Date   

April 25th Oyster Messabout - CANCELLED

Claire Acord
 

Friends
Because so many of our chapter members are in the age groups most at risk from SARS-CoV-2 and because of uncertainty about what kind of public gatherings will be allowed in April, event organizer Randy Jones and the chapter officers have cancelled this years April 25th Oyster Messabout.  
Please check the Puget Groups.IO forum and our chapter website www.tscapuget.org for further event status and breaking news.
Stay well
Claire
Stay afloat with current events....visit Traditional Small Craft Association - Puget Sound's website:
http://www.tscapuget.org
Claire Acord


Correction: Salish info

Bob Miller
 

If you're interested in Salish 100 info, the correct link is:


Apologies


Re: Lunch at Lebanon Shari's tomorrow

Jarom
 

Just wanted to give everyone a heads up that Lebanon just got two confirmed cases of COVID-19. I don't want to cause a panic, just wanted to make sure you knew. 


On Wed, Mar 11, 2020, 2:43 PM Bob Larkin <bob@...> wrote:
1:00 PM, Dennis and I will be at Shari's on Hwy 20 at Lebanon, 2650 S Santiam Hwy.  Everyone is invited.  To avoid the lunch time people, we will really try for 1:00, not earlier  :-)

Bob


Re: Electronics

Bob Miller
 

Current status = Handheld VHF(w/DSC) 6w, No AIS.
New status = Fixed VHF (w/splitter) somewhere over 6w up to 25w, realtime AIS
Difference = Net gain in safety.


March 2020 Salish 100 Update

Bob Miller
 

If you're interested in Salish 100 updates, they are available at Salish100@groups.io

The Organizing Team


Re: Lunch at Lebanon Shari's tomorrow

 

So, They let Dennis off the cruise ship! ;o)

Is this a one-off lunch at Shari's, or are we exploring new venues for a permanent move of the Coots' Thursday lunch?

https://goo.gl/maps/hodmCdubAFFRvxL3A

See you there.

On 3/11/2020 2:43 PM, Bob L wrote:
1:00 PM, Dennis and I will be at Shari's on Hwy 20 at Lebanon, 2650 S Santiam Hwy.  Everyone is invited.  To avoid the lunch time people, we will really try for 1:00, not earlier  :-)
--
John <@Jkohnen>
Falsehood flies, and truth comes limping after it. (Jonathan Swift)
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Lunch at Lebanon Shari's tomorrow

Bob Larkin
 

1:00 PM, Dennis and I will be at Shari's on Hwy 20 at Lebanon, 2650 S Santiam Hwy.  Everyone is invited.  To avoid the lunch time people, we will really try for 1:00, not earlier  :-)

Bob


Re: Electronics

johnacord
 

Found a good discussion of AIS and VHF, especially explaining splitter loss.  Here is the link:
https://sas.cruisingclub.org/sites/default/files/asset/AIS%20Article%20-%20InDesign-July%2030%20FINAL.pdf
and have attached the pdf.

Page 5 in the pdf explains splitters and their losses.

I think one might come to the conclusion that a splitter compromises safety. 

Even though the splitter will (typically) have amplification on the received signals (not on transmit!) amplification will increase both received signal and add noise.  As far as transmission there will be losses, minimally attributed to the additional connections and possibly do to splitter design.  It is hard to determine all this as info about the splitter design may be hard to find.  Sometimes you can tell from the specs but rarely so.

John A.

 


Re: Electronics

 

I strongly suspect that the antenna splitter defaults to letting the radio signal through if the power to the splitter is lost. But it does probably have a relay with contacts that could be damaged somehow, or just deteriorate with age. The overcompensation for the loss in the splitter is interesting. Why so much?

