[ARC5] FCC General exam
D C _Mac_ Macdonald
k2gkk at hotmail.com
Tue Nov 26 18:31:39 EST 2013
The beast used a monter "coax" line that was copper "pipe" about 6' I.D.
The pictures showed a man walking INSIDE the coax before the center conductor of copper piping about 1 foot O.D. was installed using four insulated standoffs at each point at intervals along the feedline.
The transmitter fed one of two identical antennas that had a huge ground counterpoise "screen" leading into the ocean.
If one antenna iced up they fed raw AC (I guess) to the other antenna to de-ice it and then switched antennas.
If I recall, the signal transmitted was ICW at about 5 wpm. Any higher speed would cause the bandwidth of the signal to exceed the bandwidth of the antenna system!
* * * * * * * * * * *
* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret (61-81) *
* * * * * * * * * * *
> Date: Tue, 26 Nov 2013 23:07:11 +0000
> From: mstangelo at comcast.net
> To: k2gkk at hotmail.com
> CC: arc5 at mailman.qth.net
> Subject: Re: [ARC5] FCC General exam
>
> It is 1 MW. I fould this list of VLF stations:
>
> <http://www.smeter.net/stations/vlf-stations.php>
>
> Mike N2MS
>
> ----- Original Message -----
> From: D C _Mac_ Macdonald <k2gkk at hotmail.com>
> To: wa5jci at flash.net, mstangelo at comcast.net
> Cc: ARC-5 Mail List <arc5 at mailman.qth.net>
> Sent: Tue, 26 Nov 2013 22:39:18 -0000 (UTC)
> Subject: RE: [ARC5] FCC General exam
>
> What was the power output at that Cutler, ME LF station? 100 KW? 1 MW? I don't remember. I saw a presentation of the building of that station at a Dallas, TX hamfest around 63 or 64.
>
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * * * * * * * * * * *
>
>
> > Date: Tue, 26 Nov 2013 15:28:25 -0600
> > To: mstangelo at comcast.net; k2gkk at hotmail.com
> > From: wa5jci at flash.net
> > CC: arc5 at mailman.qth.net
> > Subject: Re: [ARC5] FCC General exam
> >
> > Then there was the Omega system used mainly for civilian aircraft and
> > ship navigation. We also used it for tracking our high altitude
> > research balloons.
> >
> > de Pete WA5JCI
> >
> >
> >
> > >The Navy still uses VLF transmitters to communicate with submarines.
> > >Using a loop antenna to eliminate local QRN I can pick up the
> > >Laulualei Hawaii station on 21.4 khz or the Jim Creek, Washington
> > >station on 24.8khz day or night.
> > >
> > >The Cutler, Maine station at 24khz is easy to pick up since it is
> > >close to my QTH in New Jersey.
> > >
> > >Mike N2MS
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