Re: Party Time: Sept 3, Friday
Hiro, Very much looking forward to it. Thank
you!
?
Neil Murphy
650.375.0886 wrk
650.533.2015 mobile
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Re: Party Time: Sept 3, Friday
Great. I look forward to meeting your wife and the new baby. Hiroki
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--- On Sun, 8/22/10, Nick Garner wrote: From: Nick Garner Subject: Re: [QRPops] Party Time: Sept 3, Friday To: QRPops@... Date: Sunday, August 22, 2010, 7:39 PM
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Hello Hiro and Crew, Kazumi and I will stop by with the baby for a bit as well.
Nick On Sun, Aug 22, 2010 at 7:11 PM, Tim Dolan <cyclist@...> wrote:
?
Thank you for the invitation Hiro. I look forward to the get together. Also, it will present a great opportunity to ensure that Rhona makes a few Q's.
Tim --- On Fri, 8/20/10, Hiroki Kato <hiroki@...> wrote:
Subject: [QRPops] Party Time: Sept 3, Friday
To: QRPops@...
Date: Friday, August 20, 2010, 5:37 PM
?
QRPopsters,
I am going to have an open-house/picnic/operating for the QRPops members and their spouses/significant others and children at my house. My XYL, who is tolerant of my ham activities but not overly enthusiastic, will be away for a few days and I am taking a full advantage of her absence. Here are the details. (Nick, you can bring your baby son if you like: I have a nice quiet room for him and his mother to take a nap.)
DATE: Friday, Sept 3. 11am -5pm. ?
I know this is not an optimum day/time for many of you. You are not only
welcome to just drop by for any length of time or just for a quick
lunch or drink during the 6 hour period.
PLACE: My house and its deck. 3 Sandstone St., ?Portola Valley 94028
If you get lost on the way my cell ?is 415 713 0369 and landline is 650 851 4448.
From 280, get off at Alpine
Rd and go west. It's about 4 miles from the junction.?Turn left onto Indian Crossing. Go 1/4 mile and turn left at the first stop sign, drive up the hill (Sandstone St) a few hundred meters and go around the island. You will see the house number ("3") on the curb and the pos box.
EATS and DRINKS: Hot dogs, corn, beer and soft drinks. For vegetarians I will have tofu and eggplant. Any special dietary restricted people will be accommodated if let me know
WHAT TO BRING: Nothing required. You can bring your QRP rigs if you want to operate from the deck. No 5 element portable Yagis or quads please.
RSVP with a number of people you are bringing so that I will have enough food for everyone to eat and drink.
I hope to see many of you.
73,
Hiroki AH6CY ?
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Re: Party Time: Sept 3, Friday
Hello Hiro and Crew, Kazumi and I will stop by with the baby for a bit as well.
Nick
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On Sun, Aug 22, 2010 at 7:11 PM, Tim Dolan <cyclist@...> wrote:
?
Thank you for the invitation Hiro. I look forward to the get together. Also, it will present a great opportunity to ensure that Rhona makes a few Q's.
Tim --- On Fri, 8/20/10, Hiroki Kato <hiroki@...> wrote:
Subject: [QRPops] Party Time: Sept 3, Friday
To: QRPops@...
Date: Friday, August 20, 2010, 5:37 PM
?
QRPopsters,
I am going to have an open-house/picnic/operating for the QRPops members and their spouses/significant others and children at my house. My XYL, who is tolerant of my ham activities but not overly enthusiastic, will be away for a few days and I am taking a full advantage of her absence. Here are the details. (Nick, you can bring your baby son if you like: I have a nice quiet room for him and his mother to take a nap.)
DATE: Friday, Sept 3. 11am -5pm. ?
I know this is not an optimum day/time for many of you. You are not only
welcome to just drop by for any length of time or just for a quick
lunch or drink during the 6 hour period.
PLACE: My house and its deck. 3 Sandstone St., ?Portola Valley 94028
If you get lost on the way my cell ?is 415 713 0369 and landline is 650 851 4448.
