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Old 4-Oct-2019, 12:58 AM   #33
ckwsp101_tv
Junior Member
 
Join Date: Feb 2015
Posts: 27
Long time no post.

https://www.rabbitears.info/searchma...study_id=16913

http://www.tvfool.com/?option=com_wr...9038b74b56328c

Attempted to trim tree branches on my property.
No improvement on RF 12 reception.

I was able to get KNTV content from alternative RF 49 transmitter.
So I did not do much until this summer.

RF 7 and RF 12 signal quality continued to degrade.

Replaced baluns twice on the 2 stacked y10-7-13s resulted in improvement on RF 7.
Still no lock on RF 12.
Silicondust needs signal quality of 50% or better to lock.

HDhomeRun Config
RF 12
ss 75%
sq 43%

As experiment I converted my vertically stacked Y10-7-13 to a horizontal layout using saw horse next to
antenna mount.
Trial and error horizontal distance between the antennas.


11.1 (RF 12) finally locks with horizontal layout.
Silicon Dust
ss 81%
sq 60%

RF 7
ss 98%
sq 85%

RF 12 right at digital cliff.
Over time the best spot on roof for RF 12 changed. I may need a separate location and mount for RF 12 longer term :<

Quality of retail baluns not very good. Maybe I need to make home made versions for y10-7-13 array.
So far RCA pre-amp still working. If I need to replace I will consider combining UHF and VHF feeds and use Antennas Direct Juice pre-amp.

Found on Silicondust forum

Code:
SS%  dBmV
0%   -60 dBmV
5%   -57 dBmV
10%  -54 dBmV
15%  -51 dBmV
20%  -48 dBmV
25%  -45 dBmV
30%  -42 dBmV
35%  -39 dBmV
40%  -36 dBmV
45%  -33 dBmV
50%  -30 dBmV
55%  -27 dBmV
60%  -24 dBmV
65%  -21 dBmV
70%  -18 dBmV
75%  -15 dBmV
80%  -12 dBmV
85%   -9 dBmV
90%   -6 dBmV
95%   -3 dBmV
100%   0 dBmV

Last edited by ckwsp101_tv; 6-Oct-2019 at 5:11 PM. Reason: update tvfool link
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