I'm rethinking my choice to use a splitter after I took a tape measure to Lazy Jack looking for good locations for a 1/4 wave dipole, and found one. <g>

The other day at Astoria I was talking to Bo and he mentioned having trouble figuring out which channel a call was coming in on when monitoring three channels on his radio. I mentioned that a Salish 100 support boat oughta have two VHF radios, one set to channel 16 and the other to the fleet channel, so you can just reply on the radio the call comes in on
. He said, "I did have two, but then I loaned you one!" Oops. This year I'm taking several VHF radios. <g> The "new" fixed mount radio and two handhelds, so I'll have two radios on all the time, and a backup I can loan to someone else if they have radio trouble, as I did last time.

Here's a list of useful VHF channels for the Salish Sea:

https://www.seattleyachtclub.org/vhf-marine-radio

On 3/9/2020 2:01 PM, Bob L wrote:
...
The splitter is a slight misnomer.  Because of the proximity of AIS and other marine VHF, it needs to also have a relay to disconnect the AIS when the VHF transmitter is on.  This needs circuitry and 12V power. The real issue is that you are putting all that hardware un-reliability into the path of the marine VHF antenna.  That being one of our major safety items.  A less major issue is that the Glomex includes a 15-dB preamp to make up for the splitter loss.   The 15-dB is way too much and will create potential VHF radio overload problems that Icom and Standard worked hard to not have.  A separate antenna dodges both of these issues.
--
John <@Jkohnen>
America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves. (Abraham Lincoln)
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Re: Radio and Navigation Workshop, March 21st in Toledo

elaineginader
 

Hi, I really want and need to go to this workshop but life is getting in the way. Please John schedule this for another day so some of us can attend that can't make it to this one. 

Happy sailing,  
Elaine

On Wed, Feb 26, 2020, 3:18 PM John Kohnen <jkohnen@...> wrote:
Some details on the workshop:

http://www.coots.org/mb/Electro/

It'll start with proper VHF radio usage and etiquette, then Bob will do
a presentation on Coastal Navigation in the Age of the Cell Phone, then
I'll do a section on using OpenCPN and Navionics, the two cheap nav
programs for mobile devices.

There will be opportunities to mix and mingle and help each other out
with our devices. There's good pizza across the street, mooring costs
only an optional donation to the Boathouses, and vehicle camping is free
in the parking lot. The tides are favorable for a trip up the Yaquina
River on Sunday for those wanting to make a weekend of it.

--
John <jkohnen@...>
The first human who hurled an insult instead of a stone was the founder
of civilization. (Sigmund Freud)





Re: Electronics

Bob Miller
 

Bob L - 

Thanks for the tips but I carry a bowsprit and boomkin and have no space on gunnels for anything that competes with lines for mizzen and gennaker, fender access, dingy boarding, or oar use. The masthead is it. It is what it is.


Re: Electronics

Bob Larkin
 

Bob M - Or, put it on the bow, or somewhere, and tie a (Coot?) flag to it :-)    Sort of like
http://www.janbob.com/boat/BW2/bw2_detail.htm
(scroll down about half way.)


Re: Electronics

 

IIRC, my AO27 was about $125 from Amazon several months ago. It looks like buying direct from the maker in the UK is a good way to go.

Sorry, Bob L, after some serious thought, I sent off for a Glomex antenna splitter like Bob M's. It'll make the installation a lot easier, without the need to string wires all over the place.

https://preview.tinyurl.com/swhjxge

or

https://www.boatandrvaccessories.com/products/glomex-ra201-antenna-splitter-vhf-ais-am-fm

I'm reminded of the time I bought a new lawnmower instead of fixing the carburettor on my old, beatup one. Charley rebuked me, "you didn't fix the problem, you just threw money at it!" <g> I gave him the bold lawnmower. I don't know if he ever fixed it either. <g> At least the splitter isn't very expensive...

