SeaTTY 1.80 beta is published - with GMDSS DSC decoder now

[Sergei Podstrigailo]

Hello All,

I just have uploaded SeaTTY 1.80 beta to the main site and error:

http://www.dxsoft.com/seattyb.zip
http://www.hamport.com/seattyb.zip


--
Best regards,
Sergei


============================================================================
========
SeaTTY versions history

V1.80
GMDSS DSC (HF and VHF) messages decoding was made.
V1.76
Station ID's of RTTY and NAVTEX messages are included in message filenames
and are shown in the message tree now.
V1.75
The "Setup" menu was rewritten.
Station ID filter was made. This filter allow to select messages which
should be automatically saved in NAVTEX and RTTY modes. Station ID is
four letters after "ZCZC " sequence.
V1.74
The "Shift" menu can be used to select normal deviation (800 Hz)
or narrow deviation (300 Hz) in HF-FAX mode now. Narrow
deviation is used at Long wave band.
Some minor bugs were fixed.
V1.73
The "Setup->Clear Rx Window Once a Day" option was made.
V1.72
Invisible buffer is not used now. Receiving window contains
all received symbols until it is manually cleared.
Some internal changes were made.
V1.71
Minor bugs in text displaying were fixed.
V1.70
Minor improvements of raw log files handling were made.
V1.65
NOAA Weather Radio SAME messages decoding was made.
Voice message is automatically saved to a wave-file (5 min maximum),
SAME header of a message - to a text file.
[...]

 

[Marc Heusser]

I just have uploaded SeaTTY 1.80 beta to the main site and error:

http://www.dxsoft.com/seattyb.zip
http://www.hamport.com/seattyb.zip

============================================================================
========
SeaTTY versions history

V1.80
GMDSS DSC (HF and VHF) messages decoding was made.

Great - too bad it does not run under Mac OS X.

Marc

 

[Larry]

Great - too bad it does not run under Mac OS X.

Whoa! Waitaminit! The Apple salesman at our local Best Buy said Mac OSX
would run all the Windoze software. What happened??

Larry

 

[Marc Heusser]

Whoa! Waitaminit! The Apple salesman at our local Best Buy said Mac OSX
would run all the Windoze software. What happened??

Nothing - any Intel Mac will run Windows XP or Vista natively (the
MacBook Pro is the fastest Windows Vista notebook).
And most likely I can run the programme in Windows under Parallels (ie
as a task in Mac OS X).
I do however prefer native Mac OS X software for the user interface. And
the reliabilty. (I just spent a few days on board of the firefighting
boat in Basle, Switzerland, and they ran an ECDIS map - digitized map of
the river Rhine connected to the GPS, and it would crash every now and
then, in the end it would not work anymore.)

Marc

 

[Steve Lusardi]

Larry,
Your email server is complaining that it cannot deliver email to you. Am I
using your correct address?
Steve

 

[Larry]

Larry,
Your email server is complaining that it cannot deliver email to you.
Am I using your correct address?
Steve

You must be kidding. Never post email addy on usenet.


Larry
--
QUOTE OF THE MONTH:
"I have been to several major Chinese cities and have seen first hand
shops crammed with obviously fake American products." - Jon Dudas,
Undersecretary of Commerce for Intellectual Property Rights.

How can they be fake? The Chinese make all "American Products" I
use!

 

[Steve Lusardi]

Larry,
The 23' whip sounds like an elegant solution to my problem. I have a steel
60' sloop that I built myself. On this I have an ICOM 700 with the AT130 and
a SEA 330 with the 1630 coupler. What would you recommend for this
installation? There are twin 5/8 rod back stays and an 11' wide antenna
bridge behind the center cockpit. Lots of room in this area as well as a
solid continuous 1 1/4" stainless rail all around the boat at a height of
30" . Perhaps an antenna switch and a common antenna, as I will never use
more than one radio at a time.

Thanks in advance,
Steve

 

[Larry]

Perhaps an antenna switch and a common antenna, as I will never use
more than one radio at a time.

The only reason for two radios would be redundancy. If this is what
you are looking for, forget antenna switching as you are more likely
to lose the antenna than the radio. I'm for dumping one radio,
probably the Sea, but your choice as I don't know what their
individual conditions are.

Backstays are better antennas than whips because of their length.
Boaters on HF use the lower, shorter ranged frequencies, like 4, 6
and 8 Mhz. So, the longer the antenna, the better the radiation. On
the steel boat, I'm sure your backstay is grounded, unlike the
plastic boats, so we're going to need insulators top and bottom
wherever the backstay (or its jacks) meets the boat. Congratulations
on your most enviable ground, that steel hull. Plastic boaters will
all have lots less signal strength than you. Simply ground the
tuner's ground screw to the hull with a very short, straight heavy
wire. We have an HF ham station, WA4USN, aboard the WW2 aircraft
carrier, Yorktown (CV-10), a museum here. "World's Largest Ground
Plane" hooked to the Atlantic Ocean. Amazing signals worldwide.

