: Global Ottawa DTV Transition - Aug. 16, 2011 - update in Post #331
2011-08-19, 11:22 AM
Or just using the separate VHF/UHF inputs on the 7777. Then everything is amplified.
I have a similar setup in London: 6 & 13 through the VHF input with a VHF antenna and a 4228 through the UHF input.
2011-08-19, 11:26 AM
no need for the kt200 or the jointenna
the cm7777 can take care of it all
2011-08-19, 11:28 AM
yes but GeoStar's height of these 2 antennas are way different, it's easy to overlook because it's in yellow. There is value in keeping these 2 preamps. If you used only 1 preamp, one of the antenna would be a 20-some feet length between the antenna and the single preamp.
2011-08-19, 11:31 AM
but skipping the chan6 jointenna
would allow vhf hi
i feel stupid
thats what you said
just replace it with a UVSJ
sorry about that
2011-08-19, 11:31 AM
The reasoning that works for me ....
the kt-200 gives me the 6 pbs channels I want.
the 4228 at 35 feet gives me 13 to 66. [ all the locals]
the 302 at 6 feet gives me channel 6 amped by the 7777 ( vhf only)
the joinannteena & vhf high/low thingy filters all the others most cleanly
the 302 is only at 6 feet in the backyard as others who will not be mentioned want NO MORE NORAD ARRAYS ! on the roof ;)
but are lu****ll of Global 6 which carries NCIS / Bones ....
Yeah $26.99 for a 526, shipped with a CM7777 to Ogdensburg total is $112 all in. Add $20 for gas an border fees. $130. That's the price of the CM7777 in Canada alone after taxes. So it's nearly double the price.
But to be honest the 302SR looks like a simpler solution so I may just head to the mall today.
2011-08-19, 11:36 AM
but do you really see it being a problem to allow 2-13
instead of just 6
it would still filter out all of uhf and only allow vhf through
2011-08-19, 11:41 AM
GeoStar, if you feel like experimenting after the transition I'd try the UVSJ instead of the channel 6 jointenna and see if you get better SNR for 6,9,13.
EDIT: with removing that HLSJ too.
2011-08-19, 11:42 AM
Back on topic, I have not received any emails from Global to acknowledge my call yesterday.
2011-08-19, 11:47 AM
i have called everyday about the insanely low power
every day they say they will call back
but i never hear back
2011-08-19, 11:48 AM
Keep the pressure on! We're going to be screwed down here in London too! Of course, we'll join the "fight" once they transition here too.
2011-08-19, 11:49 AM
I'm always open to improvements and will take notes and attempt stuff
, right now this works in my signal quagmire.
13 is gathered at 35 ft and amped by the kt-200 , I get a smooooth signal , the vip302 is a better VHF antenna but is height restricted ,
unless maybe the shed needs a new clothes line ? ;)
I also have a rc 9642 that s looking to improve my reception ... ideas on that things placement ?
but 6 works for me good this way ------ digital is great ,
analog is average but better than the old rabbid ears .
Couldn't find a channel 6 yagi so just filtered the 302 :eek:
if I had my orginal DB-8 at 35 ft , things would a been simpler ...
2011-08-19, 11:57 AM
perhaps just adding a third antenna
a vhf hi
to the high side of your hlsj
if you want to continue filtering the rest of vhf lo
you could put the chan6 jointenna
before entering the hlsj
302 > chan6jointenna > hlsj
vhfhi > hlsj
2011-08-19, 12:06 PM
anyways good luck with it
let us know how it turns out
2011-08-19, 01:22 PM
Roger if you can't get something reliable in the attic with a single cut in the attic we're all doomed in Ottawa !
I get it about 95% of the time (though it is too early to say for sure). Replacing the cheap distribution amp with a lower noise amp will likely resolve any remaining problems.
The problem with VHF-LO indoors or in an attic is not just reduced signal level but increased impulse noise. This is generated by appliances and electronics in the home and sent (and radiated) throughout the house over the electrical wires and is picked up by the antenna. Moving the antenna outside, reduces the amount of impulse noise received.
2011-08-19, 01:51 PM
Thanks for all the great info guys; I have been following this thread since it started. I figured I would add my results:
Location: Kanata, near Hazeldean/Eagleson; antennas in second floor bedroom near window. Here is my tvfool:
Previous Setup; $20 4-bay UHF pointed at HC; and a 20 year old distribution amplifier. Even with this setup I could get Global-TV analog reasonably well.
Global Attempt 1:
Added a set of rabbit ears above the 4-bay antenna; added a $30 combiner/amp from a local computer store to mix the two.
Slightly better reception of CJOH analog (no Global-TV); and worse overall UHF performance. Time to return it, its truely the worst made piece of electronics I have ever seen. There is no shielding in the ampilfier unit whatsoever (no tin box); the F-connectors aren't labelled on the combiner unit; its not weatherproof in any way; the amplifier unit required you to strip coax an attach with screw terminals (no its not 300ohm; just the way it is). I'll take some pictures.
Global Attempt 2 (In Progress)
I bought a CM-7777 to see if that makes a difference. Going to try it out tonight. I'll also likely move the setup into the attic. I also bought some 300ohm twin-lead to try my hand at making a channel-6 tuned folded dipole.
Thanks to all for the great information in this thread.
2011-08-19, 01:53 PM
Or use a DB8 and a CM 7778, it works for me.
2011-08-19, 02:37 PM
statik, hi and welcome. Here are some thoughts:
Make sure you have enough space between your antennas. Also the VHF antenna should be below the UHF antenna.
Use a band combiner (such as an HLSJ, UVSJ or the separate VHF and UHF inputs on a pre-amp) that will only pass the channels the appropriate antenna is intended for and filter out the others (I am not sure what type of combiner your $30 amp has, but it may not be right).
I hope this helps.
2011-08-19, 02:42 PM
Mr Canoehead, I am glad your DB8 works for you, but it isn't a recommended solution as the DB8 is not designed to work with VHF (channels 2-13). Those who have it working are lucky, but I wouldn't rely on it as it may stop working in January when you don't want to be climbing on your roof. ;) YMMV.
2011-08-19, 02:55 PM
Thanks for the help Roger;
I tried every antenna orientation I could think of; but I'll be mindful to test with the VHF below. Its a D.W. ANT-1028 UHF/VHF combiner/preamp(can't link due to moderator rules for first posts). I was using the separate inputs on the preamp; but still no luck, and always worse UHF with combiner inline vs no combiner. The box is supposed to do the same thing as a CM-7777. Maybe I just got a dud.
Looking forward to results with the CM-7777.