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OTA Reception Files
Downloadable Files re On-The-Air Reception - by holl_ands

Includes DTV Antenna Specs (and measured Performance), measured Balun Loss, measured RF Splitter Loss & RG-6 Cable Loss Specs.

Also includes ATSC/NTSC Tuner Specs and Preamp Specs, plus a DTV Signal Overload Calculator and a Third Order Intermod Calculator.

UPDATE (24Mar2009): Updated DTV Interference Calculator Rev C.

UPDATE (26Mar2010): Added CECB Features List - mod 26Mar2010.

UPDATE (14Aut2011): Updated DTV Interference Calculator - Rev F.

UPDATE (12Sep2011): Updated DTV Preamp Signal Overload Calculator - Rev L to add VHF specific calculations.

UPDATE (25Sep2011): Updated "Preamp Comparison Chart - Rev A", due to W-G change to HDP-269 Max Input Spec.

UPDATE (13Mar2012): Updated "DTV Preamp Signal Level Overload Calculation - Rev M".
Fixed typo in W-G specs for 19 dB Gain Preamps - 99.4 dBuV vice 89.5 dBuV.  Calculations not affected.

UPDATE (21Nov2012): Added five Spread Sheets (*.xls or *.xlsx) with Raw Data from various 4nec2 runs
that were used to prepare the Antenna Performance Charts used throughout this website.
If marked with one or more X's, the data has either been superseded by an alternative run and/or it
might have an unspecified PROBLEM...so ignore it.

UPDATE (1May2013): In my Modification to solidsignal's Preamp Comparison Chart, corrected AP-2870 Max Input to reflect (29Jan2010) update to Winegard Preamp specs.

UPDATE (10May2013): Added Interior Photos of Winegard AP-8700 and HDP-269 Preamps.

UPDATE (25Jul2013): Updated "DTV Preamp Signal Level Overload Calculation - Rev N" to reflect new W-G LNA200's ASSUMED 20 dB improvement in UHF Max Input compared to AP8700.

UPDATE (20Nov2013): Added Chart showing RS 15-00396 4G_LTE Low Pass Filter Loss.

UPDATE (19Apr2018): Added Charts showing Measured Insertion Loss for various Ferrite and PCB Baluns.

UPDATE (7Feb2019): Added Charts showing Measured Insertion Loss for various FM Band Reject Filters.
Date(s): 3 Feb 2009. Album by holl_ands. 1 - 44 of 44 Total. 17812 Visits.
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Enlarge Microsoft Excel Spreadsheet 1
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XLS1
DTV Antennas Rev E
Compare Manufacturer Specs & Tested Performance


Enlarge Microsoft Excel Spreadsheet 2
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XLS2
Belden RG-6 & RG-11 Cable Loss Specs

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3
Belden RG-59, RG-6 & RG-11 Coax Loss Chart

Enlarge Microsoft Excel Spreadsheet 4
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XLS4
ATSC & NTSC Tuner Module Specs

Enlarge Microsoft Excel Spreadsheet 5
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XLS5
CECB Feature List - mod 26Mar2010.xls

Enlarge Microsoft Excel Spreadsheet 6
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XLS6
COMPARE System Noise Figures
With and Without Preamps


Enlarge Microsoft Excel Spreadsheet 7
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XLS7
DTV Preamp Signal Overload Calculator - Rev M

Calculate Max Input Signal to Maximize
SFDR (Spurious Free Dynamic Range).


Enlarge Microsoft Excel Spreadsheet 8
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XLS8
DTV Interference Calculator - Rev G

Enter up to five channels to see which
channels are affected by (3 channel wide)
Third Order Intermods.

Strong channels also block weak adjacent channels


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9
Preamp Performance Summary
Measurements by Calaveras - posted 28Nov2015

Presumably for Two Strong Input Signals.
Max Signal Input and Output
would need to be DERATED:
3 Signals: -3.6 dB
4 Signals: -5 dB
5 Signals: -6 dB
6 Signals: -7 dB
8 Signals: -8 dB
Ignore signals more than 6 dB below the Strongest.


Enlarge Microsoft Word Document 10
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DOC10
Modified www.solidsignal.com Chart Comparing Preamps - RevB

Added columns listing Max Input Signal for
Maximized SFDR (Spurious Free Dynamic Range).

RevA: W-G revised HDP-269 Max Input Spec
from 350,000 to 150,000 uV.

RevB: Changed back to HDP-269 max Input Spec of 350,000 uV and corrected AP-2870 per 110,000 uV vice old spec value of 10,000 uV.


