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#22
posted to rec.boats.electronics
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TV antenna
In article , (GregS) wrote:
In article , (GregS) wrote: In article , (GregS) wrote: In article , Larryr wrote: Hi, A year ago, I bought a LCD TV which tunes analog and digital channels. I first tried to use the VHF masthead whip as an antenna with poor results, same with rabbit ears. I made a horizontal wire loop out of a bucket lid and a twin lead to coax transformer to hang in the rig. I noticed that when swinging at anchor, the motion of the boat caused the digital channels to freeze or glitch with pixelation and audio squawks. I would then switch to the analog channel and put up with the inferior quality. Realizing that the time was rapidly approaching when I would not be able to continue viewing by going analog, I decided to buy an amplified antenna to hang in the rig. I chose a winegard ms2000 omni which has a fairly large 21 inch saucer, a 3 watt power injector, was supposed to come with 50' of RG 6. It arrived and I installed it. It came with RG 59 and cheap F connectors, so I didn't use that. I flew it and the reception was not quite as good as my home made passive loop. I changed out coax, unplugged the power injector, and determined that the cable was good and the amp was functioning. So, I am very dissatisfied with this unit's performance. I am looking for suggestions as to how to improve my drop out situation while swinging on the hook. It should be omni directional, i think. I understand that digital's phase sensitivity to movement is much greater than analog. Any Ideas? Not interested in servo gyro type stuff. I never tried swinging an antenna ! I bought a RCA omni some time ago and it has a amplifier, but the selection switch on the control makes no difference in high/low band reception. I suspect something faulty. Well Tandy used to sell the best little antenna that had a motorized dipole type system inside a thin round case. That was NOT sold at Radio Shack that I know of. JC Whitney had them, but its long gone. The best system would be a home made one with amplification and directionality of some sort, either phasing or motorization. greg I guess you could also rotate one of those sticks with a rotator. greg Check this out.. http://www.sat-sales.com/proddetail....enna_WA_260 8 I see an updated round rotated device I was describing. http://www.solidsignal.com/prod_disp...?prod=HDMS9100 |
#23
posted to rec.boats.electronics
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TV antenna
In article , (GregS) wrote:
In article , (GregS) wrote: In article , (GregS) wrote: In article , (GregS) wrote: In article , Larryr wrote: Hi, A year ago, I bought a LCD TV which tunes analog and digital channels. I first tried to use the VHF masthead whip as an antenna with poor results, same with rabbit ears. I made a horizontal wire loop out of a bucket lid and a twin lead to coax transformer to hang in the rig. I noticed that when swinging at anchor, the motion of the boat caused the digital channels to freeze or glitch with pixelation and audio squawks. I would then switch to the analog channel and put up with the inferior quality. Realizing that the time was rapidly approaching when I would not be able to continue viewing by going analog, I decided to buy an amplified antenna to hang in the rig. I chose a winegard ms2000 omni which has a fairly large 21 inch saucer, a 3 watt power injector, was supposed to come with 50' of RG 6. It arrived and I installed it. It came with RG 59 and cheap F connectors, so I didn't use that. I flew it and the reception was not quite as good as my home made passive loop. I changed out coax, unplugged the power injector, and determined that the cable was good and the amp was functioning. So, I am very dissatisfied with this unit's performance. I am looking for suggestions as to how to improve my drop out situation while swinging on the hook. It should be omni directional, i think. I understand that digital's phase sensitivity to movement is much greater than analog. Any Ideas? Not interested in servo gyro type stuff. I never tried swinging an antenna ! I bought a RCA omni some time ago and it has a amplifier, but the selection switch on the control makes no difference in high/low band reception. I suspect something faulty. Well Tandy used to sell the best little antenna that had a motorized dipole type system inside a thin round case. That was NOT sold at Radio Shack that I know of. JC Whitney had them, but its long gone. The best system would be a home made one with amplification and directionality of some sort, either phasing or motorization. greg I guess you could also rotate one of those sticks with a rotator. greg Check this out.. http://www.sat-sales.com/proddetail....enna_WA_260 8 I see an updated round rotated device I was describing. http://www.solidsignal.com/prod_disp...?prod=HDMS9100 and the orginal discontinued one http://www.solidsignal.com/prod_disp...p?PROD=5MS9000 |
#24
posted to rec.boats.electronics
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TV antenna
In article , (GregS) wrote:
In article , (GregS) wrote: In article , (GregS) wrote: In article , (GregS) wrote: In article , (GregS) wrote: In article Check this out.. http://www.sat-sales.com/proddetail....enna_WA_260 8 I see an updated round rotated device I was describing. http://www.solidsignal.com/prod_disp...?prod=HDMS9100 and the orginal discontinued one http://www.solidsignal.com/prod_disp...p?PROD=5MS9000 I'm getting a headache fishing through owners. Somehow Antennacraft, Tandy, and Circuit City, and Woolworths are all the same. A name is nothing to be proud of anymore. greg |
#25
posted to rec.boats.electronics
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TV antenna
Hi Greg, thanks for the link, but swinging at anchor, I do not want a
directional antenna if I can avoid it. That is why I chose an omni - though it is not an improvement over the passive homemade omni that I had been using. |
#26
posted to rec.boats.electronics
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TV antenna
In article , Larryr wrote:
Hi Greg, thanks for the link, but swinging at anchor, I do not want a directional antenna if I can avoid it. That is why I chose an omni - though it is not an improvement over the passive homemade omni that I had been using. I would think a dipole poiting at the station would provide the best swing range. I don't know the directional characteristics of a yagi or other types. I guess the data is available. With that motorized unit, it is basically a dipole as far as I know, but I also can't say for sure. Rotating a stick antenna is obviously going to be like a dipole. greg |
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