Feeling like I've joined the big boys club.....

Latest News and Discussion about the use of the DATV transponder on Es'hail-2
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g0nzo
Posts: 43
Joined: Tue Oct 20, 2009 6:30 pm

Feeling like I've joined the big boys club.....

Post by g0nzo » Mon Apr 20, 2020 11:05 pm

Well, I finally scraped together all the bits I've been collecting for ages and put them all in a row.
Managed to get my first TV signals through eshail.

I did put some lower rate signals through last week, but they were far too weak for me to receive on my 60cm dish. Though a couple of other stations were just able to decode them.
But a bit of extra gain in the drive and I was getting comforatable 1M sym DVBS2 signals through, and almost at the same level as the beacon.
If I had a better RX dish set up, I reckon I could have got 2M sym to go.

I really have no idea what my power levels are? I'd guess 10watts ish?

Next stop, 8M sym? Can we ask the beacon to qsy?

Jules

g0mjw
Posts: 2330
Joined: Sat Sep 20, 2014 9:15 am

Re: Feeling like I've joined the big boys club.....

Post by g0mjw » Tue Apr 21, 2020 6:30 am

Hi Jules,

Congratulations. Let me know when you are on next.

I rarely need more than 10W, typically 5W for 333ks QPSK, 10W for 8 PSK. 20w is good for 2 Ms QPSK 1/2 FEC. So with your dish, theoretically 2 dB better but in practice a bit less, so you are probably running 10-20W at the moment.

The 3M dish was rated for Ku band, it won't be great I suspect but it might be better than the 60cm with a dual band feed. Yonu could always consider placing a more accurate dish in the centre of it if you have one. Best price/performance seems to be about 1.2m. After that it's diminishing returns on RX. Of course the more gain on TX the better.

Mike

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