[mythtv-users] HDHR app can tune a station but Myth via HDHR can't

Gary Buhrmaster gary.buhrmaster at gmail.com
Thu Feb 29 03:58:54 UTC 2024

On Thu, Feb 29, 2024 at 3:37 AM DryHeat122 <dryheat122 at gmail.com> wrote:
> I have a HDHR Duo. For one station (Channel 12), the HDHR app can tune it just fine. When I try to "watch this channel" on Myth via Program Guide, "signal" (IDK if that is strength or quality) dithers between 56% & 59% and it can't get a lock. Recordings on that channel also fail.
> What could explain this? Every other channel works fine. I am only 9 mi as the crow flies from the mountain where all the stations broadcast.  Rabbitears.com lists the signal as good. If the app can lock the signal accessing through the device then Myth accessing through the device should able to also, no?

Yes, but.  If the signal is "too strong", the HDHR's
can overload their frontend(*) and the decoding
can fail.  And if you do not have an LTE filter, one
can find that the local (600Mhz) LTE signal
from one or more of the local mobile providers
results in overloads on the front end.  And,
lastly, sometimes too strong a signal can
overload the frontend too, which can require
a pad(**), although if your other channels
are (deep) fringe may require a channel
specific pad (which is available, but typically
not cheap).

(*) RF frontend is a well understood term
in EE and RF physics.

(**) aka attenuator

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