kspore
02-18-2005, 02:54 PM
How much of a difference will an amplifier make on a cm4228 antenna in the attic?
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View Full Version : channel master 7777
mjones73
02-18-2005, 03:00 PM
It could help if you have any channels that are borderline signal strength...
kspore
02-18-2005, 03:09 PM
I can view the network analog channels but when I try to view the channels through the HD converter box (samsung sir151) I only receive pbs and pax.
mjones73
02-18-2005, 03:12 PM
Where is your antenna pointed towards, the Baltimore towers?
kspore
02-18-2005, 03:14 PM
No DC, It is about 31/32 miles to DC and about 33/34 to Baltimore
mjones73
02-18-2005, 03:18 PM
If your not getting any signal at all for the DC digital's, a pre-amp isn't going to help much. Putting that antenna outside would probably make a big difference though.
kspore
02-18-2005, 03:23 PM
My understanding with digital signals is that you either get a picture or not, there is no bad hd signals. I can get the analog signals with the 4228. The samsung sir151 doesn't have a percent signal meter.
Ratman
02-18-2005, 03:26 PM
Check www.antennaweb.org and cut and paste the results here so we can go an idea. Let us know is you want only digitals or both analog and digital.
Also, if you want both DC and Balto, you'll need a rotor. And... the 7777 is VHF/UHF and the 7775 is UHF only.
Also, if you want both DC and Balto, you'll need a rotor. And... the 7777 is VHF/UHF and the 7775 is UHF only.
Ratman
02-18-2005, 03:27 PM
You should get a meter reading with digital channels.
mjones73
02-18-2005, 03:37 PM
My understanding with digital signals is that you either get a picture or not, there is no bad hd signals. I can get the analog signals with the 4228. The samsung sir151 doesn't have a percent signal meter.
You need about 60% signal strength to lock in a digital channel, anything under that is not going to give you a picture. Having an STB with no meter makes it harder to determine if you're getting any signal at all or if you're getting one but it's under 60%. Only thing you can do is try the booster and see if it helps... You'd still be better off with the 4228 outside.
You need about 60% signal strength to lock in a digital channel, anything under that is not going to give you a picture. Having an STB with no meter makes it harder to determine if you're getting any signal at all or if you're getting one but it's under 60%. Only thing you can do is try the booster and see if it helps... You'd still be better off with the 4228 outside.
kevinw
02-18-2005, 04:02 PM
Couple of things. An amp will help with a weak station. You can loose 3-5 db of signal strength. inside an attic. Digital UHF stations are usuallly underpowered compared to the VHF counterpart. Is your antenna pointed in the correct direction.?
Technically you are correct in the sense digital is all or nothing but not quite. Either you get a signal or you don't. There is a threshold where the picture is stable or not...on most receivers it a reading of 60 or better. While you may be receiving it below that number the picture would be breaking up or freezing.
Technically you are correct in the sense digital is all or nothing but not quite. Either you get a signal or you don't. There is a threshold where the picture is stable or not...on most receivers it a reading of 60 or better. While you may be receiving it below that number the picture would be breaking up or freezing.
kspore
02-18-2005, 05:10 PM
yellow - uhf WFPT 62 PBS FREDERICK MD 220° 7.3 62
* green - uhf WFPT-DT 28 PBS FREDERICK MD 202° 9.2 28
blue - uhf WETA 26 PBS WASHINGTON DC 173° 30.8 26
blue - uhf WDCA 20 UPN WASHINGTON DC 173° 30.8 20
blue - uhf WNUV 54 WB BALTIMORE MD 115° 28.4 54
