My Dad, 2NJ, is in the 1916 book - which I have a prized copy of.
If anyone has books or supplements earlier - I'm collecting
73,
Hal
N4GG
(Harold Kennedy Jr., Harold Kennedy Sr. was 2NJ)
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UR RST IS ... ... ..9 QSB QSB - hw? BK
I have matched quite a few Tee top verticals - and do it as follows...
Put an antenna analyzer at the feedpoint and measure what you have at the
QRG you want - probably 1.830?
Put the numbers into the TLW program and let it design an L network for you.
Wind the L and use transmit quality
Common mode chokes DO NOT belong between boxes on your desk. As Tom and
others have said. The objective is to get them all at the same RF
potential, not isolate them from one another so they can seek their own
independent RF potential.
73
Hal N4GG
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
A common quip running around the system engineering department I ran for
years:
Sure it works in practice...but what about in theory?
Happy Thanksgiving everyone...
N4GG
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UR RST IS ... ... ..9 QSB QSB - hw? BK
I have had two instances over the past few years of similar noise Mike.
Both cases turned out to be small switching power supplies...one for a
Dell laptop, the other for an LCD monitor. Both supplies were very
quiet under normal circumstances, but were laying on the floor along
with lots of coax
