Has anyone ever seen or can point us to a decent treatise on identifying
UFOs? That would be: Unidentified Ferrite Objects.
Yes, I can throw a few turns on a UFO and sweep it and zero in on the
material, maybe make an educated guess at that point as to the manufacturer,
check his data sheets
At a hamfest years ago I saw some UFO's on a table.
Me: What kind are they?
Vendor:I don't know, what's best?
Me: People seem to like type 43 for HF/VHF and 31 for MF/HF suppression.
Next time I walk by the table, all of the UFOs were miraculously
identified and labelled. Why, he even had
There are parts of the third world where ham homebrewing is based around three
standard toroids: the one from a TV 75/300 balun, the yellow one from a PC
power supply, and the green one from a PC power supply.
And here we bm that we don't have u' and u'' curves.
Tim N3QE
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: Topband: UFOs
There are parts of the third world where ham homebrewing is based around
three standard toroids: the one from a TV 75/300 balun, the yellow one
from a PC power supply, and the green one from a PC power supply.
And here we bm that we don't have u' and u'' curves.
Tim N3QE
:-)
Tim N3QE
-Original Message-
From: ZR [mailto:z...@jeremy.mv.com]
Sent: Tuesday, July 03, 2012 4:35 PM
To: Shoppa, Tim; topband@contesting.com
Subject: Re: Topband: UFOs
What do you mean 3rd world? That describes the majority of the USA, present
company excepted, but here they throw
, 2012 4:49 PM
Subject: RE: Topband: UFOs
I think my point was, we haven't always been so sophisticated either. Wes
Hayward's article on toroids in Jan 1968 QST discusses the Indiana General
sales policy to hams, then says The remainder of this discussion will show
the experimenter how he can
Don't knock those deflection yoke cores! :-)
I've used a lot of those for RFI suppression over the years, especially the
last place I worked. They started calling me a wizard there after a
simple trifilar winding of #10 THHN around one of those ferrite cores
allowed their CNC machine tool