From 280, get off at Alpine
Rd and go west. It's about 4 miles from the junction.?Turn left onto Indian Crossing. Go 1/4 mile and turn left at the first stop sign, drive up the hill (Sandstone St) a few hundred meters and go around the island. You will see the house number ("3") on the curb and the pos box.
EATS and DRINKS: Hot dogs, corn, beer and soft drinks. For vegetarians I will have tofu and eggplant. Any special dietary restricted people will be accommodated if let me know
WHAT TO BRING: Nothing required. You can bring your QRP rigs if you want to operate from the deck. No 5 element portable Yagis or quads please.
RSVP with a number of people you are bringing so that I will have enough food for everyone to eat and drink.
I hope to see many of you.
73,
Hiroki AH6CY ?
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Re: Party Time: Sept 3, Friday
Thank you for the invitation Hiro. I look forward to the get together. Also, it will present a great opportunity to ensure that Rhona makes a few Q's.
Tim
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Show quoted text
--- On Fri, 8/20/10, Hiroki Kato wrote: From: Hiroki Kato Subject: [QRPops] Party Time: Sept 3, Friday To: QRPops@... Date: Friday, August 20, 2010, 5:37 PM
?
QRPopsters,
I am going to have an open-house/picnic/operating for the QRPops members and their spouses/significant others and children at my house. My XYL, who is tolerant of my ham activities but not overly enthusiastic, will be away for a few days and I am taking a full advantage of her absence. Here are the details. (Nick, you can bring your baby son if you like: I have a nice quiet room for him and his mother to take a nap.)
DATE: Friday, Sept 3. 11am -5pm. ?
I know this is not an optimum day/time for many of you. You are not only
welcome to just drop by for any length of time or just for a quick
lunch or drink during the 6 hour period.
PLACE: My house and its deck. 3 Sandstone St., ?Portola Valley 94028
If you get lost on the way my cell ?is 415 713 0369 and landline is 650 851 4448.
From 280, get off at Alpine
Rd and go west. It's about 4 miles from the junction.?Turn left onto Indian Crossing. Go 1/4 mile and turn left at the first stop sign, drive up the hill (Sandstone St) a few hundred meters and go around the island. You will see the house number ("3") on the curb and the pos box.
EATS and DRINKS: Hot dogs, corn, beer and soft drinks. For vegetarians I will have tofu and eggplant. Any special dietary restricted people will be accommodated if let me know
WHAT TO BRING: Nothing required. You can bring your QRP rigs if you want to operate from the deck. No 5 element portable Yagis or quads please.
RSVP with a number of people you are bringing so that I will have enough food for everyone to eat and drink.
I hope to see many of you.
73,
Hiroki AH6CY ?
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Re: Party Time: Sept 3, Friday
Great. You can bring your FT817 and antenna and test your set up. You may be able to have your first QSO if not already. ?There will be plenty of OMs to show you how. You can bring your daughters, too, if they are interested. If they get bored they can read books, ?watch DVDs or TV downstairs, undisturbed by ham activities upstairs and on the deck.
Hiroki AH6CY
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--- On Sun, 8/22/10, Rhona Mahony wrote: From: Rhona Mahony Subject: Re: [QRPops] Party Time: Sept 3, Friday To: QRPops@... Date: Sunday, August 22, 2010, 4:56 PM
?
Thank you, Hiroki, I will come.
Looking forward to it!
~~Rhona
--
Rhona Mahony
rmahony@...
----- Original Message -----
From: Hiroki Kato <hiroki@...>
To: QRPops@...
Sent: Fri, 20 Aug 2010 17:37:06 -0700 (PDT)
Subject: [QRPops] Party Time: Sept 3, Friday
QRPopsters,
I am going to have an open-house/picnic/operating for the QRPops members and their spouses/significant others and children at my house. My XYL, who is tolerant of my ham activities but not overly enthusiastic, will be away for a few days and I am taking a full advantage of her absence. Here are the details. (Nick, you can bring your baby son if you like: I have a nice quiet room for him and his mother to take a nap.)