violet - uhf WNVC 56 IND FAIRFAX VA 186° 35.7 56
violet - vhf WJZ 13 CBS BALTIMORE MD 107° 33.6 13
violet - uhf WLYH 15 UPN LANCASTER PA 46° 74.0 15
violet - uhf WHTM 27 ABC HARRISBURG PA 25° 66.2 27
violet - uhf WHUT 32 PBS WASHINGTON DC 173° 30.8 32
violet - uhf WITF 33 PBS HARRISBURG PA 28° 69.5 33
violet - vhf WMAR 2 ABC BALTIMORE MD 107° 33.6 2
violet - uhf WMPB 67 PBS BALTIMORE MD 91° 26.9 67
violet - uhf WMPT 22 PBS ANNAPOLIS MD 137° 44.2 22
violet - vhf WUSA 9 CBS WASHINGTON DC 171° 32.1 9
violet - uhf WUTB 24 UPN BALTIMORE MD 115° 28.4 24
violet - uhf WWPB 31 PBS HAGERSTOWN MD 307° 41.3 31
violet - uhf WWPX 60 PAX MARTINSBURG WV 287° 42.4 60
violet - uhf WPMT 43 FOX YORK PA 49° 56.8 43
violet - uhf WPXW 66 PAX MANASSAS VA 194° 41.7 66
violet - uhf WFDC 14 TFA ARLINGTON VA 172° 32.7 14
violet - vhf WTTG 5 FOX WASHINGTON DC 171° 31.7 5
violet - vhf WRC 4 NBC WASHINGTON DC 172° 32.7 4
violet - vhf WBAL 11 NBC BALTIMORE MD 107° 33.6 11
violet - uhf WBFF 45 FOX BALTIMORE MD 107° 33.6 45
violet - uhf WBDC 50 WB WASHINGTON DC 166° 32.4 50
violet - uhf W44AA 44 PBS MARTINSBURG WV 287° 42.4 44
violet - uhf WJAL 68 IND HAGERSTOWN MD 324° 50.6 68
violet - vhf WJLA 7 ABC WASHINGTON DC 171° 32.1 7
violet - uhf WHP 21 CBS HARRISBURG PA 28° 69.4 21
violet - vhf WGAL 8 NBC LANCASTER PA 48° 56.5 8
violet - uhf WGCB 49 IND RED LION PA 56° 51.1 49
violet - uhf WHAG 25 NBC HAGERSTOWN MD 308° 41.3 25
* green - uhf WFPT-DT 28 PBS FREDERICK MD 202° 9.2 28
blue - uhf WETA 26 PBS WASHINGTON DC 173° 30.8 26
blue - uhf WDCA 20 UPN WASHINGTON DC 173° 30.8 20
blue - uhf WNUV 54 WB BALTIMORE MD 115° 28.4 54
violet - uhf WNVC 56 IND FAIRFAX VA 186° 35.7 56
violet - vhf WJZ 13 CBS BALTIMORE MD 107° 33.6 13
violet - uhf WLYH 15 UPN LANCASTER PA 46° 74.0 15
violet - uhf WHTM 27 ABC HARRISBURG PA 25° 66.2 27
violet - uhf WHUT 32 PBS WASHINGTON DC 173° 30.8 32
violet - uhf WITF 33 PBS HARRISBURG PA 28° 69.5 33
violet - vhf WMAR 2 ABC BALTIMORE MD 107° 33.6 2
violet - uhf WMPB 67 PBS BALTIMORE MD 91° 26.9 67
violet - uhf WMPT 22 PBS ANNAPOLIS MD 137° 44.2 22
violet - vhf WUSA 9 CBS WASHINGTON DC 171° 32.1 9
violet - uhf WUTB 24 UPN BALTIMORE MD 115° 28.4 24
violet - uhf WWPB 31 PBS HAGERSTOWN MD 307° 41.3 31
violet - uhf WWPX 60 PAX MARTINSBURG WV 287° 42.4 60
violet - uhf WPMT 43 FOX YORK PA 49° 56.8 43
violet - uhf WPXW 66 PAX MANASSAS VA 194° 41.7 66
violet - uhf WFDC 14 TFA ARLINGTON VA 172° 32.7 14
violet - vhf WTTG 5 FOX WASHINGTON DC 171° 31.7 5
violet - vhf WRC 4 NBC WASHINGTON DC 172° 32.7 4
violet - vhf WBAL 11 NBC BALTIMORE MD 107° 33.6 11
violet - uhf WBFF 45 FOX BALTIMORE MD 107° 33.6 45
violet - uhf WBDC 50 WB WASHINGTON DC 166° 32.4 50
violet - uhf W44AA 44 PBS MARTINSBURG WV 287° 42.4 44
violet - uhf WJAL 68 IND HAGERSTOWN MD 324° 50.6 68
violet - vhf WJLA 7 ABC WASHINGTON DC 171° 32.1 7
violet - uhf WHP 21 CBS HARRISBURG PA 28° 69.4 21
violet - vhf WGAL 8 NBC LANCASTER PA 48° 56.5 8
violet - uhf WGCB 49 IND RED LION PA 56° 51.1 49
violet - uhf WHAG 25 NBC HAGERSTOWN MD 308° 41.3 25
mjones73
02-18-2005, 05:15 PM
kevin, I'll warn ya, antennaweb does not like the Balitmore area for some reason, I'm 40 miles north of the towers and I get WNUV-DT, WJZ-DT, WBAL-DT, WBFF-DT, WMAR-DT, and WMPT-DT just fine but none of them show up on antennaweb when I check my location....
hd4me2
02-21-2005, 02:41 PM
No DC, It is about 31/32 miles to DC and about 33/34 to Baltimore
kspore, I live in Woodsboro, not that far from you. I also have the CM 4228 mounted outdoors and use a CM 7775 pre-amp. When I first put the antenna up I tried pointing for Balt. and DC stations and found because of the mountain range between our general area and DC that the Balt. stations were much more reliable.
