2 Pre amps in series, will it help?

[RCBOB]

Here in Phoenix channel 15 and 45 are bad sometimes this time of year. I have an extra VHF/UHF/FM PREAMP and i do not know the gain. I'am willing to try having 2 pre amps in series to see if I get any signal bars on the TV setup. The one pre amp is in line now.
Will it help????

[rabbit73]

Matbe it will, but probably not. Why don't you try it?

It's hard to help you when your questions are spread out over many threads.

Your previous thread:
Phoenix OTA problems??
http://forum.tvfool.com/showthread.php?t=16001

Recently I have been having problems with receiving Channel 45-1 to 45-3 (KUTP) and Channel 15-1 to 15-3 (KNXV-ABC). At times they would come in poor as the pixels are scramble. I don't know if it's the weather (heat) that is causing this or the stations having xmtr problems. I have no other problems with the other channels that i'm aware of.
Anyone in PHX having this problem??
Or can someone give me answer to what may be the problem??
Bob

http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3de2cb79f65fe216

[JoeAZ]

Yes, it is difficult to follow your situation by virtue of different
threads over such a long period of time. If you are still using
the Quantum Antenna, it is well past it's expiration date.
The Winegard 7694P would be a good choice for you. If your
RG6 cable is more than 10 years old, replace it. My sister
uses the Winegard at 28th Street and Bell, she gets ALL the
South Mtn stations, including translators, plus she gets KGUN
9 from Tucson, quite consistently. She is a couple miles
away from the mountains that separate the Northeast Valley.

[ADTech]

It would be a rare and very specific situation where two amps are better than one. Otherwise, the second amp usually does nothing noticeably useful (best case) or it causes overloading due to excessive amplification and results in no or less reception.

[Tower Guy]

I believe that your problems are caused by multipath due to the 2 edge signals at your location. You can minimize multipath by using the most directive antenna. That would suggest the HD 7698P or a two antenna solution, one for UHF and one for VHF.

[JoeAZ]

Forgot to mention that the antenna may need to be
adjusted so as to point at not only South Mtn but
slightly upward as well. It made a big difference at
28th Street and Bell.

[RCBOB]

TRIED IT and it killed all my channels. When I turn the GAIN pot down the good channels came back but didn't help my problem.
Looks like a new antenna has to be install.
And will try pointing it up when hell freezes over. lol

[rabbit73]

And will try pointing it up when hell freezes over. lol

That makes four suggestions out of five in six different threads you have rejected without trying.

http://forum.tvfool.com/attachment.php?attachmentid=2045&d=1466633825

http://forum.tvfool.com/attachment.php?attachmentid=1746&d=1446858514

http://forum.tvfool.com/attachment.php?attachmentid=2370&stc=1&d=1475692853

[rabbit73]

Bob:

Can you please show us a photo of your antenna?

Is this, by any chance, your antenna?

http://forum.tvfool.com/attachment.php?attachmentid=2832&stc=1&d=1501291584

[rickbb]

And will try pointing it up when hell freezes over. lol

When we say point it up a bit we mean quite literally a bit. As in just a few degrees.

An antenna that is directional is directional in ALL directions. Left, right AND up, down. most are more narrow in the vertical than horizontal directions and require some up/down fine tuning.

If you aim that really expensive, highest gain that money can buy, directional antenna at the base of a nearby hill you aren't going to get squat. Tilt it up at the top, or just over the top of the hill and you might be surprised at the increase in reception.

You aim at the direction the signal is coming from, it just might be coming down at you a bit. It won't go through solid objects, but it often will go over or around it.

[rabbit73]

RCBOB:

The reason why I asked to see a photo of your antenna is because I want to see how it is mounted.

Your tvfool report says "desert cove," so I looked for an antenna in the desert cove area and found this one taken by the car-mounted Google ground camera, but I don't know if it is your antenna:

http://forum.tvfool.com/attachment.php?attachmentid=2832&d=1501291670

The quality of the photo isn't very good, but it looks like the antenna is mounted for vertical polarization. TV signals are primarily transmitted with horizontal polarization, so I can't imagine why you would mount an antenna for vertical polarization when you are an ex-commo guy and RC enthusiast. That's why I asked to see a photo of your antenna.

[A2J33P]

Here in Phoenix channel 15 and 45 are bad sometimes this time of year. I have an extra VHF/UHF/FM PREAMP and i do not know the gain. I'am willing to try having 2 pre amps in series to see if I get any signal bars on the TV setup. The one pre amp is in line now.
Will it help????

I don't believe that the downstream preamp will allow power from the inserter to pass, therefore it's unlikely that the upstream preamp will be powered.

[rabbit73]

I think Bob means the second preamp will be after the power inserter for the first preamp, which means that each would be properly powered.

[A2J33P]

I think Bob means the second preamp will be after the power inserter for the first preamp, which means that each would be properly powered.

Ah Ha! Got it!