DATE: Friday, Sept 3. 11am -5pm. ?
I know this is not an optimum day/time for many of you. You are not only welcome to just drop by for any length of time or just for a quick lunch or drink during the 6 hour period.
PLACE: My house and its deck. 3 Sandstone St., ?Portola Valley 94028
If you get lost on the way my cell ?is 415 713 0369 and landline is 650 851 4448.
From 280, get off at Alpine
Rd and go west. It's about 4 miles from the junction.?Turn left onto Indian Crossing. Go 1/4 mile and turn left at the first stop sign, drive up the hill (Sandstone St) a few hundred meters and go around the island. You will see the house number ("3") on the curb and the pos box.
EATS and DRINKS: Hot dogs, corn, beer and soft drinks. For vegetarians I will have tofu and eggplant. Any special dietary restricted people will be accommodated if let me know
WHAT TO BRING: Nothing required. You can bring your QRP rigs if you want to operate from the deck. No 5 element portable Yagis or quads please.
RSVP with a number of people you are bringing so that I will have enough food for everyone to eat and drink.
I hope to see many of you.
73,
Hiroki AH6CY?
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Re: Party Time: Sept 3, Friday
Thank you, Hiroki, I will come. Looking forward to it! ~~Rhona
-- Rhona Mahony rmahony@...
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----- Original Message ----- From: Hiroki Kato <hiroki@...> To: QRPops@... Sent: Fri, 20 Aug 2010 17:37:06 -0700 (PDT) Subject: [QRPops] Party Time: Sept 3, Friday
QRPopsters, I am going to have an open-house/picnic/operating for the QRPops members and their spouses/significant others and children at my house. My XYL, who is tolerant of my ham activities but not overly enthusiastic, will be away for a few days and I am taking a full advantage of her absence. Here are the details. (Nick, you can bring your baby son if you like: I have a nice quiet room for him and his mother to take a nap.) DATE: Friday, Sept 3. 11am -5pm. ? I know this is not an optimum day/time for many of you. You are not only welcome to just drop by for any length of time or just for a quick lunch or drink during the 6 hour period. PLACE: My house and its deck. 3 Sandstone St., ?Portola Valley 94028 If you get lost on the way my cell ?is 415 713 0369 and landline is 650 851 4448. From 280, get off at Alpine Rd and go west. It's about 4 miles from the junction.?Turn left onto Indian Crossing. Go 1/4 mile and turn left at the first stop sign, drive up the hill (Sandstone St) a few hundred meters and go around the island. You will see the house number ("3") on the curb and the pos box. EATS and DRINKS: Hot dogs, corn, beer and soft drinks. For vegetarians I will have tofu and eggplant. Any special dietary restricted people will be accommodated if let me know WHAT TO BRING: Nothing required. You can bring your QRP rigs if you want to operate from the deck. No 5 element portable Yagis or quads please. RSVP with a number of people you are bringing so that I will have enough food for everyone to eat and drink. I hope to see many of you. 73, Hiroki AH6CY
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Re: Party Time: Sept 3, Friday
I will be there and
I will leave my portable sterba curtain at home.
?
73,
Dave,
W6DLF
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Party Time: Sept 3, Friday
QRPopsters,
I am going to have an open-house/picnic/operating for the QRPops members and their spouses/significant others and children at my house. My XYL, who is tolerant of my ham activities but not overly enthusiastic, will be away for a few days and I am taking a full advantage of her absence. Here are the details. (Nick, you can bring your baby son if you like: I have a nice quiet room for him and his mother to take a nap.)
DATE: Friday, Sept 3. 11am -5pm. ?
I know this is not an optimum day/time for many of you. You are not only welcome to just drop by for any length of time or just for a quick
lunch or drink during the 6 hour period.
PLACE: My house and its deck. 3 Sandstone St., ?Portola Valley 94028
If you get lost on the way my cell ?is 415 713 0369 and landline is 650 851 4448.
