Message-ID: <001701bf80b6$2cbf4900$579701d5@default>
From: "Alan Melia" <Alan.Melia@btinternet.com>
To: "rsgb_lf_group" <rsgb_lf_group@blacksheep.org>
Subject: LF: Low loss inductors ... tnx
Date: Sun, 27 Feb 2000 00:04:10 -0000
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Hi thanks Andy and Dick. I couldn't believe that coax would be a dummy load
at 136k either but although there is a formula for the Q of the 'inductance'
formed by the shorted line I could not think of a way of deriving one of the
terms....actually what current IS flowing in the conductors. Andy's figures
make a lot of sense and it just goes to confirm the old adage " you don't
get owt fer nowt". OK I must plead stubby geriatric fingers for the extra
order, I was probably mentally slowing light down to my speed! Certainly the
reactance changes very rapidly with frequency, and I suspect this was why
only a part of the loading uses the shorted stub in the Wireless World
article ( there being lumped inductors shown as well).

 Ah well I can put my old UR67 to better uses and the neighbours can sleep
peacefully as I don't need install an old 'grid' pylon to support the
loading inductor.

Some idiot has got to keep asking the silly questions!!

73 de Alan G3NYK