I only live a few miles farther from the towers than you do but you will need to put the antenna outside or you'll be fighting it forever, I strapped mine to my chimney with hardware from Lowes. I also found that whenever the weather got nasty, rain, fog, drizzle, snow, sleet some channels were either right on the edge or disappeared completely. I added the CM 7775 pre-amp which solved the weather problem. I also get a few of the DC channels, I believe they are getting in through a sidelobe of the antenna that I have seen on the CM 4228 antenna patterns.
kspore, I live in Woodsboro, not that far from you. I also have the CM 4228 mounted outdoors and use a CM 7775 pre-amp. When I first put the antenna up I tried pointing for Balt. and DC stations and found because of the mountain range between our general area and DC that the Balt. stations were much more reliable.
I only live a few miles farther from the towers than you do but you will need to put the antenna outside or you'll be fighting it forever, I strapped mine to my chimney with hardware from Lowes. I also found that whenever the weather got nasty, rain, fog, drizzle, snow, sleet some channels were either right on the edge or disappeared completely. I added the CM 7775 pre-amp which solved the weather problem. I also get a few of the DC channels, I believe they are getting in through a sidelobe of the antenna that I have seen on the CM 4228 antenna patterns.
tigerbangs
02-21-2005, 04:14 PM
If you want DC AND Baltimore, you really need to:
1. Mount the antenna outdoors, up as high as possible
2. Get yourself a rotator: don't depend on a side lobe of the antenna to get reception from 30+ miles away
3. Add a Channel Master Titan 7777 (yes, the 7777, NOT the 7775) preamp
4. Sit back and enjoy pixelization-free DTV from Balitmore AND DC!
1. Mount the antenna outdoors, up as high as possible
2. Get yourself a rotator: don't depend on a side lobe of the antenna to get reception from 30+ miles away
3. Add a Channel Master Titan 7777 (yes, the 7777, NOT the 7775) preamp
4. Sit back and enjoy pixelization-free DTV from Balitmore AND DC!
hd4me2
02-21-2005, 05:27 PM
If you want DC AND Baltimore, you really need to:
1. Mount the antenna outdoors, up as high as possible
Always the thing to do!
2. Get yourself a rotator: don't depend on a side lobe of the antenna to get reception from 30+ miles away
This is true, just so happened things worked out for me that the sidelobe was in the right direction and strong enough.
3. Add a Channel Master Titan 7777 (yes, the 7777, NOT the 7775) preamp
We have no DTV on VHF, analog yes, why spend the extra $ on the 7777?
4. Sit back and enjoy pixelization-free DTV from Balitmore AND DC!
12345678
1. Mount the antenna outdoors, up as high as possible
Always the thing to do!
2. Get yourself a rotator: don't depend on a side lobe of the antenna to get reception from 30+ miles away
This is true, just so happened things worked out for me that the sidelobe was in the right direction and strong enough.
3. Add a Channel Master Titan 7777 (yes, the 7777, NOT the 7775) preamp
We have no DTV on VHF, analog yes, why spend the extra $ on the 7777?
4. Sit back and enjoy pixelization-free DTV from Balitmore AND DC!
12345678
tigerbangs
02-21-2005, 06:40 PM
"We have no DTV on VHF, analog yes, why spend the extra $ on the 7777?"
Not true, Harrisburg, PA has 2 VHF-DT stations, WHP-DT on Channel 4 and WHTM-DT on Channel 10. For about $5.00 more, buy the Titan 7777, or the Winegard AP-8275
Not true, Harrisburg, PA has 2 VHF-DT stations, WHP-DT on Channel 4 and WHTM-DT on Channel 10. For about $5.00 more, buy the Titan 7777, or the Winegard AP-8275
hd4me2
02-22-2005, 01:03 PM
That is true, Harrisburg does have DTV but at ~70 miles away in our very hilly and wooded terrain I doubt he'll have much of a shot at getting reliable/ any reception. I'm not saying don't try for it I'm just saying it's somewhat unlikely.
