TV Fool  

Go Back   TV Fool > Search Forums

Notices

Showing results 1 to 25 of 64
Search took 0.01 seconds.
Search: Posts Made By: tripelo
Forum: Antennas 24-Jun-2017, 1:16 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare: Antennas Direct DB8e & CM-4228HD

(continued from previous post)

Part 4. Compare 6 antennas (DB8, DB8e, 4228, 4228HD, 91xg, HDB91x)

Having earlier measured four other high-gain UHF antennas relative to the HDTVi antenna, this...
Forum: Antennas 24-Jun-2017, 1:15 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare: Antennas Direct DB8e & CM-4228HD

(continued from previous post)

Part 3. Data Collection & Analysis

The amount of data collected represents:

Number of UHF channels: 23
Measurements per channel
DB8e4 and 4228HD: 9
HDTVi:...
Forum: Antennas 24-Jun-2017, 1:14 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare: Antennas Direct DB8e & CM-4228HD

(Continued from previous post)

Part 2. Images of Three Antennas at Test site

The following are images of the two antennas at the test site (antenna center height=25 feet).

Image below shows...
Forum: Antennas 24-Jun-2017, 1:14 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare: Antennas Direct DB8e & CM-4228HD

Antenna tests conducted on June 15, 2017.

Objective: Compare performance of selected VHF antennas while receiving DFW TV channels.

Antennas:

1. Terk HDTVi (as reference)
2. Antennas Direct...
Forum: Antennas 6-Jul-2016, 3:33 PM
Replies: 109
Views: 113,288
Posted By tripelo
Part 5 (continued from previous post) ...

Part 5 (continued from previous post)

Specifications, Measurement, Analysis and Discussion

In an effort to reconcile the various gain and SWR numbers available for these two antennas, the...
Forum: Antennas 6-Jul-2016, 3:32 PM
Replies: 109
Views: 113,288
Posted By tripelo
Part 4 (continued from previous post) 4NEC2...

Part 4 (continued from previous post)

4NEC2 Analysis and Discussion

Antenna simulation software (4NEC2) could be useful in comparing antennas. Generally, software analysis is not a substitute...
Forum: Antennas 6-Jul-2016, 3:32 PM
Replies: 109
Views: 113,288
Posted By tripelo
Part 3 (continued from previous post) ...

Part 3 (continued from previous post)

Attached are Graphs depicting a summary of data analysis.

1. Average received power levels, (Image below):

An average 9 measurements of each channel (8...
Forum: Antennas 6-Jul-2016, 3:31 PM
Replies: 109
Views: 113,288
Posted By tripelo
Part 2. Images of the Two Antennas at Test site ...

Part 2. Images of the Two Antennas at Test site

The following are images of the two antennas at the test site (antenna center height=25 feet).

Image below shows Antennas Direct ClearStream 5...
Forum: Antennas 6-Jul-2016, 3:30 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare: Antennas Direct C5 & Televes Yagi B-III

A series of antenna tests conducted on July 1, 2016.

Objective: Compare performance of selected VHF antennas while receiving DFW TV channels

Antennas:

1. Antennas Direct C5
2. Televes Band...
Forum: Antennas 29-Apr-2016, 4:13 PM
Replies: 109
Views: 113,288
Posted By tripelo
The HDTVi Antenna as a Reference

(continued from previous post)

Part 4. The HDTVi Antenna as a Reference

Another way of comparing gain of the antennas is to directly compare received signal levels to that of the HDTVi antenna....
Forum: Antennas 29-Apr-2016, 4:12 PM
Replies: 109
Views: 113,288
Posted By tripelo
Received Signal Strength Data Analysis

(continued from previous post)

Part 3. Received Signal Strength Data Analysis, Five UHF Antennas

Attached are four Graphs depicting a summary of data analysis.

1. Average Relative Gain,...
Forum: Antennas 29-Apr-2016, 4:11 PM
Replies: 109
Views: 113,288
Posted By tripelo
Images of 5 Antennas at Test site

(continued from previous post)

Part 2. Images of 5 Antennas at Test site

The following are images of the five antennas at the test site (antenna center height=25 feet).

Image below shows...
Forum: Antennas 29-Apr-2016, 4:10 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare Received Signal Strength of 5 UHF Antennas

A series of antenna tests were conducted on April 14, 2016.

