Just Sharing This Invacom 0.3 vs. Inverto Black 0.2 (C120)

[s-band]

Since many seem to like the Inverto and my Invacom suffers from serious microphony, I decided to try a Ku Inverto Black, single output, C120, LNB.
On 10E (possibly catching some 9E?), IRTE PF 1.5m, IRTE feed, TBS6983, EBSPro v16, Blindscan 2, tests 20mins apart, dish not moved.
Invacom 89 TPs, 11.1dB SNR average of all TPs
Inverto 96 TPs, 11.4dB SNR average
Zip file of .XML files attached

Based on a sample of 1, the Inverto looks a bit better than an old Invacom.

 

[archive10]

Very nice to have some fresh data!

IIRC this is very similar to my own results some years ago (last year? previous? It's all a blurring )
So credible data, even if based on a sample size of 1...

What my test did not show was the specific ability to handle x-polarisation interference - i.e. some sats (like Astra 2G, I believe) use the same frequency for H and V, and this is supposedly where the Global Invacom (as it is now) should shine.
Similarly, with larger f/D dishes (like some prodelins (also seen as Via Sat)), you get supposedly better X-polar discrimination.
Maybe some day in the summertime, when the weather is fine... (sorry, Jerry)

 

[s-band]

I checked X polar rejection on the Inverto using the 10E beacons:
10950 H -20dB in V
11699.8 H -24dB in V
12501 H -21dB in V
12501.5 V -20dB in H

When I put the new LNB back I didn't tweak the skew very carefully, there may be more to be had. The dish's X polar rejection is here Just Sharing This - IRTE Dish Specifications, if you can see the scale. Interesting to note that a small tweak of position could improve X polar without losing much of the wanted signal.

I noticed that there was about 500kHz load pull frequency change switching polarisation (not uncommon with DRO)

 

[Anonymous_1]

Do you have almost the same 'difference' if you test them on your CM 1.80

I have better result with Invacom/CM Feed instead of the Inverto/CM feed. (I mean better in Frequencies locked for "hard" DX)

On the laminas, The Inverto or the Octagon are better.
in my case...

 

[s-band]

Do you have almost the same 'difference' if you test them on your CM 1.80

I have better result with Invacom/CM Feed instead of the Inverto/CM feed. (I mean better in Frequencies locked for "hard" DX)

On the laminas, The Inverto or the Octagon are better.
in my case...

My CM1.8 is in the shed at the moment, I hope to get it outside soon. The Invacom was the best LNB I had, apart from the SMW LNA/BDC combination. Here are some results from a previous comparison that included the same Invacom. Just Sharing This - Invacom 0.3dB vs. Octagon PLL vs. SMW PLL Ku LNBs

However, the Invacom was a pain at times as it is so microphonic. Nudging the dish would unlock the RX due to a few MHz FM deviation caused by the vibration of the motor etc. Any loud noise e.g. garden machinery would degrade the signal.

 

[Anonymous_1]

OK, thanks for your reply and the link for reminder.

 

[Terryl]

Invacom would have replaced the LNB for free if you had contacted them, my Invacom suffered some bird damage, a wood pecker poked a hole into the front of the LNB, sent a photo to Invacom and they asked for my mailing address, I got a new one for free.

And never had a Monophonic problem with an LNB before, new one on me.