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Search: Posts Made By: rabbit73
Forum: Help With Reception 5-Sep-2020, 9:51 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Sounds like you have some interesting experiments...

Sounds like you have some interesting experiments planned.
Forum: Help With Reception 5-Sep-2020, 4:28 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Channels checked: 4-1 (KRDK) COZI, Real...

Channels checked:

4-1 (KRDK) COZI, Real channel 24, 324.8 deg True, Signal Margin 39 dB
6-1 (WDAY) ABC, Real channel 21, 306.1 deg True, Signal Margin 68 dB
11-1 (KVLY) NBC/CBS, Real channel 36,...
Forum: Help With Reception 4-Sep-2020, 1:59 AM
Replies: 90
Views: 648,554
Posted By rabbit73
This is a simulation of the DB4e antenna pattern...

This is a simulation of the DB4e antenna pattern with the reflector removed. Most other 4-Bay antennas would be similar:

https://i.imgur.com/7WPpAYo.jpg

Since the antenna is now bi-directional,...
Forum: Help With Reception 3-Sep-2020, 10:38 PM
Replies: 90
Views: 648,554
Posted By rabbit73
You might need to do the GH with NARODS for PBS. ...

You might need to do the GH with NARODS for PBS.


I compared the two. Both work, but I prefer the HDHR.

https://i.imgur.com/GW4yD4y.jpg

https://i.imgur.com/VyLeSIU.jpg
...
Forum: Help With Reception 3-Sep-2020, 5:19 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Yes, that is a good idea for a DIY antenna. ...

Yes, that is a good idea for a DIY antenna.

https://i.imgur.com/FFvapU1.jpg

http://www.m4antenna.eastmasonvilleweather.com/index.html

https://i.imgur.com/TtVlJdn.jpg
...
Forum: Help With Reception 3-Sep-2020, 2:49 AM
Replies: 90
Views: 648,554
Posted By rabbit73
I had thought that a Antennas Direct DB4e with...

I had thought that a Antennas Direct DB4e with the reflector removed might be worth a test. You would have to add a dipole for VHF channel 13.

I will try to find some antenna patterns; they are...
Forum: Help With Reception 3-Sep-2020, 2:43 AM
Replies: 90
Views: 648,554
Posted By rabbit73
https://i.imgur.com/iTqlYVK.jpg Thank you...

https://i.imgur.com/iTqlYVK.jpg

Thank you for the UHF scan; nicely done.

KVRR virtual 15-1 RF 19 shows a little more than the minimum SNR for reception, but could be a problem at times

WDAY...
Forum: Help With Reception 2-Sep-2020, 9:39 PM
Replies: 90
Views: 648,554
Posted By rabbit73
https://i.imgur.com/fF97XbO.jpg I think you...

https://i.imgur.com/fF97XbO.jpg

I think you have done a good job finding the best antenna location available on your property without going to extreme measures like a push-up mast with guy wires...
Forum: Help With Reception 2-Sep-2020, 5:54 PM
Replies: 90
Views: 648,554
Posted By rabbit73
I looked at some satellite and ground views of...

I looked at some satellite and ground views of your location. I think the trees are a significant part of your reception problem; they appear to be taller than your antenna.

I will not post any...
Forum: Help With Reception 2-Sep-2020, 1:24 AM
Replies: 90
Views: 648,554
Posted By rabbit73
I'm glad the video helped you; it is an important...

I'm glad the video helped you; it is an important concept when using the dongle with SDR#.

Adjusting the gain of the RTLSDR Scanner is a little different. You raise the gain until the noise floor...
Forum: Help With Reception 1-Sep-2020, 10:43 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Back on topic From PM: I assume that there...

Back on topic
From PM:

I assume that there is an internal amp to compensate before splitting to four tuners like in the TiVo. Each tuner should have its own AGC in use for the particular channel...
Forum: Help With Reception 1-Sep-2020, 10:17 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Uh, no; not exactly. I edited my post #11 above...

Uh, no; not exactly. I edited my post #11 above and added an image and a video. Please look at it.

I have used 3 SDRs:

https://i.imgur.com/2E2nvoV.jpg

For $25 you can buy an RTL-SDR.COM V3...
Forum: Help With Reception 1-Sep-2020, 4:53 PM
Replies: 90
Views: 648,554
Posted By rabbit73
It was worth it to me; it gave me a spectrum...

