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From: Patrick Maun <patrick.maun_at_duffy.com>
subject: [Paddlewise] Weather radios
Date: 01 Mar 98 15:11:11 -0500
I'd love to hear which radio people are using that are stronger than 5W
that is also handheld, *and* contains a VHF radio. It is next to impossible
to pick up weather when out in the Apostle Islands. The Radio Shack route
just doesn't seem to work. Any tips?

-Patrick

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From: TomTotem... <gadfly_at_isomedia.com>
subject: [Paddlewise] VHF antennas [was: Weather radios]
Date: Sun, 01 Mar 1998 14:18:40 -0500
	Well...  as far as "VHF" goes, I have this neat Yeasu HT that puts out
about 6.5 watts...  -Oh... You mean "Marine VHF"??? <sorry, couldn't
resist>  I just bought a Standard, it's five watts also though.

	-Seems to me when I think about it, that the difference between 5 and 7
watts from a *practical* stand point [note the word "practical"] is not
that great.  The math escapes me right now, but I do remember the old
principle that the antenna is the real key.

	Anyone rigged up a J-pole for marine VHF and used it on a kayak?  I really
doubt that if one was in severe need of that extra gain, hooking one up
would be, practical, but <shrug> who knows?  I'm just a no-code
technician... [KB8UZD] <g>

		Take care,

			Tom

Kirkland, Wa.

At 03:11 PM 3/1/98 -0500, Patrick Maun wrote:
>I'd love to hear which radio people are using that are stronger than 5W
>that is also handheld, *and* contains a VHF radio. It is next to impossible
>to pick up weather when out in the Apostle Islands. The Radio Shack route
>just doesn't seem to work. Any tips?
>
>-Patrick
> 

	Tom Weese

Kirkland, Wa.

Three left turns often make a right...

<http://www.isomedia.com/homes/gadfly/>

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From: James Lofton <n5yyx_at_etsc.net>
subject: Re: [Paddlewise] VHF antennas [was: Weather radios]
Date: Sun, 01 Mar 1998 18:21:29 -0800
TomTotem... wrote:
> 
>         Well...  as far as "VHF" goes, I have this neat Yeasu HT that puts out
> about 6.5 watts...  -Oh... You mean "Marine VHF"??? <sorry, couldn't
> resist>  I just bought a Standard, it's five watts also though.
> 
>         -Seems to me when I think about it, that the difference between 5 and 7
> watts from a *practical* stand point [note the word "practical"] is not
> that great.  The math escapes me right now, but I do remember the old
> principle that the antenna is the real key.
> 
>         Anyone rigged up a J-pole for marine VHF and used it on a kayak?  I really
> doubt that if one was in severe need of that extra gain, hooking one up
> would be, practical, but <shrug> who knows?  I'm just a no-code
> technician... [KB8UZD] <g>
> 
>                 Take care,
> 
>                         Tom

Twice the power only ='s 1 "s" unit on the radio or 3db.


No Tom, I havn't tried a J-pole on a kayak(which would work very nicely 
as it needs no ground plane), but you can improve any HT's preformance as 
you said by changing the antenna. I would think that the 5/8th wave 2M 
antenna's would work for marine VHF by just shortning the thing a tad. 
Lets face it, about anything will beat the rubber duck!
I have two folding kayaks. One an old "super" folbot. That model is 17.5 
feet long and I have made a mount on it that allows me to attach a HF 
mobile antenna to and work all over the world while only using 5W's(QRP). 
By changing antenna's(ham sticks) I work 15M through 75M while on the 
water! A simple 1/4 wave antenna with a ground plane will work good on 2M 
or the marine VHF band as well!
BTW: Tom, there is no such thing as "only" a no code tech!!

73
James

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From: TomTotem... <gadfly_at_isomedia.com>
subject: Re: [Paddlewise] VHF antennas [was: Weather radios]
Date: Sun, 01 Mar 1998 18:40:51 -0500
At 06:21 PM 3/1/98 -0800, James Lofton wrote:

>Twice the power only ='s 1 "s" unit on the radio or 3db.

	That's what I was thinking, however I really haven't been on the air since
moving to the PNW about a year ago and am [ahem] "rusty..." ;-)

snip---->

>Lets face it, about anything will beat the rubber duck!

			<nodding my head with a smile>

>I have two folding kayaks. One an old "super" folbot. That model is 17.5 
>feet long and I have made a mount on it that allows me to attach a HF 
>mobile antenna to and work all over the world while only using 5W's(QRP). 
>By changing antenna's(ham sticks) I work 15M through 75M while on the 
>water! A simple 1/4 wave antenna with a ground plane will work good on 2M 
>or the marine VHF band as well!

			I think I was thinking of that old, um, coax connector <?> with five
rods, looked like a star... sheesh!  I am rusty...   Might be worth looking
in some of my books...  Thanks for the reminder here-you make it more clear
that increasing power a watt or two won't help much.  

			When I lived in Michigan [where "rain" usually means "LIGHTNING"] I
initially carried a portable AM/FM radio along with my weather radio.
Seems I could always get a broadcast station when I couldn't get NOAA...

			Eventually I bought the Yeasu FT 50, it gets broadcast bands as well as
2meters and 440, and is actually, [at least once-gulp] water proof.
['nother story]

>BTW: Tom, there is no such thing as "only" a no code tech!!

			Hear Hear! <G>

>73

				Back at ya...


			Tom...



	Tom Weese

Kirkland, Wa.

Three left turns often make a right...