From 280, get off at Alpine
Rd and go west. It's about 4 miles from the junction.?Turn left onto Indian Crossing. Go 1/4 mile and turn left at the first stop sign, drive up the hill (Sandstone St) a few hundred meters and go around the island. You will see the house number ("3") on the curb and the pos box.
EATS and DRINKS: Hot dogs, corn, beer and soft drinks. For vegetarians I will have tofu and eggplant. Any special dietary restricted people will be accommodated if let me know
WHAT TO BRING: Nothing required. You can bring your QRP rigs if you want to operate from the deck. No 5 element portable Yagis or quads please.
RSVP with a number of people you are bringing so that I will have enough food for everyone to eat and drink.
I hope to see many of you.
73,
Hiroki AH6CY ?
|
|
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Re: 40-meter stealth vertical for balcony
Well - sounds like you've got all the gear ready to go. the site in the sierras should have worked, provided propagation was favorable of course.
Not sure what youre describing as distortion - it maybe a setting on the radio with either incorrect side-band or filter selection?
As for the band openings - as you may know, recently the sunspot activity is up, so conditions on the higher bands are prolonged into the evening (well after sunset). I found 20m had good openings till around 9pm PDT and you may want to try that band? This past weekend with the NAQP CW test, 40m was very active all night.
Grayline always adds to the propagation so you may want to try during these times instead of middle-of the day.
Just keep at it - maybe verify the proper radio settings, first?
Safe travels - enjoy the islands. Should be very nice to operate from a portable setup there!
Deon / k6wh
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--- In QRPops@..., Rhona Mahony <rmahony@...> wrote: Deon, thank you for asking. I have slowly assembled the parts for the 40-meter vertical, but not yet built it. I have been camping a lot in the Sierras, at 8500 feet, experimenting with a 20-meter vertical (4 radials) and a 40-10-meter Norcal Doublet dipole. I have been listening on 40 through 20 around 12 to 2 pm and then 8 to 9 pm. I have had very little luck. At midday, on 20 meters, the voices are very distorted. The antenna was set up on a small plateau at the edge of a precipice facing west. In the evening, on the 40-20 meter dipole, I heard a little. A net in the Santa Cruz area, for example. I have been fooling with the passband filter of my Yaesu FT-817. It helps clarify some voices. Tell me what time what bands seem to be opening! I am going to Kauai tomorrow morning, 8/10. I am bringing my FT-817 and both antennas. I admit to feeling frustrated. I haven't talked to anyone on HF yet! I expect that are a few crucial things that I don't know that are hindering me. I will read the site you linked to. Thanks! ~~Rhona
-- Rhona Mahony rmahony@...
----- Original Message ----- From: capesafari <ft7800@...> To: QRPops@... Sent: Mon, 09 Aug 2010 21:10:38 -0700 (PDT) Subject: [QRPops] Re: 40-meter stealth vertical for balcony
Wonder how the vertical experiments are going and if you all are enjoying the summer time late night band openings?
I came across this bookmark, and I thought I'd pass it along. This www site contains interesting data about experiements with radials for vertical configurations.
73, Deon
--- In QRPops@..., "capesafari" <ft7800@> wrote:
Rhona
Im using the 33ft MFJ pole - (HRO stock) but they all work the same. Choose fibreglass over Graphite composites - which can couple to the wire, and will affect the efficiency.
If you can run elevated at an angle, probably best, but at the end it's all a compromise. Just a matter of what works best in your situation. Remember any length if wire you can get in the air outside, is probably better than something indoors.
I think the antenna modeling s/w will help with viewing radiation patterns. I have not done that.
Also think abt experimenting with a small loop design.
I'm fortunate in my location to be on salt-water - so the vertical is a good choice for low angle radiation...
Good luck with the experiments...
