Posted by Sward (swardfullsail@…>)
Hello all,
I am considering installing a SSB-given to me by a friend. He said it is difficult mounting the antenna, and grounding it.
Does anyone have any solutions to those problems or had experience installing a SSB
Sward
s/v “Dream On”
Freedom32 #88
Posted by lance_ryley (lance_ryley@…>)
You might start here: http://www.budgetmarine.com/pdf/108.pdf
The truly essential parts of an SSB are the grounding and the power
wiring. On a Freedom with no backstay, your antenna options may be
limited to a fiberglass whip (23 feet?? yikes!), although with some
ingenuity, you might be able to rig an internal wire antenna inside
your mast. Bright Star, two owners ago, had SSB. The remnants of the
system are miles of copper foil in my bilge, a giant grounding plate,
and what I believe is the base of the antenna protruding from the
deck. I’m not positive, but they may have made a wire antenna that ran
up one of the running back stays.
I know there are lots of newer technologies than SSB for cross-ocean
communications, but when I sailed aboard “Belle Lurette” across the
Atlantic, there was a certain reassurance in being able to pick up
stations in the Pacific.
Good luck with your installation!
— In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…>
wrote:
Hello all,
I am considering installing a SSB-given to me by a friend. He said
it is difficult mounting the antenna, and grounding it.Does anyone have any solutions to those problems or had experience
installing a SSBSward
s/v “Dream On”
Freedom32 #88
Posted by lance_ryley (lance_ryley@…>)
Actually, this is a much better link:
http://www.pacificcup.org/98/racetips/radio_instal.html
Lance
— In freedomyachts2003@yahoogroups.com, “lance_ryley”
<lance_ryley@y…> wrote:
You might start here: http://www.budgetmarine.com/pdf/108.pdf
The truly essential parts of an SSB are the grounding and the
power
wiring. On a Freedom with no backstay, your antenna options may be
limited to a fiberglass whip (23 feet?? yikes!), although with
some
ingenuity, you might be able to rig an internal wire antenna
inside
your mast. Bright Star, two owners ago, had SSB. The remnants of
the
system are miles of copper foil in my bilge, a giant grounding
plate,
and what I believe is the base of the antenna protruding from the
deck. I’m not positive, but they may have made a wire antenna that
ran
up one of the running back stays.I know there are lots of newer technologies than SSB for cross-
ocean
communications, but when I sailed aboard “Belle Lurette” across
the
Atlantic, there was a certain reassurance in being able to pick up
stations in the Pacific.Good luck with your installation!
— In freedomyachts2003@yahoogroups.com, Sward
<swardfullsail@y…>
wrote:Hello all,
I am considering installing a SSB-given to me by a friend. He
said
it is difficult mounting the antenna, and grounding it.Does anyone have any solutions to those problems or had
experience
installing a SSBSward
s/v “Dream On”
Freedom32 #88
Posted by john reed (john-reed@…>)
Sward,
I’ve just
bought an icom M700 SSB for our F32.
I’ve been looking at the Shakespeare 390 whip but it’s not recommended
for heavy seas.
Since one
of the reasons for having the SSB is to scream for help on 2182 having to ship
the antenna when things get rough seems to be
a real limitation. I’ve considered running a 23 foot cable
with insulators up the pennant line and seeing how that does. Another possibility,
mentioned
by a sailor/ham was to antenna inside the mast. The mast is a conductor and is grounded so it should shield the
antenna. I’m
going to
give it a try while the boats in the yard and see if it works. I seriously doubt it.
Another
possibility is to drop the antenna from the masthead to the deck, mount
insulators and turnbuckles at both ends and run the antenna
lead through
the coach top. I should be getting
around to this part of the refit in a week or two and I’ll let you know what
seems to work best.
The other
real pain is the ground. There is
a ground plat on the bottom of the keel and it should work. I’m going to run a lead from a
grounding
rod to it
and see if the existing system ground works. There are a bunch of other possibilities including
counterpoise (see the book), trailing
a length
of copper mesh from the transom and encasing the keel in copper sheeting. I hope the keel plat work!
By the by,
I purchased an automatic tuner along with the radio. It was highly recommended by all of the ham folks I talked with.
