AV multiband VLF receiver

[fmnotes]

Originally Posted by WM6

200uF exist in receiver schematic (not in transmitter). Not ceramic but electrolyte. Look at my previous answer again.

THANK YOU VERY MUCH FOR THE HELP.
BE WELL.

[WM6]

Originally Posted by fmnotes

THANK YOU VERY MUCH FOR THE HELP.
BE WELL.

Of course use of bipolar C is better (here how to build your own out of two equal unipolar):

http://s3.amazonaws.com/readers/2011...apacitor_1.jpg

[fmnotes]

Originally Posted by WM6

Of course use of bipolar C is better (here how to build your own out of two equal unipolar):

http://s3.amazonaws.com/readers/2011...apacitor_1.jpg

Yes I know him, but in I thank for your time.
A question, you know how much coils of wire does need the aerial ferrite?

[WM6]

Originally Posted by fmnotes

A question, you know how much coils of wire does need the aerial ferrite?

I cannot say, it depend on ferrite rod used.

But you can establish approximate number of turns this way:
Turn up ten turn of wire on your ferrite rod.
Measure inductance of those windings.
Divide 57mH by measured inductance (expressed in mH) and then multiply results by 10.
End-result is your approximate number of turns needed.

[fmnotes]

Originally Posted by WM6

I cannot say, it depend on ferrite rod used.

But you can establish approximate number of turns this way:
Turn up ten turn of wire on your ferrite rod.
Measure inductance of those windings.
Divide 57mH by measured inductance (expressed in mH) and then multiply results by 10.
End-result is your approximate number of turns needed.

Yes I thank, you have right.

[fmnotes]

I CAN USE DIODE OF GERMANIUM 0A95 OR 1N60 ? FOR THE OA91?
THEY IS SAME?

[WM6]

Originally Posted by fmnotes

I CAN USE DIODE OF GERMANIUM 0A95 OR 1N60 ? FOR THE OA91?
THEY IS SAME?

Yes, you can both.