[GreenKeys] Re: Dovetron

Sat, 1 Mar 2003 12:38:02 -0500

Miami was WBR70.  Run by FAA.  I used to be there, but not associated with
the transmitter site.  They used TMC and later swapped to Racal Milgo
transmitters before they went off the air.  I don't remember the freqs.
WBR70 was also the HF licensee for the Miami IFSS where I worked.  We used
6568 both AM and USB for air/ground.  That shut down in 1975 I believe.

WBR70 received South and Central American wx from Tegucigalpa and Swan
Island and relayed it via LL to the resto of the world.  We had two huge log
periodics located right on Tamiami airport for that purpose.  The
Transmitter site used rhombics and curtain antennas for transmission of wx
products.

Times do change, and HF transmission via RTTY of wx is almost gone.
Likewise press.

Gil, W1RG
----- Original Message -----
From: "Jack" <[email protected]>
To: <[email protected]>; <[email protected]>;
<[email protected]>
Sent: Saturday, March 01, 2003 11:48 AM
Subject: Re: [GreenKeys] Re: Dovetron

> The Canadian Station, CFH, runs at 100 wpm, 74.2 baud,
> 850 HZ shift.
>
> "CANADIAN FORCES METOC CENTER, HALIFAX, NOVA SCOTIA, CANADA"
>
> The frequencies are:
>
> 4271, 6496, 10536 and 13510 KHZ.
> They are also on 122.5 KHZ, but I've never been able to hear them
> there.
> The 10536 channel is active 24 hours a day. The others are
> more sporadic. I have copied this station from both sides
> of the country.
>
> CFH sends the weather reports for most of the larger airports
> on the Eastern Seaboard. While the reports are coded, the coding
> "key" can be found on the NOAA website, with some poking
> around. The code is called "METAR". With a little practice you
> can "read" the reports. Anyone who is an aircraft pilot would
> immediately recognize the reports. CFH also sends plain text forecasts
> for the Nova Scotia area. At times, they send the iceberg
> reports (interesting to read). The FAX transmission are comprised
> of weather maps for the North Atlantic area. I copy them using
> a little AEA FAX gadget that plugs into the COM port and
> uses simple software. It's got to be more than 10 years old now.
>
> I have always been curious as to who CFH sends the weather to. I
> have assumed it was ships at sea.
>
> Most other RTTY stations that I have found send very little information;
> most
> of their transmissions are just identifiers.
>
> Don't forget the ARRL bulletins. They're sent every weeknight around
> 6 or 7 PM (depending on whether or not it's daylight savings time).
> They send at 60 wpm, 170 HZ shift and also sometimes on ASCII.
>
> Jack WA2HWJ
>
> NNNN
>
>
>
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