John &
Karen Reed
Langsam
-----Original
Message-----
From:
freedomyachts2003@yahoogroups.com [mailto:freedomyachts2003@yahoogroups.com]On Behalf Of Sward
Sent: Thursday, July 28, 2005 8:19
AM
To:
Freedomyachts2003@yahoogroups.com
Subject: [freedomyachts2003]
Single Side Band
Hello all,
I am
considering installing a SSB-given to me by a friend. He said it is
difficult mounting the antenna, and grounding it.
Does anyone
have any solutions to those problems or had experience installing a SSB
Sward
s/v
“Dream On”
Freedom32 #88
Posted by Sward (swardfullsail@…>)
Thank you so much for your suggestions and help. Please let me know how you make out.
Swardjohn reed <john-reed@…> wrote:
Sward,
I’ve just bought an icom M700 SSB for our F32. I’ve been looking at the Shakespeare 390 whip but it’s not recommended for heavy seas.
Since one of the reasons for having the SSB is to scream for help on 2182 having to ship the antenna when things get rough seems to be
a real limitation. I’ve considered running a 23 foot cable with insulators up the pennant line and seeing how that does. Another possibility,
mentioned by a sailor/ham was to antenna inside the mast. The mast is a conductor and is grounded so it should shield the antenna. I’m
going to give it a try while the boats in the yard and see if it works. I seriously doubt it.
Another possibility is to drop the antenna from the masthead to the deck, mount insulators and turnbuckles at both ends and run the antenna
lead through the coach top. I should be getting around to this part of the refit in a week or two and I’ll let you know what seems to work best.
The other real pain is the ground. There is a ground plat on the bottom of the keel and it should work. I’m going to run a lead from a grounding
rod to it and see if the existing system ground works. There are a bunch of other possibilities including counterpoise (see the book), trailing
a length of copper mesh from the transom and encasing the keel in copper sheeting. I hope the keel plat work!
By the by, I purchased an automatic tuner along with the radio. It was highly recommended by all of the ham folks I talked with.
John & Karen Reed
Langsam
-----Original Message-----From: freedomyachts2003@yahoogroups.com [mailto:freedomyachts2003@yahoogroups.com]On Behalf Of SwardSent: Thursday, July 28, 2005 8:19 AMTo: Freedomyachts2003@yahoogroups.comSubject: [freedomyachts2003] Single Side Band
Hello all,
I am considering installing a SSB-given to me by a friend. He said it is difficult mounting the antenna, and grounding it.
Does anyone have any solutions to those problems or had experience installing a SSB
Sward
s/v “Dream On”
Freedom32 #88
Posted by Dennis (dbaril@…>)
A traditional rigged boat uses the back stay with insulators as the
SSB antenna – has anyone ever considred putting insulators on the
Freedom forestay and using it as an SSB antenna?
— In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…>
wrote:
Thank you so much for your suggestions and help. Please let me
know how you make out.Sward
john reed <john-reed@c…> wrote:
v:* {behavior:url(#default#VML);}o:* {behavior:url
(#default#VML);}w:* {behavior:url(#default#VML);}.shape
{behavior:url(#default#VML);}
Sward,I’ve just bought an icom M700 SSB for our F32. I’ve been looking
at the Shakespeare 390 whip but it’s not recommended for heavy seas.Since one of the reasons for having the SSB is to scream for help
on 2182 having to ship the antenna when things get rough seems to bea real limitation. I’ve considered running a 23 foot cable with
insulators up the pennant line and seeing how that does. Another
possibility,mentioned by a sailor/ham was to antenna inside the mast. The
mast is a conductor and is grounded so it should shield the
antenna. I’mgoing to give it a try while the boats in the yard and see if it
works. I seriously doubt it.Another possibility is to drop the antenna from the masthead to
the deck, mount insulators and turnbuckles at both ends and run the
antennalead through the coach top. I should be getting around to this
part of the refit in a week or two and I’ll let you know what seems
to work best.The other real pain is the ground. There is a ground plat on the
bottom of the keel and it should work. I’m going to run a lead from
a groundingrod to it and see if the existing system ground works. There are
a bunch of other possibilities including counterpoise (see the
book), trailinga length of copper mesh from the transom and encasing the keel in
copper sheeting. I hope the keel plat work!By the by, I purchased an automatic tuner along with the radio.
