[Top] [All Lists]

[RFI] RE: Concerning BPL video

To: <rfi@contesting.com>
Subject: [RFI] RE: Concerning BPL video
From: wa4tukhr at comcast.net (Patrick A. Thompson Sr.)
Date: Sat Aug 9 13:57:47 2003
Its pretty obvious, using your words, why there are no complaints filed from
US hams regarding BPL. This particular form of BPL has yet to be deployed
except in small test areas.

You are at least correct in pointing to dimmers, etc.

It appears that you have not studied the results from foreign sites. You
should also take another listen to the video. If the first three locations
don't speak to you then the fourth location using a different modulation
method will.

I suspect you have another agenda besides the good of amateur radio.

And for the rest of you reading this, please forgive me for responding to a


> -----Original Message-----
> From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com]On
> Behalf Of Mike @ RFI Services
> Sent: Saturday, August 09, 2003 12:20 PM
> To: rfi@contesting.com
> Subject: [RFI] RE: Concerning BPL video
> Well, it's obvious from the BPL video that BPL is indeed needed. I say
> this because of the bandwidth that is used up by all the unjustified
> negative publicity concerning BPL. After listening to the audio several
> times, I hear nothing that sounds like BPL. I'm a little confused. Maybe
> I down loaded the results of and interference complaint caused by a
> combination of power line sparking and several narrow band inside noise
> sources. I'll listen again.
> Question:
> Has anyone ever heard of a complaint filed by a ham that is experiencing
> RI from BPL? I have. The source was a touch control lamp 2 blocks away.
> With an active BPL system in the QTH.
> I'm in the business of locating the sources of RFI, regardless of the
> cause(s). So if BPL were a problem, it could be seen as another source
> of job security for me. However, to this date I haven't heard of another
> complaint made by a ham claiming to have problems from BPL. Why?
> Has anyone else seen a complaint that the cause was found to be BPL?
> Of all the concerns we read about on reflectors, why are they all
> responses to the concerns and never about a known problem? Surely
> someone would have had one by now. These test systems are in areas that
> know one even knows about. Still no complaints. After everyone is
> notified that the system is under test and it is offered, still no
> complaints. Why?
> When I'm testing for BPL emissions, I can hear it while my antenna is 20
> feet from the source. However, when I drive away the signal is gone.
> Why don't we put this much energy into stricter enforcement concerning
> Dimmers, touch control lamps, doorbell transformers, aquarium heaters,
> power supplies, TV sets and telephones. This would be a real challenge.
> I investigate over 500 RFI complaints per year and over 60% of them are
> the sources listed above. Their are more but they are the most frequent.
> Power line carrier systems have been in houses and on power lines for
> the entire 25 years I've been involved in RFI. I can count the
> complaints concerning them on one hand. Those systems didn't bypass the
> ham bands as do the new systems.
> The questions I'm asking above are not because I'm looking for answers.
> They are questions you should ask yourself.
> I think I already know the answers.
> Very sincerely Best wishes,
> Mike Martin
> RFI Services
> 6469 Old Solomons Island Rd
> Tracy's Landing MD 20779
> 301-855-5961 Tel (E.S.T.)
> 410-741-5153 Fax
> 164*21*29180 Nextel
> mike@rfiservices.com
> www.rfiservices.com
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi

<Prev in Thread] Current Thread [Next in Thread>