I made a ferrite antenna using several rods to make something an inch
in Dia and perhaps 8 inches long
was able to get it to tune to 100 K or so with a large var cap and
switching in fixed cap
using a LW radio it works well and does a good job at 500 Khz
managed to get 10, 6 Inch ferrites at a hamfest fer a buck a peace,, still
kick M self for not buying all he had
never did a DX spot with it but it works well
Bob K3DJC
On Sun, 14 Aug 2011 23:09:30 +0200 =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= <
[email protected]>
writes:
Hm yes, maybe. But if you are outside in the nature (thinking about a
total /p station consisting out of that antenna and a sensitive RX, a netbook
running SL and a 70cm handheld TRX, and sitting on a bank watching the sky!)
where no man made QRM is and point the antenna to the wanted signal... The
DCF77 clock antennas at home are probably often pointing somewhere, rather to
the neighbours PC instead to Mainflingen.
And it must be a large rod or
probably many of them in parallel and seriell using a LNA as well. Must be
separated from the SL running PC.
I assume many have tried this before,
most probably some of the reflector members too.
Further
comments?
73, Stefan/DK7FC
Am 14.08.2011 21:43, schrieb Minto
Witteveen:
I haven’t thought about ferrite RX antenna for LF….My guess is
that it is not going to work – not without an external antenna coupled to
the ferrite, and then what’s the point?
DCF77 clocks often have trouble
locking indoors or in the neighborhood of ‘QRM’ generators like PC’s, and
look what power DCF77 is using…
I could be entirely wrong of
course…
73’ Minto pa3bca
Sent: Sunday, August 14, 2011 20:03
Subject: Re: LF: Re: 137 grabbers
<snip>
BTW what do you think about a ferrite RX
antenna for LF? Now i'm opening an older discussion i expect ;-)
73,
Stefan/DK7FC
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