Antennas for System BLUE - Mini Guide

[LaurentB]

Thanks Richo,

I'll start with a 60cm diameter, 12 turns.

Hope I'll be soon at position 1 in blue queue

Laurent

[BertSP]

Just received my Blue. I just want to verify my understanding of the jumpers for the ferrite antenna. If ferrite, I do NOT solder the jumpers? Solder only if using Loops.

[allsorts]

Correct.

Oh pooh "correct" is too short an answer!

[BertSP]

Correct.

Oh pooh "correct" is too short an answer!

My assembly on a Blue is finished. The (stupid) question I now have is how to properly connect the two ferrites to the amp. Is it +1 and Ground or +1 and -1.  The pattern will be the same for ferrite 2... My signals seem all to have a +0.04v bias to them, both on the E and H signals.  My station is 1691.  I do have the proper shielded cables.

[allsorts]

Loops or ferrites connect to the + and - terminals on the preamp.

A small positive offset of a similar size on all channels is a normal "feature". Mine is +30 mV +/- 10 mV.

Occasionally Ch1A will jump to -190 mV but this isn't reflected on the controller status pages. However I have just noticed that it is included in the strike data uploaded to Blitzortung.