On 3/8/2020 5:35 PM, Bob Miller wrote:
I got the A023 (smaller and simpler) direct from the UK. $84.20  + $13.35 Royal Mail.
https://www.quark-elec.com/product/qk-a023-ais-wireless-receiver/
--
John <@Jkohnen>
Life's more amusing than we thought. (Andrew Lang)
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Geodesic Aerolite Molds For Free

 

The Toledo Boathouses want to get the molds they used to build my Platt Monfort Classic 12, Whimsy, out of the way. If you've ever thought about building a Geodesic Aerolite boat these molds will give you a head start. I think the same molds can be used to build the Classic 10 and 14 too, but am not sure:

https://flic.kr/s/aHsmAVmsSP

http://gaboats.com/

Contact Toledo Jpoe if you want 'em: joenovello3 at gmail.com

--
John <@Jkohnen>
Think for yourself and question authority. (Timothy Leary)


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Cheadle Lake Paddle Saturday, the 14th

 

Jan M found this. A group in Lebanon is building and maintaining multi-use trails around the community -- including a "water trail" at Cheadle Lake. Please pardon the link to F******k:

https://preview.tinyurl.com/twszgy2

or

https://facebook.com/events/s/blts-cheadle-lake-water-trail-/823168874797722/?ti=icl

https://buildlebanontrails.com/

--
John <@Jkohnen>
The theory of democratic government is not that the will of the people is always right, but rather that normal human beings of average intelligence will, if given a chance, learn the right and best course by bitter experience. (W. E. B. Du Bois)


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Re: Electronics

Bob Miller
 

No cabin for me, open boat.


On Mon, Mar 9, 2020 at 2:09 PM Bob Larkin <bob@...> wrote:
Also, try to attach the top, vertical element of the AIS antenna alongside a window, going up to a the cabin top.  A bit of trim wood over it, a coat of varnish and it will look dazzling.   Bob


Re: Electronics

Bob Larkin
 

Also, try to attach the top, vertical element of the AIS antenna alongside a window, going up to a the cabin top.  A bit of trim wood over it, a coat of varnish and it will look dazzling.   Bob


Re: Electronics

Bob Larkin
 

A couple more thoughts.  The John A antenna would be acceptable using 2 ground plane elements instead of 4, making it 2D instead of 3D.  That often can be tucked into the wall of a boat as high as practical.  For AIS, it does what is needed, almost always.  I have used essentially that antenna for AIS for years and years, resulting in stories, like the speck on the horizon that, on the AIS, is 90,000 tons coming at 19 kts on a collision course.  Good info to have!!

The splitter is a slight misnomer.  Because of the proximity of AIS and other marine VHF, it needs to also have a relay to disconnect the AIS when the VHF transmitter is on.  This needs circuitry and 12V power.  The real issue is that you are putting all that hardware un-reliability into the path of the marine VHF antenna.  That being one of our major safety items.  A less major issue is that the Glomex includes a 15-dB preamp to make up for the splitter loss.   The 15-dB is way too much and will create potential VHF radio overload problems that Icom and Standard worked hard to not have.  A separate antenna dodges both of these issues.

Bob


Cheadle Lake Small Boats, Sat 14 March

Bob Larkin
 

I just got a note from Jan and Dick M. about a non-Coot event at Cheadle Lake.
It is sponsored by the Build Lebanon Trails organization and called, "Cheadle Lake Water Trail Paddle."  See
https://www.facebook.com/events/s/blts-cheadle-lake-water-trail-/823168874797722/
for details.

I hope to go there, Saturday, but may have a conflict.

Bob


Re: Electronics

Bob Miller
 

This looks like a good DIY solution but I have no convenient or desirable place to mount it on my open 21'9" yawl. That's why I have chosen the multi-function whip antenna to place high and away with a splitter. Different solutions for different cases.


On Mon, Mar 9, 2020 at 10:05 AM johnacord <jcacord@...> wrote:
John,

That's the antenna I was describing!  Thanks for posting the picture.

I had that antenna mounted on the stern of our Gulf 32 and would receive the AIS signal at the max range of VHF even though it was mounted low and around a lot of rigging wires etc.

John A.