[1000mp] Audio - FT1OOOmp + rfi

Sat, 24 Aug 2002 11:15:34 -0500

You are right in IMHO all I ever read and seen about grounding any grounding should be tied to the AC ground from power company. I personally know this works from first hand experience and working with grounding in two way radio field. Thanks
Morris WA4MIT 
--

On Sat, 24 Aug 2002 10:39:27  
 John wrote:
>Hi Hans,
>
>A very clear picture of your grounding bulkhead - impressive!
>
>Two questions for you -
>
>Please explain what the term "double pulse" (ground) means.
>
>If the antenna/shack ground system is separated from the houses electrical
>ground, won't a lightning hit to your antenna result in a very large voltage
>difference between the equipment ground and the AC input?  (start a fire?)
>In the U.S., when the antenna and AC grounds are tied together well, the AC
>line voltage rises with the ground voltage rise due to the center tap of the
>AC transformer being tied to the ground.  This reduces the amount of arcing
>that would occur.  Perhaps lightning is not a big problem there as it is
>here, sometimes even in the Winter.  (Or maybe I'm am not understanding
>something!)
>
>Thanks,
>
>John  W0DC
>
>
>----- Original Message -----
>From: <[email protected]>
>To: <[email protected]>
>Sent: Friday, August 23, 2002 6:14 AM
>Subject: Re: [1000mp] Audio - FT1OOOmp + rfi
>
>
>> I use ladder line too. In fact two antennas with each their own ladder
>line.
>> I don't have any RF problems with my rigs (e.g. FT-1000MP Mark V). But I
>use
>> a good groundsystem for my equipment. My opinion is that a good earth
>system
>> is very important and may solve a lot of problems, e.g. RFI.
>>
>> Today I made a photograph of the groundsystem in my shack. I put it on my
>> site and will let you know the URL tomorrow.
>>
>> 73,
>> Hans.
>>
>> Ham Radio:
>> PA1HR
>>
>> Sites:
>> www.remeeus.nl
>> www.qsl.net/pa1hr
>>
>> e-mail:
>> [email protected]
>>
>>
>> ----- Original Message -----
>> From: "Tom Homewood" <[email protected]>
>> To: <[email protected]>
>> Sent: Friday, August 23, 2002 2:15 PM
>> Subject: Re: [1000mp] Audio - FT1OOOmp + rfi
>>
>>
>> > When I had ladder line feeders coming into the shack I had rf problems
>on
>> 10
>> > meters.  The rig would do a master reset and end up on 40 meters.
>> >
>> > So I think the FT-1000MP is more susceptible than other rigs to rf.
>> >
>> > The ladder line is out of the shack now and all is well here.
>> >
>> > 73, Tom, W1TO
>> >
>> > ----- Original Message -----
>> > From: "on4vp" <[email protected]>
>> > To: <[email protected]>
>> > Sent: Thursday, August 22, 2002 5:42 PM
>> > Subject: [1000mp] Audio - FT1OOOmp + rfi
>> >
>> >
>> > > Does other people can confirm the yaesu been sensitive to picking up
>RFI
>> ?
>> > >
>> > > 73, Philippe
>> > > ON4VP
>> > >  .... starting to understand all functionality ...
>> > >
>> >
>> > _______________________________________________
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>>
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