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Search: Posts Made By: mmbridges
Forum: Reception Devices 14-Nov-2014, 12:10 AM
Replies: 6
Views: 8,644
Posted By mmbridges
Yep, I already got some enclosure ideas from...

Yep, I already got some enclosure ideas from searching the web. The OTA setup I am working on is in a fringe area and I need every bit of NM that I can get so the .4dB noise factor for the KT-200...
Forum: Reception Devices 13-Nov-2014, 10:54 PM
Replies: 6
Views: 8,644
Posted By mmbridges
Yeah, just got word back from Kitztech and they...

Yeah, just got word back from Kitztech and they indicated that the negative DC line was isolated from the house wiring and like you said, indicated no problems with ground block or signal...
Forum: Reception Devices 13-Nov-2014, 7:59 PM
Replies: 6
Views: 8,644
Posted By mmbridges
Hi ADTech, Thanks for the quick reply. The...

Hi ADTech,

Thanks for the quick reply. The Kitztech KT-200 comes in two versions. See http://www.kitztech.com/

One has a separate DC input plug for the AC/DC adapter which would sit in the...
Forum: Reception Devices 13-Nov-2014, 6:25 PM
Replies: 6
Views: 8,644
Posted By mmbridges
Mast Pre-Amplifier Powering Options

Hi folks,

I am looking to buy a mast mounted pre-amp. I have the option of using a power injector which I believe sends DC voltage up to the mast mounted pre-amp through the same coax cable that...
Forum: Reception Devices 6-Dec-2013, 2:55 AM
Replies: 7
Views: 9,879
Posted By mmbridges
Hi GroundUrMast, It was not obvious to me....

Hi GroundUrMast,

It was not obvious to me. However, I have seen the quality your posts and what is obvious to me is your superior knowledge and expertise in the subject matter.

I am new to...
Forum: Reception Devices 4-Dec-2013, 2:48 AM
Replies: 7
Views: 9,879
Posted By mmbridges
So it looks like Frii's formula is what I was...

So it looks like Frii's formula is what I was looking for. See

http://en.wikipedia.org/wiki/Noise_figure

I believe this is the formula behind the various online cascaded noise figure...
Forum: Reception Devices 3-Dec-2013, 12:40 AM
Replies: 7
Views: 9,879
Posted By mmbridges
Missing Details

Thanks for the reply Gmast. I have seen this thread. In particular:

Scenario 3 (rooftop antenna followed by pre-amp)

indicates

(Note that his scenario assumes that the gain of the pre-amp...
Forum: Reception Devices 2-Dec-2013, 9:07 PM
Replies: 7
Views: 9,879
Posted By mmbridges
Noise Figure Accounting

I am trying to understand how the addition of a low noise figure (NF) preamp can improve the overall system NF.

I have a Zenith DTT-901 Set Top Box (STB) that I cannot find the NF for so it so...
Showing results 1 to 8 of 8

 

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