It was highly recommended by all of the ham folks I talked with.John & Karen Reed
Langsam
-----Original Message-----
From: freedomyachts2003@yahoogroups.com
[mailto:freedomyachts2003@yahoogroups.com]On Behalf Of Sward
Sent: Thursday, July 28, 2005 8:19 AM
To: Freedomyachts2003@yahoogroups.com
Subject: [freedomyachts2003] Single Side BandHello all,
I am considering installing a SSB-given to me by a friend. He
said it is difficult mounting the antenna, and grounding it.Does anyone have any solutions to those problems or had experience
installing a SSBSward
s/v “Dream On”
Freedom32 #88
SPONSORED LINKS
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Service.
Posted by john reed (john-reed@…>)
It looked
to me like the insulators would interfere with eyesnaps (or whatever they’re
called) that hold the jib to the
forestay. If you think not, I’d be very
interested in considering your solution.
Thanks
J&K
Langsam
-----Original
Message-----
From: freedomyachts2003@yahoogroups.com
[mailto:freedomyachts2003@yahoogroups.com]On
Behalf Of Dennis
Sent: Saturday, July 30, 2005
10:46 AM
To:
freedomyachts2003@yahoogroups.com
Subject: [freedomyachts2003] Re:
Single Side Band
A traditional rigged boat uses the back stay with insulators as
the
SSB antenna – has anyone ever considred putting insulators on the
Freedom forestay and using it as an SSB antenna?
— In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…>
wrote:
Thank you so much for your suggestions and help. Please let me
know how you make out.Sward
john reed <john-reed@c…> wrote:
v:* {behavior:url(#default#VML);}o:* {behavior:url
(#default#VML);}w:* {behavior:url(#default#VML);}.shape
{behavior:url(#default#VML);}
Sward,I’ve just bought an icom M700 SSB for our F32. I’ve been looking
at the Shakespeare 390 whip but it’s not recommended for heavy seas.
Since one of the reasons for having the SSB is to scream for help
on 2182 having to ship the antenna when things get rough seems to bea real limitation. I’ve considered running a 23 foot cable with
insulators up the pennant line and seeing how that does. Another
possibility,mentioned by a sailor/ham was to antenna inside the mast. The
mast is a conductor and is grounded so it should shield the
antenna. I’mgoing to give it a try while the boats in the yard and see if it
works. I seriously doubt it.Another possibility is to drop the antenna from the masthead to
the deck, mount insulators and turnbuckles at both ends and run the
antennalead through the coach top. I should be getting around to this
part of the refit in a week or two and I’ll let you know what seems
to work best.The other real pain is the ground. There is a ground plat on the
bottom of the keel and it should work. I’m going to run a lead from
a grounding
rod to it and see if the existing system ground works. There are
a bunch of other possibilities including counterpoise (see the
book), trailing
a length of copper mesh from the transom and encasing the keel in
copper sheeting. I hope the keel plat work!By the by, I purchased an automatic tuner along with the radio.
It was highly recommended by all of the ham folks I talked with.John & Karen Reed
Langsam
-----Original Message-----
From: freedomyachts2003@yahoogroups.com
[mailto:freedomyachts2003@yahoogroups.com]On Behalf Of Sward
Sent: Thursday, July 28, 2005 8:19 AM
To: Freedomyachts2003@yahoogroups.com
Subject: [freedomyachts2003] Single Side BandHello all,
I am considering installing a SSB-given to me by a friend. He
said it is difficult mounting the antenna, and grounding it.Does anyone have any solutions to those problems or had experience
installing a SSBSward
s/v “Dream On”
Freedom32 #88
SPONSORED LINKS
Sailing Boating Boating magazine Boating safety Caribbean sailing
Sailing schools
YAHOO! GROUPS LINKS
Visit your group "freedomyachts2003"
on the web.
To unsubscribe from this group, send an email
to:
freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the
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\
Posted by JoanJohn@… (JoanJohn@…)
They’re called hanks, and I know on my F45, I would have to eliminate the top hank and also put a stop above the lower insulator to take the force and weight of the furled jib. It would not be a favorable arrangement.
