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Search: Posts Made By: tripelo
Forum: Special Topics 12-Sep-2013, 2:01 PM
Replies: 8
Views: 22,687
Posted By tripelo
Interesting. You obviously have familiarity with...

Interesting. You obviously have familiarity with test equipment and testing methods.



Takes a lot of space, but would guess some of that equipment is pretty useful.



Some of the tuners...
Forum: Special Topics 12-Sep-2013, 2:11 AM
Replies: 8
Views: 22,687
Posted By tripelo
Don't know. Years ago, I measured noise...

Don't know.

Years ago, I measured noise figure of VHF & microwave prototypes for military use. The prototypes would be similar to an unshielded TV preamp.

Here in Dallas, the ambient noise...
Forum: Special Topics 11-Sep-2013, 12:55 PM
Replies: 8
Views: 22,687
Posted By tripelo
Winegard LNA-200 Components

Hi Pete,

The following is some guesswork based on your images and information.

It appears that the LNA-200 has two active amplifier devices.

The UHF portion is amplified by Q2, an ATF-54143...
Forum: Special Topics 11-Sep-2013, 3:02 AM
Replies: 8
Views: 22,687
Posted By tripelo
Thanks Pete, Your work is helpful. ...

Thanks Pete,

Your work is helpful.

Will post some detail in a day or so.
Forum: Special Topics 10-Sep-2013, 2:06 AM
Replies: 8
Views: 22,687
Posted By tripelo
Pete, thanks for the report and the images. ...

Pete, thanks for the report and the images.

About the images.

Can you try to read any numbers or letters on:

Q1, Q2, Q3
D1 & D2

The numbers and letters on each device will likely be 3...
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