If you decide to go with the whip, put the tuner as close to the base
of it as you can get. Make sure the whip ISN'T NEAR ANY METAL like
boom lifts, as much as practical. Any parallel rigging near it just
sucks the signal right off to ground, which does you no good.

Larry
--
QUOTE OF THE MONTH:
"I have been to several major Chinese cities and have seen first hand
shops crammed with obviously fake American products." - Jon Dudas,
Undersecretary of Commerce for Intellectual Property Rights.

How can they be fake? The Chinese make all "American Products" I
use!

 

[Larry]

Larry, home.com is a valid domain.

You should know better than to use it in your header.

@home used to be the Comcrap ISP. It's not any more.

Larry
--
QUOTE OF THE MONTH:
"I have been to several major Chinese cities and have seen first hand
shops crammed with obviously fake American products." - Jon Dudas,
Undersecretary of Commerce for Intellectual Property Rights.

How can they be fake? The Chinese make all "American Products" I
use!

 

[Bruce in Alaska]

Larry,
The 23' whip sounds like an elegant solution to my problem. I have a steel
60' sloop that I built myself. On this I have an ICOM 700 with the AT130 and
a SEA 330 with the 1630 coupler. What would you recommend for this
installation? There are twin 5/8 rod back stays and an 11' wide antenna
bridge behind the center cockpit. Lots of room in this area as well as a
solid continuous 1 1/4" stainless rail all around the boat at a height of
30" . Perhaps an antenna switch and a common antenna, as I will never use
more than one radio at a time.

Thanks in advance,
Steve

Steve, if you try and use the SEA330/SEA1630 with just 23 Ft of Antenna
you will be dissapointed with the result on any Frequency below 6 Mhz.
Look around your vessel for ANY way to put 35 Ft of wire under that 23'
Whip, and your experience will be considerable better. Sea330's are
a bit of a Power Hawg when operating at 300 Watts PEP Output, but they
sure to "Talk" well, when the bands are marginal, if the antenna is
reasonable.

Bruce in alaska who installed a bunch of SEA330's all over alaska...

 

[Steve Lusardi]

Bruce & Larry,
Ok the whip won't cut it. The back stays are 90'+ each. Do I use 1 inverted
V or do I use each back stay as antennae?
Steve

 

[Larry]

operating at 300 Watts PEP Output

300 watts?......Oh, wait, I forgot to turn on the linear....(c;

Larry

 

[Larry]

Bruce & Larry,
Ok the whip won't cut it. The back stays are 90'+ each. Do I use 1
inverted V or do I use each back stay as antennae?
Steve

Parallel them. Put an insulator about 3' from the upper end, not too
close to the metal up there, then an insulator on each of the bottom ends
right above the deck but not so the backstay touches bimini tops, etc.
That wonderful steel hull is the finest ground plane on the planet hooked
to that ocean like it is. No grounding blocks or other nonsense is
necessary. RF goes right through bottom paint on steel hulls.

Put the tuner in the middle of them at the bottom and be SURE to use
EQUAL LENGTH FEED WIRES to the base insulators of each so they are fed in
phase. This creates an effective radiating conductor diameter as wide as
these are far apart....making it broadbanded as hell, a really good
thing.

"Feed Wires" ARE part of the ANTENNA and are NOT a transmission line. Do
not try to use coax cable all neatly tywrapped to the grounded rigging
between the tuner antenna insulator and the backstays. This is CRAZY!
Use #10 or larger insulated conductors, NOT SHIELDED, as short as you can
get them and as far away from anything metal as you can get it.

If you come through the steel hull with these antenna wires, we need a
fairly large hole with a feed-thru insulator to guide the RF away from
the grounded hull.
http://www.surplussales.com/Antennas/Antennas-6.html
Look at ICR 9548 near the top of this insulator page. The 4" "beehive"
goes on the outside of the boat. This makes a very long leakage path in
the wet outside environment and the smaller inside-the-hull side keeps
the hot RF wires away from the hull. Try NOT to come off these at 90
degree angles on either end. RF doesn't like to turn corners....come off
the insulator straight out with a bent lug then make a smooth curve where
you have to go, as much as practical. The hole in the hull is large to
reduce the capacitance between the high impedance RF high voltage and the
grounded hull sucking off your signal.
NO - sticking a piece of the center conductor covered with its poly core
in a hole in the hull is NOT acceptable. The poly won't last a year in
the sun, anyways.