73, Deon
--- In QRPops@..., Neil Murphy <neil@> wrote:
Hey Rhona,
I note that eBay has a 31ft Jackite pole for $59 - with shipping it looks like that's the $70 you mention. Seems high, but maybe they've gone up since I bought mine. I have the 28 foot version. If you wrap 33ft of wire around it in a helix, you're all set for 40m. Or you can attach one end of your antenna wire to the tip, let it run along the mast until it's about half way down, wrap ~ 5ft of 'coil' and continue the rest to the base. That will probably put you too low on 40M because it won't take that much coiled wire to lower the rez. freq. -- so you can unwind some of it to get a better match. Make a helix around the mast with any extra wire.
I have thrown this antenna up at AmTech and with one ~25ft radial a few feet off the ground worked TX with 2.5 watts. Two radials at 90 degrees would probably be better... and more just draped from eves, trees, your husband, dog, whatever, will give you something to fuss around with and see what happens. It's all just fun, after all. Have some, Neil
On 7/23/2010 9:14 AM, Rhona Mahony wrote:
Thanks for describing your antenna, Deon. I had been thinking of using 12 awg stranded wire, for a little more bandwidth and to withstand the stresses of frequent extension and recoiling as I telescope the pole up and down. Good to know that even 26 awg solid wire works fine. Do you have the Jackite pole ($70, tip 3/16 inches) or the Mast Company ($115, tip 5/16 inches) or something else? Comments on what you have? Does a vertical with one elevated radial really have a pronounced null? Where is it? If my angle of separation for 2 radials would be less than 90 degrees, should I try two radials? I have the ARRL Antenna Handbook, which I find a little too theoretical, but helpful anyway. Thanks! ~~Rhona
------------------------------------
Yahoo! Groups Links
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Re: 40-meter stealth vertical for balcony
Deon, thank you for asking. I have slowly assembled the parts for the 40-meter vertical, but not yet built it. I have been camping a lot in the Sierras, at 8500 feet, experimenting with a 20-meter vertical (4 radials) and a 40-10-meter Norcal Doublet dipole. I have been listening on 40 through 20 around 12 to 2 pm and then 8 to 9 pm. I have had very little luck. At midday, on 20 meters, the voices are very distorted. The antenna was set up on a small plateau at the edge of a precipice facing west. In the evening, on the 40-20 meter dipole, I heard a little. A net in the Santa Cruz area, for example. I have been fooling with the passband filter of my Yaesu FT-817. It helps clarify some voices. Tell me what time what bands seem to be opening! I am going to Kauai tomorrow morning, 8/10. I am bringing my FT-817 and both antennas. I admit to feeling frustrated. I haven't talked to anyone on HF yet! I expect that are a few crucial things that I don't know that are hindering me. I will read the site you linked to. Thanks! ~~Rhona
-- Rhona Mahony rmahony@...
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Show quoted text
----- Original Message ----- From: capesafari <ft7800@...> To: QRPops@... Sent: Mon, 09 Aug 2010 21:10:38 -0700 (PDT) Subject: [QRPops] Re: 40-meter stealth vertical for balcony Wonder how the vertical experiments are going and if you all are enjoying the summer time late night band openings? I came across this bookmark, and I thought I'd pass it along. This www site contains interesting data about experiements with radials for vertical configurations. 73, Deon --- In QRPops@..., "capesafari" <ft7800@...> wrote: Rhona
Im using the 33ft MFJ pole - (HRO stock) but they all work the same. Choose fibreglass over Graphite composites - which can couple to the wire, and will affect the efficiency.
If you can run elevated at an angle, probably best, but at the end it's all a compromise. Just a matter of what works best in your situation. Remember any length if wire you can get in the air outside, is probably better than something indoors.
I think the antenna modeling s/w will help with viewing radiation patterns. I have not done that.
Also think abt experimenting with a small loop design.
I'm fortunate in my location to be on salt-water - so the vertical is a good choice for low angle radiation...
Good luck with the experiments...