I am watching this conversation with interest because I am considering installing an SSB. I can’t offer much because I have not yet done my homework on it.
John Ernst
Hertford, NC
Posted by Paul McFadden (pwhitmac@…>)
Interesting idea. I can see that it may have potential as a location for the antenna, but I would wonder what affect the presence of the jib hanks, and the camber spar would have on the ability of the auto coupler to properly tune, and maintain the tune of the antenna (if you have an automatic coupler). There would be no problem as far as weight is concerned if you used the modern stay insulators. I had an insulated backstay on my last conventionally rigged boat and the load on the insulators was pretty grotesque! I never had a problem.
As far as the antenna tuning, this sounds like a question for Gordon West, or some one with more expertise in SSB antenna radiation than I have.
PWMDennis <dbaril@…> wrote:
A traditional rigged boat uses the back stay with insulators as the SSB antenna – has anyone ever considred putting insulators on the Freedom forestay and using it as an SSB antenna?— In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…> wrote:> Thank you so much for your suggestions and help. Please let me know how you make out.> > Sward> > john reed <john-reed@c…> wrote:> > > v:* {behavior:url(#default#VML);}o:* {behavior:url(#default#VML);}w:* {behavior:url(#default#VML);}.shape {behavior:url(#default#VML);}> Sward,> > I’ve just bought an icom M700 SSB for our F32. I’ve been looking at the Shakespeare 390 whip but it’s not recommended for heavy seas.> > Since one of the reasons for having the SSB is to
scream for help on 2182 having to ship the antenna when things get rough seems to be> > a real limitation. I’ve considered running a 23 foot cable with insulators up the pennant line and seeing how that does. Another possibility,> > mentioned by a sailor/ham was to antenna inside the mast. The mast is a conductor and is grounded so it should shield the antenna. I’m> > going to give it a try while the boats in the yard and see if it works. I seriously doubt it.> > > > Another possibility is to drop the antenna from the masthead to the deck, mount insulators and turnbuckles at both ends and run the antenna> > lead through the coach top. I should be getting around to this part of the refit in a week or two and I’ll let you know what seems to work best.> > > > The other real pain is the
ground. There is a ground plat on the bottom of the keel and it should work. I’m going to run a lead from a grounding> > rod to it and see if the existing system ground works. There are a bunch of other possibilities including counterpoise (see the book), trailing > > a length of copper mesh from the transom and encasing the keel in copper sheeting. I hope the keel plat work!> > > > By the by, I purchased an automatic tuner along with the radio. It was highly recommended by all of the ham folks I talked with.> > > > John & Karen Reed> > Langsam> > > > -----Original Message-----> From: freedomyachts2003@yahoogroups.com [mailto:freedomyachts2003@yahoogroups.com]On Behalf Of Sward> Sent: Thursday, July 28, 2005 8:19 AM> To:
Freedomyachts2003@yahoogroups.com> Subject: [freedomyachts2003] Single Side Band> > > > Hello all,> > > > I am considering installing a SSB-given to me by a friend. He said it is difficult mounting the antenna, and grounding it.> > > > Does anyone have any solutions to those problems or had experience installing a SSB> > > > Sward> > s/v “Dream On”> > Freedom32 #88> > > > > SPONSORED LINKS > Sailing Boating Boating magazine Boating safety Caribbean sailing Sailing schools > > ---------------------------------> YAHOO! GROUPS LINKS > > > Visit your group “freedomyachts2003” on the web.> > To unsubscribe from this group, send an email
to:> freedomyachts2003-unsubscribe@yahoogroups.com> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > ---------------------------------
Start your day with Yahoo! - make it your home page
Posted by rick_simonds (rick_simonds@…>)
I, too, am following this thread with great interest.
I’ve eyeballed the forestay many times as a possible antenna. My
question is: do you even need conventional insulators on it? The
bottom is hooked to the deck and the top to the mast. If you pull off
the bonding wire under the deck, is it electrically connected to
anything? Is it already electrically isolated?
It seems like some minor re-working of its connections to insure it’s
not electrically connected top or bottom would do the trick. The deck
end would be easy. Maybe, at most, just an insulator at the very top?
