Hello and welcome back to my channel.
This video shows my "standard" modification of a MEGASAT DiavoloTwin Gold LNB v3 with NXP chip. While the LNB has a "butterfly oscillator" and needs for best performance a 0° + 180° Phase Signal, it is necessary (easiest mod) to use a balun. All about the balun you see and read in the video.
After the modification don´t forget to put new sealed to the LNB to keep it safe from negativ influences. I do this with high temperatur sealed from our Car store. Not the cheapest but it works perfect. If you need more info about that, write in the comments.
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Sandor
DM4DS
There is a "directors cut" version without the 3 little jumps you see in this video...
The non-jumping video URL: • MEGASAT Diavolo Twin L...
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0:00 Einleitung
0:10 Removing original 25MHz XTAL
2:06 Desoldering connector for external reference input
4:06 The BALUN is made on ferrite toroid 4.1mm outer diameter by 2mm inner diameter.
4:34 Ferrite toroid material is 67 with a permeability of 40. Primary and secondary winding are turns each.
5:41 Soldering the BALUN' secondary wires in place of the XTAL
7:23 Soldering the BALUN' primary wires. One to ground, one goes to the reference input trough a capacitor.
8:37 Soldering 1 uF SOV X7R SMD capacitor on the input pin of the F connector
9:32 Soldering the remaining free BALUN primary wire to input capacitor.
11:14 Insulating contacts with some adhesive tape strips.
11:54 The modification is done!
13:22 Don't forget to re-seal the LNB against atmospheric agents with silicone sealant.