On Wed, 26 Aug 2020 06:06:44 -0700 (PDT), trader_4
wrote:

On Monday, August 24, 2020 at 5:00:04 PM UTC-4, micky wrote:
In alt.home.repair, on Mon, 24 Aug 2020 14:31:19 -0400, Peter
wrote:

On 8/24/2020 12:03 PM, Jim Joyce wrote:
On Sun, 23 Aug 2020 20:46:31 -0700 (PDT), wrote:

We have an antenna tower with a antenna rotor.
How do I auto program the channels with the rotor in use ?
Every time you start the programming, it wipes the previous channels.

I want to be able to set the antenna in one direction, Search ...
Set the antenna in another direction, Search ...

It's going to be the same set of answers you got when you asked this
question a few weeks ago.

Disconnect and optionally remove the rotor. Add a second (or more) antenna
and use a combiner so that your tuner app thinks it's all a single antenna.

Use one of the OTA antenna websites to determine where the stations are
broadcasting from in your area.

Have you tried mounting an omnidirectional antenna on your tower,

Even without the other steps below, doesn't this sound like a lot more
time and effort than adding stations manually?


perhaps with a low noise uhf/vhf amplifier, connecting that setup to
your TV temporarily, re-scanning, and seeing whether you receive all the
stations you desire/expect? You might even be able to find someone to
loan those items to you, or allow you to purchase them with a guaranteed
refund if they are "unsatisfactory". Assuming it does, then disconnect
that setup, reconnect your rotor controlled directional antenna and dial
the rotor direction for each station providing the best reception. Web
sites, such as /www.antennasdirect.com/transmitter-locator.html
www.antennaweb.org and others easily located with a web search can help
you determine if the strategy has been successful.

You would sure think so. Of course stations are added, move, etc so it may
need updating occasionally, but still, sounds like manually adding them is
the way I would do it. You'd think TV manufacturers might have thought of
this and provided a feature where it will save what's there, but allow
you to move the antenna and scan those in too. But I guess not.

The thing is digital TV does not use channels the way NTSC did.
Channel 20 may not actually be in the band the old channel 20 used,
and that shows up particularly apparent with the 13 and below channels
that seem like they should be VHF but they are usually (always?) up in
the UHF band. That is why you need a scan.
The easiest to understand is when you get that notice you need to
rescan your local channels because the frequency changed. It is still
channel 20 on your TV but it is not really where you would think
channel 20 would be. Channel numbers are just software these days.