(Just my eyeball $0.02 worth….)
Rick
— In freedomyachts2003@yahoogroups.com, “john reed” <john-
reed@c…> wrote:
It looked to me like the insulators would interfere with eyesnaps
(or
whatever they’re called) that hold the jib to the
forestay. If you think not, I’d be very interested in considering
your
solution.Thanks
J&K
Langsam
Posted by Paul McFadden (pwhitmac@…>)
I think not insulating the forestay/antenna would create a major problen inasmuch as the CF mast IS a conductor, and unless you had some means to isolate the jibstay tang from the mast, you would have a problem. Another problem might be those occasions when the forestay contacts the cross bar on the bow pulpit, which does happen on my H32. On my boat to utilize the forestay (in theory) as an antenna, I would have to install the lower insulator just above the pulpit cross bar, and the upper one as high on the stay as I could get it by probably fitting the insulator with a rigging eye to fit the mast tang. There is another possible obstacle to this possible arrangement,from what I remember, they don’t give these insulators away. Especially the ones that have interchangeable ends.
PWMrick_simonds <rick_simonds@…> wrote:
I, too, am following this thread with great interest.I’ve eyeballed the forestay many times as a possible antenna. My question is: do you even need conventional insulators on it? The bottom is hooked to the deck and the top to the mast. If you pull off the bonding wire under the deck, is it electrically connected to anything? Is it already electrically isolated?It seems like some minor re-working of its connections to insure it’s not electrically connected top or bottom would do the trick. The deck end would be easy. Maybe, at most, just an insulator at the very top?(Just my eyeball $0.02 worth….)Rick— In freedomyachts2003@yahoogroups.com, “john reed” <john-reed@c…> wrote:> It looked to me like the insulators would interfere with eyesnaps (or> whatever they’re called) that
hold the jib to the> forestay. If you think not, I’d be very interested in considering your> solution.> > Thanks> > J&K> Langsam
Start your day with Yahoo! - make it your home page
Posted by n1ydy (n1ydy@…>)
On my f45 I have the antenna tuner mounted under the aft berth and a
short lead to a 23’ fiberglass antenna mounted on the transom and
supported by a standoff mounted to the pushpit. In the interest of
shortening the lead I might relocate the tuner to aft end of the
starboard lazzerrete.
As I understand it, the problems associated
with useing the headstay as an antenna are that:
1, the camberspar rides on the stay and is continously changing the
effective radio length of the stay, causing interference during
reception and swr problems during transmission.
2, the mast, made of carbon as it is, is conductive at the high
voltages that are present at the nonfeed end of an antenna(the
reason that many properly installed backstay antennas have two
insullators installed at the top).
3, even if you electrically insulated the stemhead/pulpit, the
lifelines are attached by clevises that will cause interference in
the same way as the camberspar riding on the headstay would.
4, the angle between the forestay and the deck would cause much of
the rf energy to be radiated up twards the sky, effectivly
shortening each bounce off of the ionosphere.
I’m no expert on any of this and the usual disclaimers apply!
Hank Brakman
s/v Ladyhawk
f45cc/#20
Posted by Paul McFadden (pwhitmac@…>)
Yeah, I pretty much agree with all you’ve said with the exception of item #4. By my own experience, I had excellent results both xmitting and receiving with an insulated back stay antenna. I daily contacted vessels and stations on the East Coast, Bermuda, and the Caribbean, all the way down the West Coast of the US enroute to Panama. Iv’e heard the theory of the altered radiation created by the angle of stay to deck, but have really come to believe that it is more of a ploy by the various antenna mfg’s to sell big expensive SSB antennae. That’s just my cynical take. Plus, calculating standing wave ratios is not the stable exact science the radio geeks would have us believe. That being said, I think a proper length/installed vertical whip antenna would theroetically perform better than a back stay antenna, but I think it would probably only be true in a controlled environment. As they say “IMHO”
PWMn1ydy <n1ydy@…> wrote:
On my f45 I have the antenna tuner mounted under the aft berth and a short lead to a 23’ fiberglass antenna mounted on the transom and supported by a standoff mounted to the pushpit. In the interest of shortening the lead I might relocate the tuner to aft end of the starboard lazzerrete.As I understand it, the problems associated with useing the headstay as an antenna are that:1, the camberspar rides on the stay and is continously changing the effective radio length of the stay, causing interference during reception and swr problems during transmission.2, the mast, made of carbon as it is, is conductive at the high voltages that are present at the nonfeed end of an antenna(the reason that many properly installed backstay antennas have two insullators installed at the top).3, even if you
electrically insulated the stemhead/pulpit, the lifelines are attached by clevises that will cause interference in the same way as the camberspar riding on the headstay would.4, the angle between the forestay and the deck would cause much of the rf energy to be radiated up twards the sky, effectivly shortening each bounce off of the ionosphere.I’m no expert on any of this and the usual disclaimers apply!Hank Brakmans/v Ladyhawkf45cc/#20
Yahoo! Mail for Mobile Take Yahoo! Mail with you! Check email on your mobile phone.
