powering a LNB through a MiniTiouner V1.0

[i2NDT]

at last I am almost ready to receive Es'hail-2 with my MiniTiouner V1.0 - Sharp NIM.

I noticed that LNBA (Sharp tuner pin 2) goes to J4 pin 1 and I guess that I can give to this pin 12 or 18Volts according to the polarization I want: am I correct?

for the Es'hail-2 DATV feed, which is Horizontal, it will be 18V.

I wonder if it is worth to insert in the line (in serie with D1) a fuse or a PTC similar to FS1 (MC36187).


73
de
i2NDT Claudio

[G8GKQ]

Yes Claudio

That's the right pin for 18v. A fuse or polyfuse is almost essential here. It is very easy to blow up the internal RF choke.

Dave

[i2NDT]

thanks Dave!
but now I have a big problem...
I think I have "fried" somehow my Sharp tuner as Minitioune does not see it and when I measure the voltage at TP1v I have 1.45 V istead of 1...
if I remove the tuner I measure 1.00 V ...

Claudio