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[email protected] December 25th 04 05:19 PM

Modification of G5RV - need help on this
 
I am using a G5RV and an Icom 756Pro II. The auto antenna tuner will
tune the antenna fine except in the area of 3963.5 and up to at least
4.0385. I use 4.0385 as a member of MARS. Right now my SWR "as
shown" is well into the "red zone".

Is there any way to modify the antenna to get it to be a better match
so that the auto tuner can do its thing. The antenna is the shortened
or Jr. version with a ladder wire lead in.

Would changing the lead in to RG8 coax be a help??

Sure will appreciate some help. I am a novice at this and it is
important that I am able to use 4.083.5.


[email protected] December 25th 04 07:09 PM


wrote:
I am using a G5RV and an Icom 756Pro II. The auto antenna tuner will
tune the antenna fine except in the area of 3963.5 and up to at least
4.0385. I use 4.0385 as a member of MARS. Right now my SWR "as
shown" is well into the "red zone".

Is there any way to modify the antenna to get it to be a better match
so that the auto tuner can do its thing. The antenna is the shortened
or Jr. version with a ladder wire lead in.

Would changing the lead in to RG8 coax be a help??

Sure will appreciate some help. I am a novice at this and it is
important that I am able to use 4.083.5.


If it doesn't have to be an all band antenna, I would change to a coax
fed half wave dipole. You wouldn't need a tuner,
except to drop farther down the band, and your efficiency would
be high. To work all bands using the ladder line, I would get a
good external tuner. But the coax fed dipole will have the better
signal on 75m by a noticable amount over the jr-g5rv. The internal
radio
tuners are not really meant to match ladder line fed antennas. I
wouldn't
try to load anything over about a 5:1 mismatch with one myself. I
consider
them as "line flatteners" mainly. IE: good to provide a wider usable
bandwidth, with an already half decent match. MK


Bob Miller December 25th 04 07:51 PM

On Sat, 25 Dec 2004 17:19:56 GMT, wrote:

I am using a G5RV and an Icom 756Pro II. The auto antenna tuner will
tune the antenna fine except in the area of 3963.5 and up to at least
4.0385. I use 4.0385 as a member of MARS. Right now my SWR "as
shown" is well into the "red zone".

Is there any way to modify the antenna to get it to be a better match
so that the auto tuner can do its thing. The antenna is the shortened
or Jr. version with a ladder wire lead in.

Would changing the lead in to RG8 coax be a help??

Sure will appreciate some help. I am a novice at this and it is
important that I am able to use 4.083.5.


The problem is a resonant 1/2 wave dipole at the high end of 75 meters
is about 115-120 feet long. At 51 feet, your g5rv jr is less than a
quarter wavelength long at the desired frequencies. What is the
longest dipole you can put up (even if you zig-zag it and make it
crooked)?

bob
k5qwg



[email protected] December 25th 04 08:27 PM

pilaf, croissants
Apple cake with rum sauce, frosted banana nut bread sherbet, home made brownies
Iced tea, water, beer, bloody marys, lemonade, coffee

The guests select food, beverages, silverware... everything from the buffet table.
They move to wherever they are comfortable, and sit with whoever they choose.
Provide trays so your guests will not spill everything all over your house from
carrying too much, nor will they have to make 10 trips back and fourth from the
service stations.



Roast Leg of Amputee

By all means, substitute lamb or a good beef roast if the haunch
it is in any way diseased. But sometimes surgeons make mistakes,
and if a healthy young limb is at hand, then don?t hesitate to cook
it to perfection!

1 high quality limb, rack, or roast
Potatoes, carrot
Oil
celery
onions
green onions
parsley
garlic
salt, pepper, etc
2 cups beef stock

Marinate meat (optional, not necessary with better cuts).
Season liberally and lace with garlic cloves by making incisions,
and placing whole cloves deep into the meat.
Grease a baking pan, and fill with a thick bed of onions,
celery, green onions, and parsley.
Place roast on top with fat side up.
Place uncovered in 500° oven for 20 minutes, reduce oven to 325°.
Bake till medium rare (150°) and let roast rest.
Pour stock over onions and drippings, carve the meat and
place the slices in the au jus.



Bisque Ã* l?Enfant

Honor the memory of Grandma with this dish by utilizing her good
silver soup tureen and her great grandchildren



Reg Edwards December 25th 04 10:06 PM

Forget all about a G5RV. No sooner you modify it, it will no longer be a
G5RV. It was designed to be useful with an easy impedance match only at
14.15 MHz On other bands it cannot be no better, and is usually worse, than
any other random length supposedly multiband dipole.

All you have to do, to obtain the best possible mutliband dipole for your
back yard, is to erect a high dipole of any length which conveniently fits
into your backyard, fed via a 450-ohm or 600-ohm transmission line, of no
particular lemgth. The most important component in the system is the Tuner.
Invest in the tuner. It will last you for years on all bands. Ideally, have
one tuner for 10 to 30 Mhz and another for 1.8 to 7.5 MHz. You wont regret
it for multiband operation.
----
Reg, G4FGQ



Reg Edwards December 25th 04 10:06 PM

Boil the cabbage leaves for 2 minutes to soften.
In skillet, brown the meat in a little olive oil,
then add onions, peppers, and celery (all chopped finely)
and season well.
Place in a large bowl and cool.
Add seasoned breadcrumbs and a little of the tomato gravy,
enough to make the mixture pliable.
Divide the stuffing among the cabbage leaves then roll.
Place seam down in a baking pan.
Ladle tomato gravy on top,
and bake at 325° for 30 - 45 minutes.