Posted by lance_ryley (lance_ryley@…>)
Just to add my own two cents, when you insulate a backstay, you
generally put the lower insulator higher than a normal hand-reach
(7’ or so) just to protect against the possibility of someone
grabbing the stay during transmission, which can result in radiation
burns. I’ll concede the chances are lower with the forestay, but
still possible. putting an insulator that high on the forestay would
increase the hank issues.
— In freedomyachts2003@yahoogroups.com, Paul McFadden
<pwhitmac@y…> wrote:
Yeah, I pretty much agree with all you’ve said with the exception
of item #4. By my own experience, I had excellent results both
xmitting and receiving with an insulated back stay antenna. I daily
contacted vessels and stations on the East Coast, Bermuda, and the
Caribbean, all the way down the West Coast of the US enroute to
Panama. Iv’e heard the theory of the altered radiation created by
the angle of stay to deck, but have really come to believe that it
is more of a ploy by the various antenna mfg’s to sell big expensive
SSB antennae. That’s just my cynical take. Plus, calculating
standing wave ratios is not the stable exact science the radio geeks
would have us believe. That being said, I think a proper
length/installed vertical whip antenna would theroetically perform
better than a back stay antenna, but I think it would probably only
be true in a controlled environment. As they say “IMHO”
PWMn1ydy <n1ydy@y…> wrote:
On my f45 I have the antenna tuner mounted under the aft berth and
a
short lead to a 23’ fiberglass antenna mounted on the transom and
supported by a standoff mounted to the pushpit. In the interest
of
shortening the lead I might relocate the tuner to aft end of the
starboard lazzerrete.As I understand it, the problems associated
with useing the headstay as an antenna are that:1, the camberspar rides on the stay and is continously changing
the
effective radio length of the stay, causing interference during
reception and swr problems during transmission.2, the mast, made of carbon as it is, is conductive at the high
voltages that are present at the nonfeed end of an antenna(the
reason that many properly installed backstay antennas have two
insullators installed at the top).3, even if you electrically insulated the stemhead/pulpit, the
lifelines are attached by clevises that will cause interference in
the same way as the camberspar riding on the headstay would.4, the angle between the forestay and the deck would cause much of
the rf energy to be radiated up twards the sky, effectivly
shortening each bounce off of the ionosphere.I’m no expert on any of this and the usual disclaimers apply!
