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Equipment / Re: Receiver Question
« on: September 09, 2013, 0854 UTC »The question here is what do you mean by 'noise'? If it was absorbed through the AC line, the fact that the Sony operated on batteries could be a clue as to why the difference there.
I think the R75 comes from the factory with a 2.1 khz SSB filter, whereas the R-1000 came supplied with a wider, 2.8 khz SSB filter. That might have made a difference in what you were hearing. I think the Sony 2010's narrowest filter is around 3 khz (from what I see on the 'net), so it would be even wider.
The narrower the filter, the less audio information you're going to have -- which is fine for just voice or CW, but not so great if it's music.
Just a guess, anyway.
Thanks BoomBox. The noise being hiss and atmospheric static. The fridge was the only thing on and it was on a different breaker. I wondered about AC line noise as well. However it sounded similar on all units. I guess I would have to say the Sony seemed to have better ability to pull in the station at that time under the conditions.
In an attempt to limit "noise" this weekend I pounded in two 4' copper ground rods 20 feet apart and daisy chained 3-20 foot sections of wire to both rods and then to a ground terminal on the cabin near the breaker box. I hooked an MFJ 949E Versa Tuner to the Kenwood 1000 and ran the first 20' section of ground wire from the Versa Tuner to the first rod. I'm not sure if it made any difference or not but was picking up Red Mercury Labs and XFM really great using the 71' random wire. Didn't take the Icom this week and the signal from Red Mer especially was so good I didn't even mess with the Sony. Should probably post some new questions on the MFJ tuner and another on grounding. The more I research and play around the more freakin questions I have.....
Thanks for the research on the filters on those units! Taking the Icom next weekend. I have a Par Electronics EF-SWL should be here this week. Will make for some great testing I'm hopin'.