[Lowfer] Alpha on a degaussing coil

[Dexter McIntyre W4DEX]

Several have asked about the degaussing coil that I used to receive the Alpha 
signals.

The coil is the degaussing coil of wire removed from a CRT TV.  I think this 
type of auto degaussing coil was added to color sets made after the late 60s or 
so.  I suspect the TV service degaussing coils used in the early sets have much 
more wire and probably are self resonant way below 10 KHz.

Here's a pic, coil with LM386 audio amp:

http://www.w4dex.com/vlf/degaussing_coil_a.jpg

The audio amp is needed to receive Alphs with Winrad but not when using a SLM.

(An hour later)

I located a home brew degaussing coil I made in the 60s.  Back then color TVs 
didn't have built in degaussing coils so occasionally a color TV's CRT needed to 
be degaussed to keep the colors clean.  Especially when a high current device 
like a vacuum cleaner was turned on or off while near the set.  I'm sure 90% of 
the subscribers on this group already know that :)

Anyway this coil is self resonant at 5 KHz:

http://www.w4dex.com/vlf/degaussing_coil_b.jpg

Dex