Notice how important it is to keep the antenna wire between the tuner and
backstays away from the metal:
http://www.surplussales.com/Antennas/Ceramic_stof.html
Ol' Navy sure does a nice job of it....(c; DO NOT TYWRAP THE ANTENNA
WIRE TO ANYTHING METAL! Standoff insulators can be nicely made of common
white PVC water pipe and fittings. 3-4" stood off is great but only for
SHORT distances.

Your insulated backstay antenna is like most AM broadcast stations,
except AM stations use a resonant tower. Your 90' long backstay will be
self resonant on 234/90 = 2.6 Mhz and will radiate like mad around that
frequency in the old 2 Mhz marine band.... If we move the insulators down
from the top so there is great radiation in the 4.1 Mhz marine band, the
insulators should be 234/4.1 = 57' of backstay between them. The tuner
will make it tune the other bands by adding inductance and capacitance in
series and parallel. But, nothing radiates as good as a resonant
antenna. At 57' 1" long, that top insulator will also be far away from
the RF-draining mast. Go for it!..(c;

I like the 4 Mhz tuning because most all Caribbean yachties talk on that
band. It's useless in the daytime but at night you get solid coverage
from where you are straight out 500 miles in all directions. 4 Mhz
tuning also resonates the antenna at 3/4 wavelength on 12.3 Mhz, the best
DAYTIME marine band, too. You get two great resonant points at 57' 1".

Larry
--
QUOTE OF THE MONTH:
"I have been to several major Chinese cities and have seen first hand
shops crammed with obviously fake American products." - Jon Dudas,
Undersecretary of Commerce for Intellectual Property Rights.

How can they be fake? The Chinese make all "American Products" I use!

 

[Steve Lusardi]

Larry,
Thank you very much. I can do this easily, as the deck is contructed as a
steel space frame underneath and the deck is marine ply covered in teak. In
the aft cabin, I have 8' of headroom and can fasten the coupler to the
deckhead in the center of the span between the chain plates. I can maintain
a 6 inch spacing between the antenna feeds and any steel structure.
Steve

 

[Larry]

Larry,
Thank you very much. I can do this easily, as the deck is contructed
as a steel space frame underneath and the deck is marine ply covered
in teak. In the aft cabin, I have 8' of headroom and can fasten the
coupler to the deckhead in the center of the span between the chain
plates. I can maintain a 6 inch spacing between the antenna feeds and
any steel structure. Steve

Man, that's gonna be one LOUD voice in the darkness....(c;



Larry
--
QUOTE OF THE MONTH:
"I have been to several major Chinese cities and have seen first hand shops
crammed with obviously fake American products." - Jon Dudas, Undersecretary
of Commerce for Intellectual Property Rights.

How can they be fake? The Chinese make all "American Products" I use!

 

[Steve Lusardi]

Larry,
I suspect this will be one hell of a radiator, but the real performance of
the set will be in the antenna's ability to listen.
Steve

 

[Bruce in Alaska]

300 watts?......Oh, wait, I forgot to turn on the linear....(c;

Larry

Bzzzt, Wrong conclusion, Larry, would you like to try for what is behind
Door #3.......

Yes the SEA330 is a 300 Watt PEP Output Transceiver. It was designed
for Commercial Vessel and BaseStation Installations. It can be
configured for Multiple Full Function Control Heads. (Up to 8, with
Special Firmware, and 3000 Wire feet TR Box to Control Head, with #22
4 Pair Wire, with Special Conversions) and is fully GMDSS Certified with
the SEA GMDSS Controller. The campanion SEA1630 Autotuner is qualified
for 300 Watts, on Steel Hulls, and 35' Antennas, on any Frequency above
3.6Mhz. Oh, how I wish SEA had made a SEA330 version of their
SEA325 Tranceiver. Now that would be a Commercial Radio worth owning....

I have installed a Pile of them, as Limited Coast Stations, all over
Alaska, and a bunch of them on the bigger Catcher/Processor Vessels
that roam the North Pacific and are SOLAS/GMDSS Required.

Bruce in alaska

 

[Larry]

the antenna's ability to listen.

I learned with regret you had RF transparent decks. This means the
electronic controls of the stuff inside the boat can get to the
antenna outside the boat. Sorry.....


Larry
--
QUOTE OF THE MONTH:
"I have been to several major Chinese cities and have seen first hand
shops crammed with obviously fake American products." - Jon Dudas,
Undersecretary of Commerce for Intellectual Property Rights.

How can they be fake? The Chinese make all "American Products" I
use!