Forum: Reception Devices
28-Jan-2012, 10:28 AM
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Replies: 9
Views: 36,367
So is this right ?
First thanks for your responses.
My strongest local station is -16 dBm (from my radar plot)
If I point a 23 dBi antenna at it that gives me a +7 dBm signal at the mast, so less than 2 dB of...
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Forum: Reception Devices
27-Jan-2012, 2:28 AM
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Replies: 9
Views: 36,367
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Forum: FM Fool Discussion/Database Updates
26-Jan-2012, 8:19 PM
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Replies: 29
Views: 109,592
biquad for cell phone
The short answer is Yes (but not that one)
This site is old ( first I ever heard about nec modeling software and before 802.11 g came out)
Scroll to the bottom of the page....
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Forum: Help With Reception
22-Jan-2012, 3:28 AM
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Replies: 7
Views: 20,084
Just a suggestion
Most all band antennas have higher gain and narrower beam in the UHF and lower gain and wider beam on VHF.
So miss aiming the antenna a little (while you're doing your channel scan) may hurt the...
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Forum: Enthusiast's Exchange
20-Jan-2012, 8:22 PM
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Replies: 30
Views: 100,318
Log periodic dipole arrays (LPDA) have dipoles...
Log periodic dipole arrays (LPDA) have dipoles of different lengths. And only 2-4 are used by any frequency. That is as the frequency increases the active region of the antenna shifts toward the...
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Forum: Help With Reception
20-Jan-2012, 5:38 AM
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Replies: 11
Views: 19,561
best whisker
That would depend on your desires.
If you want highest gain deep fringe type then go for an 8 bay.
In general longer wider spaced whiskers are better for low channels/frequencies shorter closer...
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Forum: Antennas
19-Jan-2012, 7:36 PM
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Replies: 19
Views: 261,390
If you disregard those recomendations
Here's a site along the same lines.
You can see what happens if you stack at non-optimal distances or get one of your leads reversed/crossed.
How to use the graph is a little hard to follow until...
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Forum: Help With Reception
16-Jan-2012, 4:03 AM
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Replies: 11
Views: 19,561
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Forum: Enthusiast's Exchange
16-Jan-2012, 3:02 AM
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Replies: 19
Views: 66,240
very E-Z parabola reflector
Built about 20 comparable models (different shapes and feeds but similar sized) and have found an lpda feed that makes a great feed for a parabola.
It won the gain and swr contest for all shapes I...
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Forum: Enthusiast's Exchange
16-Jan-2012, 2:32 AM
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Replies: 8
Views: 21,612
little update
Actually the boost is 3 dB only if both ends have an "axial ratio" (the ratio of horizontal to vertical signals) of 1 equal horizontal and vertical signals.
again the axial ratio affects how...
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Forum: Enthusiast's Exchange
16-Jan-2012, 2:17 AM
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Replies: 22
Views: 108,981
New tuner boxes
I've asked around on forums devoted to FTA and there are 10+ year old tuners still in use,
Don't be confused that it's satellite FTA is not for getting free subscription TV services ( HBO cable...
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Forum: Antennas
16-Jan-2012, 2:10 AM
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Replies: 24
Views: 174,103
Very interesting
I wonder if this is the...
Very interesting
I wonder if this is the signal level from the tuner or is it viewable 80% of the time. Either answer seems to contradict "common wisdom" of what signal level is receivable....
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Forum: Enthusiast's Exchange
31-Dec-2011, 7:01 AM
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Replies: 22
Views: 108,981
Now I'm confused. So the listings here
...
Now I'm confused. So the listings here
http://www.whatsonfta.net/FTA-Channel-List.php?satellite=AMC%203 for "THIS" "METV" "CWTV detroit" are not there, not receivable, not what I...
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Forum: Antennas
24-Dec-2011, 8:45 AM
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Replies: 24
Views: 174,103
There were patterns that I thought were more...
There were patterns that I thought were more heat/cool air turbulence scatter type.Looking back they seem pretty sharp daily time wise.
That would explain a lot.
Power lines are that noisy? Is...
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Forum: Enthusiast's Exchange
24-Dec-2011, 6:07 AM
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Replies: 22
Views: 108,981
not encouraging
I've considered adding an fta system.
So I'm curious
BryGuy460 could you explain going down or dropping? And why would you buy a new box every year?
And to get more responses to the IPTV device...
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Forum: Antennas
21-Dec-2011, 6:25 AM
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Replies: 24
Views: 174,103
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Forum: Antennas
16-Dec-2011, 5:41 AM
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Replies: 14
Views: 40,192
I want one
The model I'm looking to get is the http://www.kitztech.com/
Model KT-100VG TV Antenna Booster Standard Version
The one with variable gain and separate power input (not through the coax)
I would...
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Forum: Help With Reception
12-Dec-2011, 6:31 AM
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Replies: 20
Views: 32,128
Thanks guys
Thanks for straightening that out for me.
I see . I'm less than 2 miles inside the vhf ring
So this means the tv fool signal data for this channel is off by ~30% and the signals for whbf maybe...
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Forum: Enthusiast's Exchange
11-Dec-2011, 4:15 AM
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Replies: 8
Views: 21,612
helical antennas
I have to agree with be236 at least somewhat I found rabbit ears site confusing at first to. Thanks for the tip there Dave I didn't realize that was a link I thought it was just a drop down. But...
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Forum: Enthusiast's Exchange
10-Dec-2011, 7:50 AM
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Replies: 6
Views: 19,222
I am on a quest to optimize my reception.
...
I am on a quest to optimize my reception.
Commercial antennas mostly leave me cold, the manufactures have a vested interest in hiding the flaws/weaknesses of their designs and seem to excel at...
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Forum: Help With Reception
10-Dec-2011, 6:53 AM
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Replies: 20
Views: 32,128
Are my results unusual?
No static at all said:
Really is that the consensus of all?
Because I have a channel 4 (I think) WHBF about 77 miles away with 3dB lower NM and dBm values than these and I pull in a signal...
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Forum: Help With Reception
10-Dec-2011, 3:49 AM
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Replies: 11
Views: 19,854
two http's
I think the link should be http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3d403363519e666d
does this look like your analysis page Brutismax ?
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Forum: Help With Reception
9-Dec-2011, 6:31 AM
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Replies: 16
Views: 22,644
3dB loss from 2:1 SWR
I know the actual lose from a swr of 2 is only 0.5 dB but the digital signal is more
fragile to the effects of high swr than old analog signals were, due to error
vector magnitude high swr can...
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Forum: Enthusiast's Exchange
5-Dec-2011, 12:41 AM
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Replies: 6
Views: 19,222
VHF high for the 21 dBi quad stack
I noticed you didn't post the gains at vhf high for the quad stack above.
Freq net gain
177 7.37
183 7.81
189 8.29
195 8.69
201 9.19
207 9.31
213 9.90
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Forum: Help With Reception
28-Nov-2011, 11:54 PM
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Replies: 28
Views: 37,240
reflector
So ADTech, the 35.5 inch rod on the c2v is not connected to the feed line?
Like wide reflectors on whisker type (4/8 bays) give some VHF sensitivity?
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