Small Express-Vu dish works fairly well on 97 W

[polgyver]

Hi, everybody,
Due to health issues (planned surgery and un-planned heart problems) I was forced to suspend my FTA activity for a few months.
Now, things seem going better, so, we accepted our friends' invitation to their cottage, where I installed - on a tree - small Express - Vu dish.
Transponder 12184 has fairly strong signal, but RT transponder is much weaker.
It makes me wonder, why ? Both programs have polarization H. Any explanation ?
Pictures follow.

 

[lost_mesa]

Great to have you back polgyver. Sorry to hear about the health problems. I hope you recover quickly.

I'll take a look at those signals here later.

 

[lost_mesa]

For me 12,184 H is 1.4 dB stronger than 12,152 H. Probably not as big a difference as you are seeing. BTW, what size dish is that?

 

[KE4EST]

Hello polgyver glad you are back. I hope all the health issues continue to get better.
I enjoy your projects!

 

[turbosat]

Why not! A neat project, differences in locations in N America prob explain why some tps are stronger than others. Some you might attribute to lnbf skew.

 

[FTA4PA]

Glad you are back! Enjoy seeing your work. Hope your health continues to improve!

 

[Titanium]

Welcome back!

Not all transponders are run at the same power level. The uplinker establishes a link budget based on the needs of their client (signal up-time, priority, footprint, downlink equipment aperture/efficiency/etc) and target budget. A lower power signal, lower priority, or reduced footprint reduces cost. A more powerful signal reduces the life expectancy of the satellite and the owner charges a higher cost for the bandwidth.

The transponders on 97w KU are typically for multiple services combined into a mux that are uplinked by a third party or the bandwidth is resold by a broker. The actual bandwidth cost may be divided and passed on to the individual services or to create a profit/loss for the uplinker/broker business.

 

[polgyver]

BTW, what size dish is that?

Its width is 24" and height is 26 "

 

[danristheman]

Is that the same as a Dish 500 in the states?

 

[KE4EST]

Is that the same as a Dish 500 in the states?

No this dish would be the equivalent of a DISH 300.

 

[Cham]

Glad to hear from you Polgyver!
I have used a 24" round BEV dish for FTA on 97w and it worked but somewhat marginal. Some TPs were usable and others would break up too much to watch. Your dish is a smidgen larger..

 

[jorgek]

Good to have you back. This issue will go away as soon as the snow starts to fly. Most likely your friends close up the cottage for the winter. But a larger dish is the solution.