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#1
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Question: good pulse noise blanker?
Howdy,
I have a pulsing noise (about 1 pule a second) that I would like to eliminate / attenuate. Any suggestions? Any comments on MFJ DSP filter, or Timewave 59+? Thanks, Jeff |
#2
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Where is your station: in a car, at home, on the boat....?
"Jeff L" wrote in message ... Howdy, I have a pulsing noise (about 1 pule a second) that I would like to eliminate / attenuate. Any suggestions? Any comments on MFJ DSP filter, or Timewave 59+? Thanks, Jeff |
#3
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Where is your station: in a car, at home, on the boat....?
"Jeff L" wrote in message ... Howdy, I have a pulsing noise (about 1 pule a second) that I would like to eliminate / attenuate. Any suggestions? Any comments on MFJ DSP filter, or Timewave 59+? Thanks, Jeff |
#4
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It's my home setup. I have an Icom 706 and the DSP and blanker helps
but the pulse noise (maybe s3) is annoying. It appears to be coming from a neighbor's house. On Tue, 28 Dec 2004 16:44:02 -0700, "Bob M." wrote: Where is your station: in a car, at home, on the boat....? "Jeff L" wrote in message .. . Howdy, I have a pulsing noise (about 1 pule a second) that I would like to eliminate / attenuate. Any suggestions? Any comments on MFJ DSP filter, or Timewave 59+? Thanks, Jeff |
#5
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It's my home setup. I have an Icom 706 and the DSP and blanker helps
but the pulse noise (maybe s3) is annoying. It appears to be coming from a neighbor's house. On Tue, 28 Dec 2004 16:44:02 -0700, "Bob M." wrote: Where is your station: in a car, at home, on the boat....? "Jeff L" wrote in message .. . Howdy, I have a pulsing noise (about 1 pule a second) that I would like to eliminate / attenuate. Any suggestions? Any comments on MFJ DSP filter, or Timewave 59+? Thanks, Jeff |
#6
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It's my home setup. I have an Icom 706 and the DSP and blanker helps
but the pulse noise (maybe s3) is annoying. It appears to be coming from a neighbor's house. The most effective solution would probably be to enlist your neighbor's assistance, find the offending device, and figure out some sort of a noise suppression which could be done at the source. Fairly common culprits for this sort of periodic impulse noise are fish-tank heaters (noise occurs when the thermostat turns the heater on or off), pulse-type electric-fence energizers (partial short circuits of the "hot" fence wire to ground can cause such noise), and certain types of battery-charger. A noise filter which plugs in between the offending device, and the AC wall socket, may be the least expensive and most effective solution. If you're on tolerably good terms with your neighbor, and are willing to pay for the filter (even though dealing with the noise is technically the neighbor's responsibility), this is the approach I'd recommend. [I wouldn't recommend actually making any modifications to the neighbor's equipment yourself, for liability reasons... just supply a filter and let the neighbor plug it in.] You could try dealing with the noise at the audio-output level using a ClearSpeech or similar DSP-equipped speaker system, but my impression is that these are fundamentally less effective than an IF-based blanker (which your rig already has). -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#7
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It's my home setup. I have an Icom 706 and the DSP and blanker helps
but the pulse noise (maybe s3) is annoying. It appears to be coming from a neighbor's house. The most effective solution would probably be to enlist your neighbor's assistance, find the offending device, and figure out some sort of a noise suppression which could be done at the source. Fairly common culprits for this sort of periodic impulse noise are fish-tank heaters (noise occurs when the thermostat turns the heater on or off), pulse-type electric-fence energizers (partial short circuits of the "hot" fence wire to ground can cause such noise), and certain types of battery-charger. A noise filter which plugs in between the offending device, and the AC wall socket, may be the least expensive and most effective solution. If you're on tolerably good terms with your neighbor, and are willing to pay for the filter (even though dealing with the noise is technically the neighbor's responsibility), this is the approach I'd recommend. [I wouldn't recommend actually making any modifications to the neighbor's equipment yourself, for liability reasons... just supply a filter and let the neighbor plug it in.] You could try dealing with the noise at the audio-output level using a ClearSpeech or similar DSP-equipped speaker system, but my impression is that these are fundamentally less effective than an IF-based blanker (which your rig already has). -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#9
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Thanks for the suggestions Dave. I've never met this neighbor yet, but
I do plan to. Kind of a bummer it has to be over a problem! Your electric fence comments are interesting. It's a very regular, rhythmic pulse every second or so. Jeff On Wed, 29 Dec 2004 00:35:46 -0000, (Dave Platt) wrote: It's my home setup. I have an Icom 706 and the DSP and blanker helps but the pulse noise (maybe s3) is annoying. It appears to be coming from a neighbor's house. The most effective solution would probably be to enlist your neighbor's assistance, find the offending device, and figure out some sort of a noise suppression which could be done at the source. Fairly common culprits for this sort of periodic impulse noise are fish-tank heaters (noise occurs when the thermostat turns the heater on or off), pulse-type electric-fence energizers (partial short circuits of the "hot" fence wire to ground can cause such noise), and certain types of battery-charger. A noise filter which plugs in between the offending device, and the AC wall socket, may be the least expensive and most effective solution. If you're on tolerably good terms with your neighbor, and are willing to pay for the filter (even though dealing with the noise is technically the neighbor's responsibility), this is the approach I'd recommend. [I wouldn't recommend actually making any modifications to the neighbor's equipment yourself, for liability reasons... just supply a filter and let the neighbor plug it in.] You could try dealing with the noise at the audio-output level using a ClearSpeech or similar DSP-equipped speaker system, but my impression is that these are fundamentally less effective than an IF-based blanker (which your rig already has). |
#10
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ClearSpeech speakers probably won't work on this kind of noise. They need
consistent noise to be most effective, not on-off-on-off noise. I would also check stuff in your house first before going to the neighbor. "Dave Platt" wrote in message ... It's my home setup. I have an Icom 706 and the DSP and blanker helps but the pulse noise (maybe s3) is annoying. It appears to be coming from a neighbor's house. The most effective solution would probably be to enlist your neighbor's assistance, find the offending device, and figure out some sort of a noise suppression which could be done at the source. Fairly common culprits for this sort of periodic impulse noise are fish-tank heaters (noise occurs when the thermostat turns the heater on or off), pulse-type electric-fence energizers (partial short circuits of the "hot" fence wire to ground can cause such noise), and certain types of battery-charger. A noise filter which plugs in between the offending device, and the AC wall socket, may be the least expensive and most effective solution. If you're on tolerably good terms with your neighbor, and are willing to pay for the filter (even though dealing with the noise is technically the neighbor's responsibility), this is the approach I'd recommend. [I wouldn't recommend actually making any modifications to the neighbor's equipment yourself, for liability reasons... just supply a filter and let the neighbor plug it in.] You could try dealing with the noise at the audio-output level using a ClearSpeech or similar DSP-equipped speaker system, but my impression is that these are fundamentally less effective than an IF-based blanker (which your rig already has). -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
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