Tip: Improve dish signal reception with a funnel
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Tip: Improve dish signal reception with a funnel
#1
Dear Friends,
I always had an issue with some weak Dishtv transponders of NSS6 satellite.
The signal was not consistent and often there was picture freezing.
My dishes are installed in the home balcony itself to facilitate alignment and testing on my TVs.
Then I attached a plastic funnel to the mouth of the feed-horn of the LNB like the conical scalar ring my C-band dish has.
There was a considerable increase in signal quality and no outage as it happened before.

Using a Metal funnel will give better results.
Also make sure the smaller edge of funnel co-incides with the white plastic part of the LNB feed-horn mouth. Try it.

[Image: 7cJUk.jpg]

[Image: 391840_201037773314681_100002253792345_4...3639_n.jpg]

[Image: FrAwZ.jpg]

[Image: ALaq6.jpg]


Regards,
Vinay K .........___/(>)))
Satellite Systems, Electronics & Cable TV Specialist
#2
18% signal increase after fixing the funnel did u try with some metal funnel?
#3
How plastic increased signal?
#4
Vinay thanks for interesting experiment,but can you tell what was the time of the experiments and the timing of taking pictures.Were these both snaps of signal taken at a time or was there difference.please let us know.
#5
(Friday 16-December-2011, 18:07)Beghawat Wrote: 18% signal increase after fixing the funnel did u try with some metal funnel?

Yes I tried metal Conical Scalar Ring on my C-band LNBF. On Ku-band LNB, this plastic funnel works fine, so I did not put metal funnel on that.


Regards,
Vinay K .........___/(>)))
Satellite Systems, Electronics & Cable TV Specialist




#6
(Friday 16-December-2011, 18:37)DTHGuide Wrote: Vinay thanks for interesting experiment,but can you tell what was the time of the experiments and the timing of taking pictures.Were these both snaps of signal taken at a time or was there difference.please let us know.

The time taken for this experiment was less than 2 hours for cutting, fixing and taking screenshots and clicking pictures.
The difference in time for both snaps of signal screens was 1 hour.

#7
Dear Vinay_Kumar,
in the before picture your signal is low,so was it the signal you were getting at maximum effort?
#8
(Saturday 17-December-2011, 20:29)ravi Wrote: Dear Vinay_Kumar,
in the before picture your signal is low,so was it the signal you were getting at maximum effort?

Yes even after all Azimuth, Elevation and LNB Skew efforts, I got just 35 to 50% signals. Then after seeing an Invacomm LNB with a conical feed-horn, I tried this and it works great even now.

Also a similar metallic conical scalar ring is used for my C-band dishes.

#9
signal increased like this in cband dish also?
#10
(Monday 19-December-2011, 09:24)motwani Wrote: signal increased like this in cband dish also?

Yes Motwaniji,
Signals in C-band Dish also increases by 10% to 15%.


Regards,
Vinay K .........___/(>)))
Satellite Systems, Electronics & Cable TV Specialist


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