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Search took 0.00 seconds. Search: Posts Made By: Tower Guy

Forum: Help With Reception

4-May-2011, 6:18 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

Another plan would be to have the antennas about...

Another plan would be to have the antennas about 2-4' apart vertically and also offset a total of 31 1/8" left/right. (Or one antenna would be 15.0625 to the left of center and the other would be...

Forum: Help With Reception

4-May-2011, 11:31 AM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

Your math is correct. I did extrapolate off the...

Your math is correct. I did extrapolate off the right side of the graph. In any event you may have discovered an offset in the HDTV primer graph.

Unfortunately the element length of the...

Forum: Help With Reception

3-May-2011, 1:50 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

A better balun would also raise the signal...

A better balun would also raise the signal strength of the interfering stations. You need to drop the signal strength of the two interfering stations. I would not waste any time on making KQTV...

Forum: Help With Reception

2-May-2011, 7:12 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

If you want to avoid a pair of stacked VHF...

If you want to avoid a pair of stacked VHF antennas you could find a single antenna with excellent side lobe performance on channel 7.

The HD7698P has a ratio of .08 at the azimuths of the...

Forum: Help With Reception

2-May-2011, 7:03 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

Look at the polar plot on the bottom left of this...

Look at the polar plot on the bottom left of this spec sheet.
http://www.winegard.com/kbase/upload/ya-1713.pdf

By convention the scale on the graph is a voltage ratio. The F/B has a voltage of...

Forum: Help With Reception

2-May-2011, 4:30 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

I made a mistake on the 34" distance. I read the...

I made a mistake on the 34" distance. I read the left side UHF distance for the third null. I should have read the right side VHF for the first null.

After a closer look there are two channel 7...

Forum: Help With Reception

1-May-2011, 8:08 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

If it were me I'd use a standard TV mast cut...

If it were me I'd use a standard TV mast cut down. I've used standard TV mast for a pair of low band antennas.

I'd redrill the booms 90 degrees from the existing holes and slightly offset one...

Forum: Help With Reception

1-May-2011, 6:25 PM

Replies: 30

Need Reliable Picture On Ch. 7

Views: 23,048

Posted By Tower Guy

I'd suggest that the problem is a combination of...

I'd suggest that the problem is a combination of a weak signal and interference from KOAM.

Your pair of Y1713s can be stacked horizontally about 34" apart to null KOAM and still add 2-3 db to...

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