Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-03-2014, 19:17   #1
Registered User
 
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35. and 14ft.Whitehall pulling skiff.
Posts: 8,013
Images: 5
GAM SSB Antenna

Has anyone tried this yet? Seems simple but maybe a little over-priced. I like the concept...

GAM / McKim Split Lead Antenna | GAM Electronics
__________________

__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"

http://wwwjolielle.blogspot.com/
Celestialsailor is offline   Reply With Quote
Old 13-03-2014, 03:46   #2
Registered User
 
Auspicious's Avatar

Join Date: Jun 2003
Location: Chesapeake Bay
Boat: HR 40
Posts: 1,793
Send a message via Skype™ to Auspicious
Re: GAM SSB Antenna

Quote:
Originally Posted by Celestialsailor View Post
Has anyone tried this yet? Seems simple but maybe a little over-priced. I like the concept...

GAM / McKim Split Lead Antenna | GAM Electronics
Been around a long time. When it works it's fine to very good. When it doesn't it just fails to perform. The antenna models presented by the manufacturer extend the algorithms beyond the regime in which they are valid.

There are alternatives that are more reliable and predictable.
__________________

__________________
S/V Auspicious
AuspiciousWorks
Beware cut and paste sailors
Auspicious is offline   Reply With Quote
Old 13-03-2014, 08:30   #3
Registered User
 
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35. and 14ft.Whitehall pulling skiff.
Posts: 8,013
Images: 5
Re: GAM SSB Antenna

Quote:
Originally Posted by Auspicious View Post
Been around a long time. When it works it's fine to very good. When it doesn't it just fails to perform. The antenna models presented by the manufacturer extend the algorithms beyond the regime in which they are valid.

There are alternatives that are more reliable and predictable.
My concern was how it saw the backstay, being so close to it.
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"

http://wwwjolielle.blogspot.com/
Celestialsailor is offline   Reply With Quote
Old 15-09-2014, 08:53   #4
Registered User

Join Date: Oct 2013
Location: Puget Sound, WA
Boat: Beneteau Oceanis 40
Posts: 92
Re: GAM SSB Antenna

I have one and absolutely love it! It works great. On the trip from Seattle to San Francisco I was reported as one of the best signals on the net.

I am not sure how you think it is overpriced? Have you priced removing your backstay, having it cut and isolators swaged in, then reinstalled? The GAM is about the same price as the isolators alone.

One word about service - I was playing with the GTO-15 wire sometime after installation. I noticed that it would slide up quite a bit. Then I noticed that the elements were pushing out the top. So I called the GAM people and asked about this. He said "that is not right, what is your address and I will ship you a new one today. Then you can put your old one in the box and ship it back with the enclosed shipping label". Uuuummm... he didn't even ask when I had bought the thing.

Simple, fast installation and it works great for me.

Now I will get the tongues wagging - I also chose the KISS counterpoise. And it works great as well.
__________________
SVRapture40 is offline   Reply With Quote
Old 05-11-2017, 11:41   #5
Registered User

Join Date: Mar 2015
Location: New Zealand
Boat: Moana 33
Posts: 681
Re: GAM SSB Antenna

Quote:
Originally Posted by SVRapture40 View Post
I have one and absolutely love it! It works great. ...
Now I will get the tongues wagging - I also chose the KISS counterpoise. And it works great as well.
Great recommendation. I realise this post was 2014, but in case you are still in touch, maybe you can answer this one:
I need to install a midships antenna (backstay is just not practical for the AT location with my very cramped aft cabin arrangement). Do you think the GAM antenna could be fitted to the side stays, say upper shroud, with a twin spreader rig? (12.1m mast height above deck.) I realise it would not be as simple as sliding it up the shroud from the deck but I could go up the mast if it can be clipped on above and below spreader ends.

I've also asked the GAM folks - waiting for reply.

(I also installed the KISS - big improvement from my old dipole alone, once the AT installed to try to get more coverage.)
__________________
NevisDog is offline   Reply With Quote
Old 05-11-2017, 11:53   #6
Registered User

Join Date: Oct 2013
Location: Puget Sound, WA
Boat: Beneteau Oceanis 40
Posts: 92
Re: GAM SSB Antenna

Yes, I am still active. I don't know why you couldn't attach it to a side stay, if you have the length required. I would NOT try to jump past a spreader however. But that is just my opinion.

If it were me in your situation, I would install a vertical stick antenna. But that is just me...
__________________
http://SVRapture40.com
SVRapture40 is offline   Reply With Quote
Old 05-11-2017, 13:11   #7
Registered User

Join Date: Mar 2015
Location: New Zealand
Boat: Moana 33
Posts: 681
Re: GAM SSB Antenna

Quote:
Originally Posted by SVRapture40 View Post
... I would NOT try to jump past a spreader however. But that is just my opinion...
Why?
Thanks for such quick reply -most helpful- but I know little/nothing about antennas. Is it the bend around the spreader that would affect propagation, or is it the attachment method that presents a problem?