<http://www.isomedia.com/homes/gadfly/>

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From: Bob Denton <bob_at_dnax.com>
subject: Re: [Paddlewise] VHF antennas [was: Weather radios]
Date: Mon, 2 Mar 1998 10:55:11 -5
The best choice for any marine vhf is a 1/2 wave dipole. It doesn't 
require a ground planbe which is critical to the operation of the 
5/8th and many other vhf antennas..

cya

W2PN


> Date:          Sun, 01 Mar 1998 18:21:29 -0800
> From:          James Lofton <n5yyx_at_etsc.net>
> To:            "TomTotem..." <gadfly_at_isomedia.com>
> Cc:            paddlewise_at_lists.intelenet.net
> Subject:       Re: [Paddlewise] VHF antennas [was: Weather radios]

> you said by changing the antenna. I would think that the 5/8th wave 2M 
> 
Bob Denton
Vice President 
Undersea Breathing Systems
bob_at_dnax.com
http://www.dnax.com
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From: Bob Denton <bob_at_dnax.com>
subject: Re: [Paddlewise] VHF antennas [was: Weather radios]
Date: Mon, 2 Mar 1998 10:50:16 -5
The difference between 5 and 8 wats would probably not be noticible 
under normal conditions but it may just make the difference between 
beinglost in the noice and being heard.

A vertical 1/2 wave dipole would be the obvious choice for a kayak. 
But the ability to have a strong signal from shore or camp seems 
important. Chances are, if your boat is capsized and flooded you 
antenna isn't going to perform all that well undewater.

A 160Mhz loop glassed into the fibreglass may be the answer though...

cya

AB4SD

> 
> 	Well...  as far as "VHF" goes, I have this neat Yeasu HT that puts out
> about 6.5 watts...  -Oh... You mean "Marine VHF"??? <sorry, couldn't
> resist>  I just bought a Standard, it's five watts also though.
> 
> 	-Seems to me when I think about it, that the difference between 5 and 7
> watts from a *practical* stand point [note the word "practical"] is not
> that great.  The math escapes me right now, but I do remember the old
> principle that the antenna is the real key.
> 
> 	Anyone rigged up a J-pole for marine VHF and used it on a kayak?  I really
> doubt that if one was in severe need of that extra gain, hooking one up
> would be, practical, but <shrug> who knows?  I'm just a no-code
> technician... [KB8UZD] <g>
> 
> 		Take care,
> 
> 			Tom
> 
> Kirkland, Wa.
> 
> At 03:11 PM 3/1/98 -0500, Patrick Maun wrote:
> >I'd love to hear which radio people are using that are stronger than 5W
> >that is also handheld, *and* contains a VHF radio. It is next to impossible
> >to pick up weather when out in the Apostle Islands. The Radio Shack route
> >just doesn't seem to work. Any tips?
> >
> >-Patrick
> > 
> 
> 	Tom Weese
> 
> Kirkland, Wa.
> 
> Three left turns often make a right...
> 
> <http://www.isomedia.com/homes/gadfly/>
> 
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> 
Bob Denton
Vice President 
Undersea Breathing Systems
bob_at_dnax.com
http://www.dnax.com
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From: Michael Edelman <mje_at_mich.com>
subject: Re: [Paddlewise] Weather radios
Date: Sun, 01 Mar 1998 17:42:06 -0500
Patrick Maun wrote:

> I'd love to hear which radio people are using that are stronger than 5W
> that is also handheld, *and* contains a VHF radio. It is next to impossible
> to pick up weather when out in the Apostle Islands. The Radio Shack route
> just doesn't seem to work. Any tips?

The biggest problem with all hand-held radios is that they have crummy
antennas. Those little "rubber ducks" are very lossy and have extrememly poor
transmit *and* receive performance.

The first thing you could do to make them work better would be to stash the
duck and replace it with a simple whip antenna approximately 14" long. That's
an electrical quarter wave at 170MHz, which should cover WX and Marine bands
well.

Even better would be a mast with a real marine antenna attached to your boat.
You could even put a radar reflector on the tip of the mast if you wanted. A
proper half wave vertical would do wonders. I've never experiemented with
marine VHF, but using a halfway decent antenna on a friend's sailboat on the
amateur 2M band (146MHz, which is pretty close) we were able to cover hundreds
of miles in good conditions with 25 watts.

-- mike
----------------------------------------
Michael J Edelman      mje_at_mich.com
http://www.mich.com/~mje
http://www.mich.com/~mje/kayak.html
http://www.mich.com/~mje/scope.html


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From: Bob Denton <bob_at_dnax.com>
subject: Re: [Paddlewise] Weather radios
Date: Mon, 2 Mar 1998 10:33:16 -5
I use the Standard VHF..5 watts, waterproof and $199.

One expression in amateur radio is a dime on the antenna is worth a 
dollar on the radio. The rubber duckies used on VHF radios are 
usually terrible, and evena simple wire antenna hung froma tree would 
make a dramatic difference.  I'd suggest a Jpole or dipole (made from 
TV twin lead ) cut for around 160Mhz.


> I'd love to hear which radio people are using that are stronger than 5W
> that is also handheld, *and* contains a VHF radio. It is next to impossible
> to pick up weather when out in the Apostle Islands. The Radio Shack route
> just doesn't seem to work. Any tips?
> 
> -Patrick
> 
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> 
> 
Bob Denton
Vice President 
Undersea Breathing Systems
bob_at_dnax.com
http://www.dnax.com
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