Welcome to the forum, Jspyderr:
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The channels I want are (real) 10 (nm 3.1), 19 (nm 7.7), 28 (nm 3.0), 44 (nm5.5). Straight north of me. I am looking for the best antenna to pick up these channels......
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10 KOLR CBS, NM 3.1 dB
19 KSPR ABC, NM 7.7 dB
28 KOZL MyN, NM 3.0 dB
44 KYTV NBC, NM 5.5 dB
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channel master 4228HD.....and supposed to be ok on some high vhf
net gain channel 10 is 4 dbi
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That gain curve looks very bad; not to be trusted. The PCB balun isn't very good for VHF. The original 4228 did better on VHF.
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it looks like the hd7698p might be the best for me.
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I agree.
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I will be feeding 4 TV's.
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First you try it with one TV. Then you add a 4-way splitter. If you run out of signal, replace the passive splitter with a CM3414 distribution amp.
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do you think I will need a pre-amp? If so a strong one like cm7777 or a weaker one?.....Also channel 26 is fairly close to me, will this mess me up with a pre-amp
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You will need a preamp for your weak 2Edge signals, but a 7777 will be overloaded by 26.
7777 specs
Max input level 15 dBmV = -34 dBm
Max output level 40 dBmV
FM trap 88-108 MHz; >15dB
K26GS, -33.3 dBm Signal Pwr + antenna gain 14 dB = -19.3 dBm, OVERLOAD
7778 specs
Gain 16dB
Max input level 34 dBmV = -15 dBm
Max output level 50 dBmV
K26GS, -33.3 dBm Signal Pwr + antenna gain 14 dB = -19.3 dBm, OK
But -19.3 dBm + 16 dB preamp gain = -3.3 dBm, Tuner OVERLOAD
Looking at it by Noise Margin:
K26GS, Noise Margin 57.6 dB + 14 dB antenna gain = NM 71.6 dB, OVERLOAD
Interpreting Noise Margin in the TV Fool Reporthttp://www.aa6g.org/DTV/Reception/tvfool_nm.html
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are either of these antennas directional enough that it wont?
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The directional pattern will help attenuate 26 when the antenna is aimed North, but it might not be enough. CH 26 will be 74 degrees off-axis. Maybe down 15 to 20 dB.
If not, insert a Channel Plus NF-471 filter, and use KWBM for MyN.
NF-471: Notch Filter
Removes CATV channels 75-80 and UHF channels 24-29
Notch filter frequency 529.25 MHz to 559.25 MHz
24 530-536 MHz
25 536-542
26 542-548
27 548-554
28 554-560
29 560-566
http://www.markertek.com/product/cp-...FRKRfgodruUD5g
http://www.solidsignal.com/pview.asp...FZSFfgodGyIMLQ
http://www.amazon.com/Linear-NF-471-.../dp/B000J3AEYA
Pete Higgins using NF-471
http://forum.tvfool.com/showpost.php...2&postcount=40
I couldn't find a curve for the NF-471, but I did find one for the NF-469 which gives you the idea. Here is a case using the NF-469:
http://www.highdefforum.com/local-hd...ml#post1388901
Using your short coordinates, I did an FMFOOL report to see if there were any strong local FM signals that might interfere with TV reception. You have KCWD on 96.1 MHz with a signal power of -20.1 dBm. If the FM filter in the preamp doesn't take care of it, you will need to add an FM filter before the preamp input.
You can do a more accurate FM report here:
http://www.fmfool.com/index.php?opti...pper&Itemid=29