Hank Brakman
s/v Ladyhawk
f45cc/#20SPONSORED LINKS
Sailing Boating Boating magazine Boating safety Caribbean sailing
Sailing schools
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Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
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Posted by Paul McFadden (pwhitmac@…>)
Right on all counts…PWMlance_ryley <lance_ryley@…> wrote:
Just to add my own two cents, when you insulate a backstay, you generally put the lower insulator higher than a normal hand-reach (7’ or so) just to protect against the possibility of someone grabbing the stay during transmission, which can result in radiation burns. I’ll concede the chances are lower with the forestay, but still possible. putting an insulator that high on the forestay would increase the hank issues.— In freedomyachts2003@yahoogroups.com, Paul McFadden <pwhitmac@y…> wrote:> Yeah, I pretty much agree with all you’ve said with the exception of item #4. By my own experience, I had excellent results both xmitting and receiving with an insulated back stay antenna. I daily contacted vessels and stations on the East Coast, Bermuda, and the Caribbean, all the way down the West Coast of the US enroute to
Panama. Iv’e heard the theory of the altered radiation created by the angle of stay to deck, but have really come to believe that it is more of a ploy by the various antenna mfg’s to sell big expensive SSB antennae. That’s just my cynical take. Plus, calculating standing wave ratios is not the stable exact science the radio geeks would have us believe. That being said, I think a proper length/installed vertical whip antenna would theroetically perform better than a back stay antenna, but I think it would probably only be true in a controlled environment. As they say “IMHO”> PWM> > n1ydy <n1ydy@y…> wrote:> On my f45 I have the antenna tuner mounted under the aft berth and a > short lead to a 23’ fiberglass antenna mounted on the transom and > supported by a standoff mounted to the pushpit. In the interest of > shortening the lead I might relocate the tuner to aft end of the
starboard lazzerrete.> > As I understand it, the problems associated > with useing the headstay as an antenna are that:> > 1, the camberspar rides on the stay and is continously changing the > effective radio length of the stay, causing interference during > reception and swr problems during transmission.> > 2, the mast, made of carbon as it is, is conductive at the high > voltages that are present at the nonfeed end of an antenna(the > reason that many properly installed backstay antennas have two > insullators installed at the top).> > 3, even if you electrically insulated the stemhead/pulpit, the > lifelines are attached by clevises that will cause interference in > the same way as the camberspar riding on the headstay would.> > 4, the angle between the forestay and the deck would cause much of > the rf energy to be radiated up
twards the sky, effectivly > shortening each bounce off of the ionosphere.> > I’m no expert on any of this and the usual disclaimers apply!> > Hank Brakman> s/v Ladyhawk> f45cc/#20 > > > > > > SPONSORED LINKS > Sailing Boating Boating magazine Boating safety Caribbean sailing Sailing schools > > ---------------------------------> YAHOO! GROUPS LINKS > > > Visit your group “freedomyachts2003” on the web.> > To unsubscribe from this group, send an email to:> freedomyachts2003-unsubscribe@yahoogroups.com> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > ---------------------------------> > > >
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Posted by isleblues (milo.militello@…>)
Just a thought - Peter Macrea races Panacea (F32) in the
Newport/Bermuda race quite often . . .
I’m sure he has figured out all the kinks with the SSB issues.
Does anyone know how to contact him? Unfortunately I don’t.
Milo
Posted by Fred Molden (fredmolden@…>)
Several years ago Peter published on the Freedom BB his recommendations for
SSB, a pushpit mounted SSB antenna and auto tuner. You might check the
archives.
Fred
----- Original Message -----
From: “isleblues” <milo.militello@…>
To: <freedomyachts2003@yahoogroups.com>
Sent: Monday, August 01, 2005 8:09 AM
Subject: [freedomyachts2003] Re: Single Side Band
\
Just a thought - Peter Macrea races Panacea (F32) in the
Newport/Bermuda race quite often . . .
I’m sure he has figured out all the kinks with the SSB issues.
Does anyone know how to contact him? Unfortunately I don’t.Milo
Yahoo! Groups Links
Posted by Ketch 22 (ketch_22@…>)
On the Cat Ketches that have been equipped with running backstays, it is quite
common to use one of the running backstays as the SSB antenna. Works great as
an antenna and also supports the mizzen mast when you fly your staysail.
Tom
Ketch 22
-----Original Message-----
From: freedomyachts2003@yahoogroups.com
Sent: Jul 31, 2005 4:57 AM
To: freedomyachts2003@yahoogroups.com
Subject: [freedomyachts2003] Digest Number 633
Message: 3
Date: Sat, 30 Jul 2005 22:41:12 EDT
From: JoanJohn@…
Subject: Re: Re: Single Side Band
They’re called hanks, and I know on my F45, I would have to eliminate the
top hank and also put a stop above the lower insulator to take the force and
weight of the furled jib. It would not be a favorable arrangement.
I am watching this conversation with interest because I am considering
installing an SSB. I can’t offer much because I have not yet done my homework
on
it.
John Ernst
Hertford, NC
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