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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. |
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