for some time and I was hoping that someone could help me get some clarity. I understand that a preamp only helps with loss through the cable run and does nothing to benefit reception. Also, I have been discouraged from using a preamp because of the added noise that will be added.

All of that said, it appears to me that my system would benefit from the use of a preamp and here are my details:

Tv Fool report: http://www.tvfool.com/?option=com_wr...9038aaf236a07a

I have a run of 75 feet of RG6 coming from a DB8e going to a Channel Master distribution amp.

Now, when I look at calculations of loss over 75 feet of RG6 and then consider some of the channels I get that can be variable with reception, it seems the preamp would work.

Take NBC, real channel 33 for example. Channel 33 is broadcast at 587 MHZ and over a 75 foot run of RG6 I should be losing around 3.65 db.

So if that is the case, would it not make sense to introduce something like a TVPRAMP1R, that brings 2.6 db of loss into the system? Wouldn't I achieve one extra db of gain and it would help the channel be more stable when the signal is borderline in and out?

Thanks for the help!
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