Objective: Compare performance of selected UHF antennas while receiving DFW TV channels

Antennas:

1. Antennas Direct 91xg...
Forum: Antennas 30-Jan-2015, 9:00 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare Several Preamplifiers (cont.)

Referring to previous posts:

- Compare Several Preamplifiers OTA-DFW (http://forum.tvfool.com/showpost.php?p=48946&postcount=87)
- Compare Preamplifiers - Test Procedure & Configuration...
Forum: Antennas 30-Jan-2015, 8:13 PM
Replies: 109
Views: 113,288
Posted By tripelo
Pete, thank you for your comments. ...

Pete, thank you for your comments.



Your signal situation does seem particularly tough.

Guess most people have a more difficult TVfool chart than this one in DFW.

This DFW location is...
Forum: Antennas 25-Jan-2015, 4:04 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare Preamplifiers - Test Procedure & Configuration

Referring to Preamp Comparison data posted earlier.
(http://forum.tvfool.com/showpost.php?p=48946&postcount=87)

Comparison method; signals and path from antenna to measurement receiver:
...
Forum: Antennas 25-Jan-2015, 3:07 PM
Replies: 109
Views: 113,288
Posted By tripelo
Thank you ADtech and Pete. Your comments are...

Thank you ADtech and Pete. Your comments are appreciated.



That is a possibility.



Most would probably agree.
Forum: Antennas 24-Jan-2015, 2:14 PM
Replies: 109
Views: 113,288
Posted By tripelo
Compare Several Preamplifiers OTA-DFW

Signal measurements from several preamplifiers were compared, while receiving selected UHF channels and one VHF channel in the Dallas Fort Worth area.

Preamps Compared (shown in image below):
...
Forum: Antennas 20-Sep-2014, 3:14 PM
Replies: 109
Views: 113,288
Posted By tripelo
UHF Signal Strength vs Antenna Height (AGL)

This post is a continuation of:

UHF Signal Strength vs Antenna Height (AGL) (http://forum.tvfool.com/showpost.php?p=46528&postcount=79)

In the previous post linked above; the signal strength of...
Forum: Antennas 20-Sep-2014, 2:14 PM
Replies: 109
Views: 113,288
Posted By tripelo
Pete, that's a nice image of your vertically...

Pete, that's a nice image of your vertically stacked HDB8-X antennas.



Interesting.

There can be certain locations in elevation (height) where an antenna with an aperture that is small in...
Forum: Antennas 14-Sep-2014, 7:30 PM
Replies: 109
Views: 113,288
Posted By tripelo
UHF Signal Strength vs Antenna Height (AGL)

In May 2012, Bob Nelson (forum member re_nelson (http://forum.tvfool.com/member.php?u=1759)) and I performed some experiments to observe the effects (in a suburban area) of UHF signal strength...
Forum: Antennas 14-Sep-2014, 6:47 PM
Replies: 109
Views: 113,288
Posted By tripelo
Thanks Gil, for your kind remarks.

Thanks Gil, for your kind remarks.
Forum: Antennas 13-Sep-2013, 1:10 PM
Replies: 109
Views: 113,288
Posted By tripelo
Televes DAT-75 vs. Antennas Direct 91XG

A pair of UHF antennas were compared:

Antennas Direct 91XG and Televes DAT-75

Both antennas have built-in baluns.

Equipment used in the tests:

- Push-up sectioned mast with two ~5 ft....
Forum: Antennas 7-Sep-2013, 12:54 PM
Replies: 109
Views: 113,288
Posted By tripelo
Thanks Pete. Glad you like. Maybe...

Thanks Pete. Glad you like.



Maybe close to a conclusion for the long Yagis. Additional work was done for reliability reasons and reduction of losses. Earlier briefly mentioned homebrew:...
Forum: Antennas 6-Sep-2013, 2:14 PM
Replies: 109
Views: 113,288
Posted By tripelo
Multipath: STB-Converter Performance

The reception of WHAS-11 using the stack of long-Yagis (http://forum.tvfool.com/showpost.php?p=37723&postcount=53) was evaluated through the end of 2010 and into 2011.

Most of the time the signal...
Showing results 1 to 25 of 64

 

All times are GMT. The time now is 7:45 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright © TV Fool, LLC