[SixClub] 6M Getting into TV Channel 3

[Roger (K8RI)]

Howard Bingham wrote:
> kd4e wrote:
>
>> I raised my delta loop *from* a feedpoint of 6'
>> above the ground *to* 15' and now it is getting
>> into the TV (all channels).
>>
>> The TV antenna is at 30 feet and is about 30'
>> from my 6M antenna.  (I am running 100W SSB.)
>>
>> I have disconnected the outside antenna at the
>> distribution amp inside the house and used an
>> amplified set-top antenna - no interference then.
>>
>> QUESTIONS:
>>
>> 1.  Is there a typical separation of the antennas
>> that might solve this?  e.g. 50' 75' 100'?
>>
>> 2.  Is there a filter for the TV that would take
>> out 6M?
>>
>>
> -- 
>
> I understand that once digital TV goes in, that may solve TVI issues 
> with 6m..
The interference issues are slightly different, but if you drive an amp 
into saturation so it is bad enough as in this issue you will still lose 
the station.  If you change that statement above to, "may solve some TVI 
issues with 6-meters" it would be correct.

Digital TV does buffer the signal and it has some rudimentary correction 
built in (IF I understand correctly) so a brief blip of interference 
from CW or SSB would not be noticed, BUT it only takes a couple seconds 
of a signal strong enough to cause blocking and the set just gives a 
"signal lost"  or  "no signal, check antenna connections" message on an 
otherwise blank screen. 

I've been using digital and digital HD for well over a year.  An analog 
signal that only gives a marginal image is strong enough to give a 
crystal clear one in digital and the difference in signal strength 
between no image and a good image is much narrower than with analog. 
However it is not true to say with digital you either get a good image 
or none.  There is an area where the image will break up, pixilate, or 
go intermittent.  An interfering signal can do the same.

The really big difference is the sound is digital and they'll *normally* 
no longer hear some one talking when the image starts breaking up. <:-))

Roger (K8RI - ARRL Life Member)
www.rogerhalstead.com
N833R (World's oldest Debonair)