73, Deon
--- In QRPops@..., Neil Murphy <neil@> wrote:
Hey Rhona,
I note that eBay has a 31ft Jackite pole for $59 - with shipping it looks like that's the $70 you mention. Seems high, but maybe they've gone up since I bought mine. I have the 28 foot version. If you wrap 33ft of wire around it in a helix, you're all set for 40m. Or you can attach one end of your antenna wire to the tip, let it run along the mast until it's about half way down, wrap ~ 5ft of 'coil' and continue the rest to the base. That will probably put you too low on 40M because it won't take that much coiled wire to lower the rez. freq. -- so you can unwind some of it to get a better match. Make a helix around the mast with any extra wire.
I have thrown this antenna up at AmTech and with one ~25ft radial a few feet off the ground worked TX with 2.5 watts. Two radials at 90 degrees would probably be better... and more just draped from eves, trees, your husband, dog, whatever, will give you something to fuss around with and see what happens. It's all just fun, after all. Have some, Neil
On 7/23/2010 9:14 AM, Rhona Mahony wrote:
Thanks for describing your antenna, Deon. I had been thinking of using 12 awg stranded wire, for a little more bandwidth and to withstand the stresses of frequent extension and recoiling as I telescope the pole up and down. Good to know that even 26 awg solid wire works fine. Do you have the Jackite pole ($70, tip 3/16 inches) or the Mast Company ($115, tip 5/16 inches) or something else? Comments on what you have? Does a vertical with one elevated radial really have a pronounced null? Where is it? If my angle of separation for 2 radials would be less than 90 degrees, should I try two radials? I have the ARRL Antenna Handbook, which I find a little too theoretical, but helpful anyway. Thanks! ~~Rhona
------------------------------------ Yahoo! Groups Links
|
Re: 40-meter stealth vertical for balcony
Wonder how the vertical experiments are going and if you all are enjoying the summer time late night band openings?
I came across this bookmark, and I thought I'd pass it along. This www site contains interesting data about experiements with radials for vertical configurations.
73, Deon
toggle quoted message
Show quoted text
--- In QRPops@..., "capesafari" <ft7800@...> wrote: Rhona
Im using the 33ft MFJ pole - (HRO stock) but they all work the same. Choose fibreglass over Graphite composites - which can couple to the wire, and will affect the efficiency.
If you can run elevated at an angle, probably best, but at the end it's all a compromise. Just a matter of what works best in your situation. Remember any length if wire you can get in the air outside, is probably better than something indoors.
I think the antenna modeling s/w will help with viewing radiation patterns. I have not done that.
Also think abt experimenting with a small loop design.
I'm fortunate in my location to be on salt-water - so the vertical is a good choice for low angle radiation...
Good luck with the experiments...
73, Deon
--- In QRPops@..., Neil Murphy <neil@> wrote:
Hey Rhona,
I note that eBay has a 31ft Jackite pole for $59 - with shipping it looks like that's the $70 you mention. Seems high, but maybe they've gone up since I bought mine. I have the 28 foot version. If you wrap 33ft of wire around it in a helix, you're all set for 40m. Or you can attach one end of your antenna wire to the tip, let it run along the mast until it's about half way down, wrap ~ 5ft of 'coil' and continue the rest to the base. That will probably put you too low on 40M because it won't take that much coiled wire to lower the rez. freq. -- so you can unwind some of it to get a better match. Make a helix around the mast with any extra wire.
I have thrown this antenna up at AmTech and with one ~25ft radial a few feet off the ground worked TX with 2.5 watts. Two radials at 90 degrees would probably be better... and more just draped from eves, trees, your husband, dog, whatever, will give you something to fuss around with and see what happens. It's all just fun, after all. Have some, Neil
On 7/23/2010 9:14 AM, Rhona Mahony wrote:
Thanks for describing your antenna, Deon. I had been thinking of using 12 awg stranded wire, for a little more bandwidth and to withstand the stresses of frequent extension and recoiling as I telescope the pole up and down. Good to know that even 26 awg solid wire works fine. Do you have the Jackite pole ($70, tip 3/16 inches) or the Mast Company ($115, tip 5/16 inches) or something else? Comments on what you have? Does a vertical with one elevated radial really have a pronounced null? Where is it? If my angle of separation for 2 radials would be less than 90 degrees, should I try two radials? I have the ARRL Antenna Handbook, which I find a little too theoretical, but helpful anyway. Thanks! ~~Rhona
|
Re: 40-meter stealth vertical for balcony
Rhona
Im using the 33ft MFJ pole - (HRO stock) but they all work the same. Choose fibreglass over Graphite composites - which can couple to the wire, and will affect the efficiency.
