NavList:

Guess I need my eyes checked -- what I see when I bring up the link you posted is a tabular listing of LA AM radio stations.   The tabulation contains the following:  Call letters, frequency, a column that indicates day/night/both, a couple of unlabeled single-character alphabetic columns, a column that says "LIC," city, state, country, a wide unlabled column filled with things like "BL---" (license number?), transmitter power, link to detailed records for station, and name of licensee.   That's it.   No lat/long...

glapook@pacbell.net wrote:

But the link I posted gives the location of all the antennas of AM
stations in Los Angeles on one page, look again.

gl

On Dec 6, 8:12 am, Lu Abel <lu...@abelhome.net> wrote:
  

Before I wrote my previous email I did get as far as finding a listing
such as this.   But this one merely gives a list of stations in a
particular area.   To get the lat/long of their antennas, one would have
to click on each entry (and then another click or two) to get the
lat/long for one particular station.   One would then have to manually
copy that information into a separate document to make a list of the
lat/longs of all stations in a particular area.

Perhaps I misunderstood, but I thought your earlier post claimed one
could get a lat/long /list /directly from the FCC site.

Lu

Gary LaPook wrote:
    

Here is an example, all the Los Angeles AM stations
      

http://www.fcc.gov/fcc-bin/amq?state=CA&call=&arn=&city=los+angeles&f...
      

gl
      

Lu Abel wrote:
      

Do you have a URL for this list of lat/long for US stations?   I've
searched the FCC site and the only thing I can find is something
where you have to identify each individual station and after a few
clicks you can get its antenna location.   And then it's in NAD27
coordinates!
        

Thanks
        

Apache Runner wrote:
        

Although this is a completely out-of-the-box idea, I've been working
on an AM radio receiver/direction finder for fun.    The FCC
publishes the lat/long for all stations in the US.  
          

I haven't seen a variable capacitor in ages, but managed to find
some beauties online, and am making my own antenna.    Right now, I
think I can get an accuracy of maybe 3 degrees, but that's just a
guess.  
          

I'll post something when I have it up and running.
          

On Sat, Dec 5, 2009 at 3:03 AM, glap...@pacbell.net
<mailto:glap...@pacbell.net> <glap...@pacbell.net
<mailto:glap...@pacbell.net>> wrote:
          

    I know we have some commercial air pilots on the list and was
    wondering if
    they thought an aircraft RDF unit could be easily mounted on a boat.
    The
    aircraft industry seems to be the only ones making small units these
    days.
    I might go ocean cruising with a friend who is presently re-fitting
    his
    boat, and I am a big fan of redundancy, and thought this might be a
    workable
    solution.
          

    ---------------------------------------------------------------------------
          

    An ADF will work on a boat but they aren't cheap, the readout is
    only
    marked every 5 degrees and the antenna has to be mounted
    somewhere. If
    you want RDF capability just by an inexpensive digitally tuned
    portable radio that covers the LF band such as the Grundig G5 which
    also covers HF and has SSB capability so you can get your time
    signals  too. These all have ferrite rod internal antennas which are
    highly directional. Get one and tune a distant station. Then orient
    the radio in different attitudes and rotate the radio until you
    get a
    null which will let you know the orientation of the ferrite rod.
    Then
    you can use the edge of the radio to indicate the direction to the
    station. Place it on top of a universal plotting sheet to use as a
    compass rose placed on a table or nav station desk and rotate the
    radio to get a null. You may want to make a calibration table
    for it.
    Don't worry about the lack of a sense antenna which are really only
    needed by an ADF since a human can easily determine which is the
    correct bearing, the 180 degree ambiguity, which is a big
    problem for
    an ADF, is not a problem for a human.
          

    gl
          

    On Dec 4, 11:48 am, Bruce Hamilton <brucerhamil...@gmail.com
    <mailto:brucerhamil...@gmail.com>> wrote:
    > If GPS goes dark, Jeremy will be in a great position to
    negotiate a salary
    > raise.
          

    >  I had great hope for e-loran as going to a single system with
    no redundancy
    > seems risky at best. Even when Loran C coverage was poor, even the
    > information from a single chain would give you something to
    work with. In
    > the middle of Lake Superior, coverage was always spotty, and
    on the East
    > Coast of Canada we would often be on a single chain only 50
    miles off the
    > coast.
          

    > Jeremy, do you still have a working RDF?  I used them on
    aircraft all the
    > time, but must admit the one on the first ship I was on was
    not often used
    > and this was pre-gps. I have a working portable (Ray
    Jefferson) RDF that I
    > am going to try in a friend's boat. It is a pity that the
    technology got
    > left behind in the GPS age as the modern RDF's are apparently
    very good and
    > very quick. The signal from the multiple antennas is instantly
    processed and
    > you get an bearing read out.  The Canadian Coast Guard use
    them to get
    > instant fixes from distress signals in pre-GMDSS days. They
    have remote
    > stations they use to get a cross bearings from. No GPS required.
          

    > I know we have some commercial air pilots on the list and was
    wondering if
    > they thought an aircraft RDF unit could be easily mounted on a
    boat. The
    > aircraft industry seems to be the only ones making small units
    these days.
    > I might go ocean cruising with a friend who is presently
    re-fitting his
    > boat, and I am a big fan of redundancy, and thought this might
    be a workable
    > solution.
          

    > A fine page of old RDF units
    <http://www.angelfire.com/space/proto57/rdf.html>
          

    > On Fri, Dec 4, 2009 at 8:09 AM, <Anabasi...@aol.com
    <mailto:Anabasi...@aol.com>> wrote:
    > >  I read the following on a maritime forum site.  Looks like
    LORAN-C
    > > systems run by the US will be shut down sooner than we thought.
    > > -----------------------------
    > > The US Coast Guard released an internal message advising of
    the imminent
    > > termination of the long range aid to navigation Loran-C.
    Current plans call
    > > for the termination process to commence on 4 January 2010.
    The process is
    > > expected to take several months. ALCOAST
    675/09<http://www.uscg.mil/announcements/alcoast/675-09_alcoast.txt>(11/25/09).
    > > *Note: This will mark the end of an era that started during
    World War II.
    > > The Loran system has improved greatly over the years and was
    on the edge of
    > > yet another advance: to enhanced Loran (eLoran). It is
    unclear how other
    > > nations, which operate their own independent Loran-C
    systems, will react to
    > > this development. *
    > > Courtesy: Bryant�s Maritime Blog � 1 December
    2009<http://bryantsmaritimeblog.blogspot.com/2009/12/bryants-maritime-blog...>
    > > ------------------------------
          

    > > Not that this will affect many large ships.  My ship hasn't
    had LORAN
    > > capabilities since the antenna broke 3 years ago and the
    captain was too
    > > afraid to order a new antenna.  Most merchant ships are
    utterly dependent on
    > > GPS at this point, and would have a tough time remembering
    how to use the
    > > sextant if it came down to that point.  It will only get
    worse when the
    > > younger generations take command, having never known a time
    without GPS.
          

    > > JCA
          

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