I've been taking advice from the Icom M710 forum and they recommended I consider a single wire close to shrouds or a GAM attached to them, so I must learn all I can about all possible solutions for midships antenna.
__________________
NevisDog is offline   Reply With Quote
Old 05-11-2017, 13:49   #8
Registered User

Join Date: Oct 2013
Location: Puget Sound, WA
Boat: Beneteau Oceanis 40
Posts: 92
Re: GAM SSB Antenna

A bend in the antenna would not be a good thing for a few reasons, longevity being one of them.

Why are you discounting a stick antenna? I worked an offshore net for a couple of years. My GAM and one guy that had a vertical stick were the two best receivers and transmitters on the net. And honestly, I would say that his rig was slightly better than mine.

Happy to help for sure!!! Good luck.
__________________
http://SVRapture40.com
SVRapture40 is offline   Reply With Quote
Old 05-11-2017, 18:01   #9
Registered User

Join Date: Mar 2015
Location: New Zealand
Boat: Moana 33
Posts: 681
Re: GAM SSB Antenna

Okay this is a great help.
I guess I never heard of a sailboat with a free-standing SSB antenna. I'd be concerned about mounting it on deck (would require some structural support), don't suppose it could be mounted on the mast, and any rope around it would destroy it for sure. Besides, the 7m length wouldn't seem much of an improvement on my 5m of dipole (the top half) that is currently fairly hopeless on any frequency I've tried.
__________________
NevisDog is offline   Reply With Quote
Old 05-11-2017, 18:48   #10
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,068
GAM SSB Antenna

I think it’s not uncommon for Cats to have a “stick” HF antenna, and of course nearly all powerboats that have an HF have a stick antenna.
Yes, they do have to be braced about half way up, or the ones I had on powerboats did. They perform very well, I would assume maybe better than a lot of backstay antennas as they seem to be sort of Rube Goldberg to me, mine is essentially a random length as I assume almost all are.
__________________
a64pilot is offline   Reply With Quote
Old 05-11-2017, 18:53   #11
Registered User

Join Date: Oct 2013
Location: Puget Sound, WA
Boat: Beneteau Oceanis 40
Posts: 92
Re: GAM SSB Antenna

Well, I don't want to beat a dead dog here.. I am not an antenna guru but I don't think 7m is required for a stick, my friend's is certainly not 7m. And his is mounted on the aft deck of his sailboat. I don't think he has any over the top bracing.. You definitely would NOT want to put it on top of your mast - way too far from your tuner.

That being said, mounted someplace mid ship might be a problem for lines and sails.

In any case, best of luck!
__________________
http://SVRapture40.com
SVRapture40 is offline   Reply With Quote
Old 05-11-2017, 19:32   #12
Senior Cruiser
 
IslandHopper's Avatar

Cruisers Forum Supporter

Join Date: Dec 2009
Location: Bundaberg Queensland/Lake Bolac Victoria, Australia
Boat: 45ft Ketch
Posts: 1,202
Re: GAM SSB Antenna

My 7m whip is deck mounted right aft on the outside of my pushpit and braced to the top rail, antenna tuner is virtually directly below it in the lazarette, connected using a deck-mount feed through insulator and about 15in of HV feeder cable, works like a charm....

This on a Ketch with no usable backstays.
__________________
Adventure before Dementia.
John....
IslandHopper is offline   Reply With Quote
Old 06-11-2017, 01:40   #13
Registered User

Join Date: Jul 2006
Location: Underway in the Med -
Boat: Jeanneau 40 DS SoulMates
Posts: 1,904
Images: 1
Re: GAM SSB Antenna

We have had one for 11 years - just renewed my ham license so easy to remember- sailed all the Carib from Fla to Colombia to Jamaica to Trini and constantly told we had one of the best ssb in the Carib -
we said across the Atlantic in 2013 and used winlink for weather out of Fla or Halifax all the way to the Azores -
Now in the Med and Black Sea - getting wx and winlink when we need it - ie no internet - and getting stations in Swiss, Germany, Bulgaria, Russia
We put it on our backstay and never an issue in 11 years
__________________

__________________
just our thoughts and opinions
chuck and svsoulmates
In Marmaris Turkey for the winter
chuckr is offline   Reply With Quote
Reply

Tags
antenna, ssb

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale: ICOM HAM/SSB radio, GAM antenna and ICOM AH-4 tuner. All for $899.00 Jentine Classifieds Archive 0 04-07-2013 11:00
For Sale: GAM SSB Antenna denny Classifieds Archive 6 03-03-2013 08:56
Gam split lead SSB antenna Sailaway08 Marine Electronics 7 02-03-2013 10:33
GAM Backstay Antenna Healer52 Marine Electronics 3 06-07-2010 11:44



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:14.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.