Enlarge Microsoft Excel Spreadsheet 11
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XLS11
Old Preamp Specs - Rev B

Enlarge Microsoft Excel Spreadsheet 12
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XLS12
UHF Antenna 4nec2 Sim Charts RevJ.xls

Enlarge Microsoft Excel Spreadsheet 13
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XLS13
Hi-VHF Antenna 4nec2 Sim Charts RevI.xls

Enlarge Microsoft Excel Spreadsheet 14
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XLS14
UHF_HiVHF_STACKED Antenna 4nec2 Sim Charts - RevG.xls

Enlarge Microsoft Excel Spreadsheet 15
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XLS15
Winegard YA-1713 4nec2 Sim Charts.xls

Enlarge Microsoft Excel Spreadsheet 16
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XLS16
Hi-VHF Yagi vs Zig-Zag Performance Curves - holl_ands RevD.xlsx

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17
Channel Master SPARTAN Preamp Circuit Board

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18
Channel Master SPARTAN Preamp - Reverse

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19
Winegard AP-8700 Preamp
Top of Circuit Board


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20
Winegard AP-8700 Preamp
Bottom of Circuit Board


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21
Winegard HDP-269 Preamp
Top of Circuit Board


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22
Winegard HDP-269 Preamp
Bottom of Circuit Board


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23
Original CM7777 Preamp
Bottom of Circuit Board


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24
Original CM7777 Preamp
Top of Circuit Board


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25
Original CM7777 Preamp
VHF/UHF Selector Switch Detail


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26
PS-0747 Power Insertion Module Schematic
for Original CM7777 and Spartan Preamps

Posted by rabbit73


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27
RS 15-00396 4G_LTE Low Pass Filter Loss
Posted by ADTech, 27Nov2013

Note Significant Loss on Higher Channels,
Do NOT use unless you are SURE you NEED it.


Enlarge Microsoft Excel Spreadsheet 28
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XLS28
Balun Loss using TWC-SD Freqs - Rev B

Enlarge PDF 29
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PDF29
Philips Ferrite Outdoor Balun Loss:
UHF: 0.5 to 0.9 dB (470-698 MHz)
Hi-VHF: Under 0.6 dB, Lo-VHF: Under 0.7 dB

Measurements by Johnrmckee (18Feb2009)


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30
Ferrite Balun Insertion Loss
Used in older A-D 91XG Antennas
Loss for TWO Back-to-Back Units:
1.15 to 1.7 dB each (470-698 MHz)

Measurements by Calaveras, Aug2019


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31
Ferrite Balun Loss Comparisons
Loss for TWO Back-to-Back Units:
CM94444 Outdoor Balun Loss:
UHF: ~1.2 dB
Hi-VHF: ~1.0 dB
Lo-VHF: ~0.4 dB

Measurements by ADTech


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32
UP2A PCB Balun Loss
Used in A-D UHF C2 and C4 Antennas
Loss for TWO Back-to-Back Units:
0.6 to 0.9 dB each (470-698 MHz)

Measurements by ADTech


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33
UP2A-6 PCB Balun Loss Variation
Used in A-D Hi-VHF C5 Antenna
Loss for TWO Back-to-Back Units

Measurements by ADTech


Enlarge PDF 34
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PDF34
FM Band Reject Filter
Tin-Lee CH7 CH.FM 40 FM Bandstop Frequency Response


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35
FM Band Reject Filter
MCM 33-334 FM Band (88-108 MHz) Loss

Measurements by tripelo
on 12 separate samples


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36
FM Band Reject Filter
MCM 33-334 Hi-VHF Band (174-216 MHz) Loss

Measurements by tripelo


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37
FM Band Reject Filter
MCM 33-334 Hi-VHF Band (174-216 MHz) Return Loss

Measurements by tripelo


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38
FM Band Reject Filter
To allow Ch6 Reception, Radio Shack 15-024 has
minimal attenuation on low FM Freqs

Measurement by ADTech


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39
FM Band Reject Filters
Antennas Direct vs (old) Radio Shack 15-377
To allow Ch6 Reception, R-S 15-677 has minimal
attenuation on low FM Freqs [15-377 is typo]


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40
Freq. Response for four VHF/UHF Diplexers
Center is 100 MHz with 10 MHz/Div
Zero Loss is middle with 10 dB/Div
So FM Band is ~1/2 division on either side of Center

Measurements by ADTech


Enlarge PDF 41
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PDF41
Digital Planet 2-Port RF Splitter/Combiner
Loss Measurements
Using Cable Box Diagnostic Display
as a Signal Level "Meter" [+/- 0.5 dB]
By holl_ands, Nov2004


Enlarge Microsoft Excel Spreadsheet 42
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XLS42
2 + 4-Port RF Splitter/Combiner Loss - Rev B
By holl_ands, Jan2005


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43
W-G SD-3700 2-Way Splitter/Combiner Loss
By Tripelo, Nov2011


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44
RF Splitter Loss, Isolation & Return Loss
By ADTech, Jul2014


 
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  Sign the Guestbook. Displaying 3 of 3 entries.
Great stuff,here...thanks!
 - 
Michael P. Koryciak, Sun, 14 Jul 2019 9:43PM
Great stuff!
 - 
Brian Hudgins, Thu, 27 Nov 2014 2:41PM
Fascinating collection of valuable information & tools for those of us RF EE challenged. Very much appreciated.
 - 
Pete Higgins, Wed, 27 Mar 2013 10:10PM