View Single Post
Old 13-Apr-2019, 1:44 AM   #4
Retired A/V Tech
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,725

Originally Posted by 98mystique2 View Post
Looking to get some of the Chicago channels. Preferably WGN. I know with a medium antenna and standing on the roof with the antenna plugged directly into the tv I was able to get it so there is hope.
Good test.
In an effort to improve chances I bought a DB8e which should be in next week.
WBBM is one of your weaker Chicago channels and it is on VHF-High channel 12. The DB8E is designed primarily for UHF channels.
Will I be ok to run a high gain preamp with that or will I over power it with the "localer" Rockford channels? Hoping to install on the side of my house facing Chicago so the house can block Rockford and Madison channels.
High gain (30 dB) preamps overload easily; go with a medium gain preamp (18 to 22 dB) like the Antennas Direct Juice. The house blocking the Rockford signals will help a lot, but there will still be some reflections off objects in front of the antenna. Try it first without a preamp, then add it.
Do I need an LTE filter ( I see some of the CM amps have them integrated) if I can see a cell tower less than 1/4 mile away?
Possibly not. However, the Juice preamp contains an internal LTE filter, but no FM filter. Not all cell carriers will be using the frequencies just above channel 37.
Does it make more sense to just run a hd home run on the roof and run Ethernet into the house rather then coax?
Hold off on that; it's a last resort. Keep it simple at first; you might want to feed a TV tuner on one TV from the antenna.
Where do I put a power inserter then too.

Can power inserters be 50 feet downstream?
A preamp is designed to be close to the antenna. The power inserter is designed to be inside; 50 feet is OK. The coax that carries the signals down, also feeds the DC power up to the preamp.

If the antenna is outside, the coax shield should be grounded with a grounding block that is connected to the house electrical system ground with 10 gauge copper wire for electrical safety and to reject interference. For further compliance with the electrical code (NEC), the mast should also be grounded in a similar manner to drain any buildup of static charge which will tend to discourage a strike, but the system will not survive a direct strike.

Attached Images
File Type: jpg 98mystique2TVFreportRE.jpg (269.0 KB, 1020 views)
File Type: jpg 98mystique2TVFmap.JPG (71.0 KB, 1036 views)
If you can not measure it, you can not improve it.
Lord Kelvin, 1883

Last edited by rabbit73; 13-Apr-2019 at 2:03 AM.
rabbit73 is offline   Reply With Quote