TopBand: Comment on slinky on 40 meters
km1h @ juno.com
Mon, 01 Dec 1997 14:29:09 EST
Tnx for the comments Mel.
I use mine regularly on 40 and 30M but sometimes a preamp helps on 30. On
40M they are used when rain/snow static wipes out the yagi.
On Saturday I put up a new 5 Slinky Beverage on AF to replace a 7 yr old
rusty one. This time I terminated in 1200 Ohms but still used the 9:1
matching xfmr....had a few spares all built.
I noticed exceptional F/R; over 30dB but it may just have been condx. It
will take several weeks to be certain but I'm already thinking about
wiring a 2:1 xfmr to run off the 9:1; that should be close enough to what
I need for a 75 Ohm feedline.
One other thing surfaced in the memory here. Many months ago someone
mentioned that a regular Beverage made from galvanized fence wire was
also very quiet and appeared to offer significant SNR improvement over
copper wire. Since the Slinky is cadmium plated steel I wonder if there
may be some correlation.
I spent considerable time listening on 80 and 160 during CQWW and noticed
that I was hearing many, many calls Q5 wheras other US stations...mainly
multis, were not replying at all or lots of QRZ? The exception was K1KI
who was hearing very well indeed.
I now have 4 conventional Beverages of 500-900' lengths and 4 Slinkys of
175'. I intend to do a lot of listening and A:B switching and get a
better feel for things.
73 Carl KM1H
On Mon, 01 Dec 1997 08:31:06 -0500 Melvin J Crichton
>I used the new Europe slinky as receive antenna in the CQWW on 160,
>80, and 40
>It was somewhat noisy on 160, less noisy on 80, and DEAD QUIET on
>could find a signal down in the mud on the 40 vertical or dipole, then
>slinky and the noise level disappeared completely with little loss in
>(maybe 2-3 S units). But with no background noise to deal with I could
>the TS940's VBT to nil and still pull signals out. Almost NO QRM to
>with!! Needless to say, when the band got crowded I used it all the
>it seemed to hear the Caribbean and Central American stations OK
>signal strength, so a signal off the side or from behind was still
>Has anybody else noticed the slinky's performance on 40 meters? Not
>noticed when I tried it on 20 (no beam here, so I try EVERY antenna I
>BTW... the SWR problem I noticed earlier was poor coax... replaced it
>before the test and all OK now.
>I even hustled a 30 foot tall inverted L into place Friday using the
>radials on my 80 meter vertical and a 125 foot couterpoise radial...
>perform slightly better than the 45 foot high dipole, but we'll give
>it a good
>test this weekend.
>Carl..... Thanks again for the slinky... it's great!!!
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