I now subscribe to Dish Network (previously used Direct TV for a year), and
have no problems. I run an Alpha 87a at full limit on all bands 160 - 10
meters, and also operate at 100 watts on 6 meters. No interference at
all. I have one "dual receiver" model, as well as an HDTV receiver, and
have not had any problems with "TVI". The dish is located about 150 feet
from my tower. The nearest neighbor's dish is located about 175 feet away,
and they have no problems, even when my SteppIR 4 element is aimed right at
their house.
If my system is any indication, you should have no problems.
73,
Joe
WDØM
At 09:13 AM 1/11/2005, Tom Anderson wrote:
Fellow Tower Talk members:
I'm considering changing from cable tv to one of the dish systems. Has
anyone had any problems with RFI, etc. to dish systems vs. cable and HF or
VHF transmissions? I use a 10 element log periodic at 50 ft. with a
Collins 30-L-1 and a Kenwood TS 430S that I usually load to maybe 500 watts.
Some of the dish systems, that "advertise" giving you four digital boxes,
actually give you only two and the other two sets are controlled via some
type of RF link. My current QTH is so RF "tight" that cell phones don't
work inside. Inside my house (built in 1983) my cell phone often shows
"roaming, out of area, or no signal" and we live less than a mile from an
AT&T cell tower in the middle of the Dallas/Fort Worth area. Oh your
phone will ring inside my QTH, but to actually maintain a conversation you
have to go outside.
Does the "dish" need to be located far from my crankup tower? I've dealt
with cable rfi problems and have been able to solve most of them, like
loose fittings from the pole to the house that leak cable signals and in
reverse let in RF energy.
Fortunately my neighbors know how much I want to and do cooperate that
they don't say anything any more, but if I hear through the grapevine that
one of them is having an RFI problem I immediately offer my limited
service and at least do a visual inspection. Like the time I found a
varmint had chewed through the jacket, shielding, and dielectric on one
neighbors cable leaving only several feet of bare RG59 copper center
conductor showing. Besides my RFI, they were also receiving cable signals
on TVs in their home NOT connected to cable on channels 2-13, no UHF TV
channels. They'd get Showtime on Channel 2, Movie channel on 3, HBO on
channel 6, etc. Yes this happened, I saw it and then did some tracking,
at the homeowner's invitation of course, and found about 3 feet of RG59
or RG6 that was stapled along the edge of the house entirely stripped bare
to the center conductor. What was amazing was how good a reception of
cable signals on a TV with just rabbit ears was being received. I knew
the area tech rep at the time for the cable company and he got a
technician out and had their problem fixed in a hurry since he and I had
worked around our town to resolve cable/ham RFI issues.
Unfortunately he's not with the cable company any more and their techs
aren't always very knowledgeable about RFI issues, like the one tech who
came to my house to fix a problem and just pointed to my 50 foot crank up
tower and immediately said it was causing RFI, even before he checked his
company's cable installation.
Also I notice most cable companies are going from the old RG59 to RG6 now
for home service as they "say" the RG6 gives them better specs on digital
signals.
73 de Tom, WW5L
bandwidth" for digital
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.
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_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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