Tuner sensitivity

Analoguesat

Anyone else find their 7020S tuner is insensitive? My 5 year old Echostar 3000 has a better tuner than the DB. With constant picture breakups on Enigma & Gemini images on all satellites last night (it was raining at the time but nothing that would have balked the Echo) the damn thing nearly went on Ebay!

Analoguesat's message to the world Analogue forever!

izefisherman

First:

The DM7020-S has been manufactured with two different tuners, the early ones using a Philips tuner, later ones have ALPS tuners fitted.

I have a DM7020-S with the Philips and a DM500S with the ALPS plus a C-Tech 2100 with the famous Sharp tuner.

On sats with only weak transponders and using normal symbolrates all three perform about the same.

On sats with both weak and strong transponders ALPS is the clear winner, Philips on a good second place and the Sharp is completely useless. With the same Antenna/LNB setup both ALPS and Philips provide Astra 2D viewing but Sharp fails even with the best possible signal levels from 2D. ALPS is a tad better when signals are at marigin.

For low symbol rates Sharp comes out as the winner. Down to SR 1000 is no problem even with weaker signals.

ALPS is a good second, also coping well with SR's as low as 1000 but needs a tad more signal than the Sharp to perform.

Philips is far better than many but not as good as above mentioned ones and sometimes locks on down to SR 1500 but this requires strong signals. All below perhaps SR 5000 generally requires a good signal to get a solid lock.


These results are by no means to be considered hard facts or the only truth, as only one receiving site, one antenna/LNB set and a single specimen of each tuner participated.

Ize

Analoguesat

Im finding it cant even get the merest sniff of the low symbol rate Fox Sports tp on 16E. My Echo at least has a go at trying to display it even though it breaks up badly.

Last night was hopeless. Ive got 4 different dishes (5E / 13E / 16E / 19E) and couldnt get a watchable picture on any of them. Its fine and sunny this evening so I'll give it another try.

Analoguesat's message to the world Analogue forever!

izefisherman

I also have breakups on Fox Sports on 16E from time to time with the 7020/Philips. Nat Geo was no problem at any time the Turkish/English version was FTA. The Fox Sport TP is significantly weaker here than the Nat Geo one, even if I'm well within the 50dBW footprint.

Fox 77-79% SNR (breakups if SNR is below 78%)
Nat Geo 86-88% SNR

I know these values are hard to compare but since a proper dB scale seems impossible to provide for most manufacturers...

Analoguesat

I went down the pub instead!

Analoguesat's message to the world Analogue forever!

Analoguesat

Thursday. Thin cloud, after a fine evening. No jitter evident.

Analoguesat's message to the world Analogue forever!

Lancelot

Back from the pub now then.




L.

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I've got an inferiority complex, but it's not a very good one.

Analoguesat

Yup - perhaps my eyes are jittering the other way in perfect harmony

Analoguesat's message to the world Analogue forever!

dig deep

watching tellie true a beerglass is always jittering

iceman

I have recently purchased a 7020S and mainly use it for SKY viewing...I have no idea which tuner it has inside but i can easily say,on weak 2D transponders it outperformed any Skybox i compared it with...

Analoguesat

Well my problems arent caused by the tuner sensitivity. I was getting 90% signal strength late last night & this morning, and total break up of the signals. Im going to reset the box back to it out of the box condition this afternoon and start again.

If that doesnt fix it then its going back.

Analoguesat's message to the world Analogue forever!