[mythtv-users] Coax splitters - how painful are they?

R. G. Newbury newbury at mandamus.org
Fri Sep 28 21:11:25 UTC 2007

Brian Wood wrote:
> Jay R. Ashworth wrote:
>> On Wed, Sep 26, 2007 at 10:33:32PM -0400, R. G. Newbury wrote:
>>> What about coax/antenna amps?  Anyone have any recommendations?
>>> Neither my cable feed nor my antenna have enough oomph to give a usable 
>>> signal after being combined into single coax.
>> You shouldn't be combining incoming CATV with incoming OTA (probably at
>> all; certainly without amplifiers and a directional coupler).  If you
>> just tie them together, you're leaking CATV out the antenna, and you
>> are very likely to receive a fairly prompt visit from the FAA.
>> No, I didn't hit the wrong key; CATV has a visual carrier fairly close
>> to the 121.5 aviation emergency frequency; the FAA sometimes
>> investigates such issues personally; sometimes they call the FCC EIC
>> for the district.
> I can state that Mr. Ashworth is correct. I have personally met with
> several USAF and CAP officers about leakage problems around 121.5 Mhz.
> So at least on some occasions they bring in the military folks even.
> Cable systems are legally required to regularly patrol their systems for
> any such leakage, as they do in fact use channels in that range.
> Basically if you try and combine the signals you will essentially be
> transmitting the CATV system through the air, not a great idea, though
> your neighbors might enjoy it, especially if you have some premium
> channels :-)
> beww

Nope, no premium stuff. That's why I have the antenna. And I doubt that 
the cable feed would make it backwards through the amp on the antenna 


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