It was worth it to me; it gave me a spectrum analyzer for $25. I was then able to see if the channel was there when my tuner didn't pick it up during a channel scan.

The first thing I did when...
Forum: Help With Reception 1-Sep-2020, 2:18 PM
Replies: 90
Views: 648,554
Posted By rabbit73
It was difficult for me to assemble the software;...

It was difficult for me to assemble the software; I'm not an expert with software. I was about ready to give up, but on the third try I got it to work.

Pete Higgins had a tutorial on the HDF...
Forum: Help With Reception 1-Sep-2020, 1:51 AM
Replies: 90
Views: 648,554
Posted By rabbit73
Yes, you can see the whole channel with the...

Yes, you can see the whole channel with the Airspy R2 and SDR#.

https://i.imgur.com/NOyvwbS.jpg

For signal quality, SNR and errors, I use my SONY TV and a SiliconDust HDHR.

Bad signal
...
Forum: Help With Reception 1-Sep-2020, 1:00 AM
Replies: 90
Views: 648,554
Posted By rabbit73
A spectrum analyzer can be very useful. It will...

A spectrum analyzer can be very useful. It will allow you to check the SNR.

https://i.imgur.com/bVDpfOz.jpg

The RTL-SDR.COM V3 dongle doesn't show a whole channel with the SDR# (SDRsharp)...
Forum: Help With Reception 31-Aug-2020, 10:34 PM
Replies: 90
Views: 648,554
Posted By rabbit73
OK, thanks https://i.imgur.com/fF97XbO.jpg ...

OK, thanks

https://i.imgur.com/fF97XbO.jpg


I used the TVFool Interactive Browser:
https://www.tvfool.com/?option=com_wrapper&Itemid=90

The green signal lines are based on old channel...
Forum: Help With Reception 31-Aug-2020, 6:15 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Here is a signal report for your location: ...

Here is a signal report for your location:
https://www.rabbitears.info/searchmap.php?request=result&study_id=143302

https://i.imgur.com/EzhDH6w.jpg

For comparison, a TVFool signal report for...
Forum: Help With Reception 31-Aug-2020, 5:40 PM
Replies: 90
Views: 648,554
Posted By rabbit73
Next reply by verder by PM: Thank you for...

Next reply by verder by PM:

Thank you for the very thorough additional information.

We will study your problem and come back with some comments that might be helpful.
Forum: Help With Reception 31-Aug-2020, 5:26 PM
Replies: 90
Views: 648,554
Posted By rabbit73
His reply by PM:

His reply by PM:
Forum: Help With Reception 31-Aug-2020, 5:22 PM
Replies: 90
Views: 648,554
Posted By rabbit73
OTA recommendations

By PM:

Hello, verder.

Many others have to wait because the TVFool staff is very small. Some never are able to post. This forum is becoming less active; it isn't as secure since they didn't...
Forum: Help With Reception 30-Aug-2020, 7:07 PM
Replies: 15
Views: 39,836
Posted By rabbit73
Hello, again rsw1941. Since I don't know...

Hello, again rsw1941.

Since I don't know your specific concern about ambient noise, I will have to give a general answer.

The ambient noise at any location will reduce the SNR of both analog...
Forum: Antennas 27-Aug-2020, 4:45 PM
Replies: 3
Views: 58,068
Posted By rabbit73
Hello, alphonsobellinni; welcome to the forum. ...

Hello, alphonsobellinni; welcome to the forum.

Is the mast grounded?

In order for the preamp to receive power from the power inserter, current must be able to flow on the center conductor and...
Forum: Help With Reception 26-Aug-2020, 10:04 PM
Replies: 10
Views: 31,374
Posted By rabbit73
This is what the WPKN-FM transmitter site looks...

This is what the WPKN-FM transmitter site looks like:

http://forum.tvfool.com/attachment.php?attachmentid=3845&d=1598479070

This is the coverage area for WPKN:
...
Forum: Help With Reception 25-Aug-2020, 10:51 PM
Replies: 10
Views: 31,374
Posted By rabbit73
http://forum.tvfool.com/attachment.php?attachmenti...

http://forum.tvfool.com/attachment.php?attachmentid=3844&d=1598397305


Hello, BigBean

Thanks for the FM report image. I see you found out that the FM reports don't link like the TVFool...
Showing results 151 to 175 of 500

 

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