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#18
April 8th 06, 01:22 PM
posted to rec.radio.shortwave
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Antenna Tuner
On Fri, 07 Apr 2006 23:34:37 -0400, blitz @. wrote:
HFguy writes... blitz wrote: I've got two hi-fi tuners that overload on the outdoor long-wire (on AM, of course). Is there a way to tune, preselect, detune, balun, resist, or whatever the antenna so I can use it? It depends on what's overloading the receiver. Are you located close to a strong AM station? In general, a passive pre-selector should help but you might need just a frequency 'trap' to reduce the strength of the offending station. Are you using coax for the antenna lead-in or just a single wire? Yeah, I'm close to some 'strong' AM stations. Strong in signal strength, at least. The worst only runs ~350 watts at night, but there are several that intrude at points on the dial, w/the outside antenna. I'm using coax from the tuners, about a hundred feet out to the antenna, grounded at the house and the outside connection point with buried 8' copper rods. The grounding kills most of the noise- it's very quiet on the Yamaha T-1 (could stand a little more signal, actually). But the Yamaha TX-950 and the Onkyo T-4711 get station harmonics like crazy. HiFi AM tuners suck. |
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