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Old February 8th 11, 10:49 PM posted to rec.radio.shortwave
bpnjensen bpnjensen is offline
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First recorded activity by RadioBanter: Jul 2006
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Default 60 Foot Random Wire Shortwave [SWL] Antenna ?

On Feb 8, 2:42*pm, "D. Peter Maus" wrote:
On 2/8/11 16:39 , bpnjensen wrote:





On Feb 8, 2:27 pm, D Peter *wrote:
On 2/8/11 16:03 , bpnjensen wrote:


On Feb 8, 12:22 pm, D Peter * *wrote:
On 2/8/11 11:06 , bpnjensen wrote:


On Feb 5, 3:35 pm, "D. Peter * * *wrote:


* * * You do have a quite a bit of antenna, there. Verify that you've not
got too much. Look for images, indicating overload. A pad may be required.


FWIW, I have found that this new antenna, even before the unun is
grounded, works *extremely* well on almost all bands for elimination
of electrical hash noise with my DX-Ultra and MFJ-1026. *I can lop off
4-8 S-Units of hash noise while scarcely touching the desired signal,
leaving otherwise obscured signals either in the clear or almost so..
It has brought otherwise undetectable signals to easy copy. *Right
now, I'm wishing I had room for two of them - I could silence 60 and
90 meters background with them.


Maybe I'll take down the DX-Ultra and put up another one of these.
I'd hate to lose the DX-U (it's great on everything 41 meters and up),
but two matched antennae on the MFJ-1026 would work wonders, I think.


Bruce


* * *Excellent. This is good to hear. Congratulations.- Hide quoted text -


- Show quoted text -


Without counting all my chickens before they hatch, I will say I am
very pleased - and grateful to you, Peter, and the other folks
including Roy, Dave, Kevin, MII and others who have chimed in with
their help and advice. *Thanks!


* * Always glad to help in what marginal way I may, Bruce.


* * If you've had THAT kind of noise reduction, you're going to enjoy a
whole new world of listening.


* * I know you've mentioned it before, but I've had lunch since
then...which receiver are you feeding with this?- Hide quoted text -


- Show quoted text -


LOL! *Three of them - Icom R75, Allied SX-190 and a DX-160.


* *Oh, that's right...you discussed that SX-190 at some length. Duh....

* *And I remember being envious because of it.

* *So, how does it handle now that you've got a reasonably quiet
antenna on the front end?

* *And how does it compare to R75?- Hide quoted text -

- Show quoted text -


The R75 is considerably more sensitive and/or with a better s/n ratio,
given the same antenna system. Things are fairly audible on the R75
that are in the hash on the SX-190. Still, the SX-190 is a bunch of
fun. For a bad hum, I need to get either a capacitor replacement on
the power supply, or figure out the wiring on the 12VDC plug (an oddly
configured 4-prong socket) and see if that does the trick. Also might
be some bad caps in the audio chain.