Umbilical Cordon Bleu

Nothing is so beautiful as the bond between mother and child,
so why not consume it?
Children or chicken breasts will work wonderfully also.

4 whole umbilical chords (or baby breasts, or chicken breasts)
4 thin slices of smoked ham, and Gruyere cheese
Flour
eggwash (milk and eggs)
seasoned bread crumbs
1 onion
minced
salt
pepper
butter
olive oil

Pound the breasts flat (parboil first if using umbilical
cords so they won?t be tough).
Place a slice of ham and cheese on each, along with some minced onion
then fold in half, trimming neatly.
Dredge in flour, eggwash, then season



[email protected] December 25th 04 10:19 PM

Leviticus 26:29


Roast Child with Cornbread Stuffing

Turkey may be substituted for this classic holiday feast.
Although time consuming, this dish seems to take longer than it actually does;
as the entire house is filled with such a heavenly aroma,
the waiting becomes almost unbearable.

1 whole child, cleaned and de-headed
1 batch cornbread stuffing (see index)
½ cup melted butter

Remove the giblets from the infant and set aside.
Stuff the cavity where the child?s genitals and anus were located
using ½ cup per pound of meat.
Tie the arms flat to the body, then pull the skin flaps up to close the cavity.
Now tie the thighs up tight to hold it all together.
Place breast side up in a large metal roasting pan.
Bake in 325° oven covered for 2 hours.
Remove cover, stick a cooking thermometer deep into one of the
baby?s buttocks and cook uncovered till thermometer reads 190°,
about another hour.



Pro-Choice Po-Boy

Soft-shelled crabs serve just as well in this classic southern delicacy.
The sandwich originated in New Orleans, where an abundance of abortion clinics
thrive and hot French bread is always available.

2 cleaned fetuses, head on
2 eggs
1 tablespoon yellow mustard
1 cup seasoned flour
oil enough for deep frying
1 loaf French bread
Lettuce
tomatoes
mayonnaise, etc.

Marinate the fetuses in the egg-mustard mixture.
Dredge thoroughly in flour.
Fry at 375° until crispy golden brown.
Remove and place on paper towels.



Holiday Youngster

One can easily adapt this recipe to ham, though as presented,
it violates no religious taboos against swine.

1 large toddler or small child, cleaned and de-headed
Kentucky Bourbon Sauce (see index)
1 large can pineapple slices
W



F8BOE December 27th 04 06:21 AM

Hello,

Yes, easy... Modify it to obtain a Levy and add a Levy coupler.
Forget the direct coax feeding through a CB miracle-black-box. Use a longer
ladder line right to the Levy coupler, the dipole should be long enough.

73 de F8BOE Olivier ...-.-



a écrit dans le message de news:
...
I am using a G5RV and an Icom 756Pro II. The auto antenna tuner will
tune the antenna fine except in the area of 3963.5 and up to at least
4.0385. I use 4.0385 as a member of MARS. Right now my SWR "as
shown" is well into the "red zone".

Is there any way to modify the antenna to get it to be a better match
so that the auto tuner can do its thing. The antenna is the shortened
or Jr. version with a ladder wire lead in.

Would changing the lead in to RG8 coax be a help??

Sure will appreciate some help. I am a novice at this and it is
important that I am able to use 4.083.5.




Cecil Moore December 27th 04 11:55 PM

Reg Edwards wrote:
Forget all about a G5RV. No sooner you modify it, it will no longer be a
G5RV. It was designed to be useful with an easy impedance match only at
14.15 MHz


His is the 1/2 size G5RV, i.e. 51 feet total length, designed for
28 MHz. Terrible for 4 MHz operation.

All you have to do, to obtain the best possible mutliband dipole for your
back yard, is to erect a high dipole of any length which conveniently fits
into your backyard, fed via a 450-ohm or 600-ohm transmission line, of no
particular lemgth.


He wants to use his internal autotuner. Your idea won't work for that.
--
73, Cecil http://www.qsl.net/w5dxp


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Ralph Mowery December 28th 04 01:24 AM


wrote in message
...
I am using a G5RV and an Icom 756Pro II. The auto antenna tuner will
tune the antenna fine except in the area of 3963.5 and up to at least
4.0385. I use 4.0385 as a member of MARS. Right now my SWR "as
shown" is well into the "red zone".

Is there any way to modify the antenna to get it to be a better match
so that the auto tuner can do its thing. The antenna is the shortened
or Jr. version with a ladder wire lead in.

The Jr. version it too short to use much below 7 mhz. with a SWR the
internal tuner will match. Double the length of the legs for about 100 feet
overall. Beter yet , extend it to about 130 feet overall. You probably
would do beter to hook the wires together and use it as a single feed wire
and hook the other side of the rig to a good ground.




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