If you can run elevated at an angle, probably best, but at the end it's all a compromise. Just a matter of what works best in your situation. Remember any length if wire you can get in the air outside, is probably better than something indoors.
I think the antenna modeling s/w will help with viewing radiation patterns. I have not done that.
Also think abt experimenting with a small loop design.
I'm fortunate in my location to be on salt-water - so the vertical is a good choice for low angle radiation...
Good luck with the experiments...
73, Deon
toggle quoted message
Show quoted text
--- In QRPops@..., Neil Murphy <neil@...> wrote: Hey Rhona,
I note that eBay has a 31ft Jackite pole for $59 - with shipping it looks like that's the $70 you mention. Seems high, but maybe they've gone up since I bought mine. I have the 28 foot version. If you wrap 33ft of wire around it in a helix, you're all set for 40m. Or you can attach one end of your antenna wire to the tip, let it run along the mast until it's about half way down, wrap ~ 5ft of 'coil' and continue the rest to the base. That will probably put you too low on 40M because it won't take that much coiled wire to lower the rez. freq. -- so you can unwind some of it to get a better match. Make a helix around the mast with any extra wire.
I have thrown this antenna up at AmTech and with one ~25ft radial a few feet off the ground worked TX with 2.5 watts. Two radials at 90 degrees would probably be better... and more just draped from eves, trees, your husband, dog, whatever, will give you something to fuss around with and see what happens. It's all just fun, after all. Have some, Neil
On 7/23/2010 9:14 AM, Rhona Mahony wrote:
Thanks for describing your antenna, Deon. I had been thinking of using 12 awg stranded wire, for a little more bandwidth and to withstand the stresses of frequent extension and recoiling as I telescope the pole up and down. Good to know that even 26 awg solid wire works fine. Do you have the Jackite pole ($70, tip 3/16 inches) or the Mast Company ($115, tip 5/16 inches) or something else? Comments on what you have? Does a vertical with one elevated radial really have a pronounced null? Where is it? If my angle of separation for 2 radials would be less than 90 degrees, should I try two radials? I have the ARRL Antenna Handbook, which I find a little too theoretical, but helpful anyway. Thanks! ~~Rhona
|
Re: 40-meter stealth vertical for balcony
Hey Rhona,
I note that eBay has a 31ft Jackite pole for $59 - with shipping it
looks like that's the $70 you mention. Seems high, but maybe they've
gone up since I bought mine. I have the 28 foot version. If you wrap
33ft of wire around it in a helix, you're all set for 40m. Or you can
attach one end of your antenna wire to the tip, let it run along the
mast until it's about half way down, wrap ~ 5ft of 'coil' and continue
the rest to the base. That will probably put you too low on 40M because
it won't take that much coiled wire to lower the rez. freq. -- so you
can unwind some of it to get a better match. Make a helix around the
mast with any extra wire.
I have thrown this antenna up at AmTech and with one ~25ft radial a few
feet off the ground worked TX with 2.5 watts. Two radials at 90 degrees
would probably be better... and more just draped from eves, trees, your
husband, dog, whatever, will give you something to fuss around with and
see what happens. It's all just fun, after all.? Have some, Neil
On 7/23/2010 9:14 AM, Rhona Mahony wrote:
toggle quoted message
Show quoted text
?
Thanks for describing your antenna, Deon.
I had been thinking of using 12 awg stranded wire, for a little more
bandwidth and to withstand the stresses of frequent extension and
recoiling as I telescope the pole up and down. Good to know that even
26 awg solid wire works fine.
Do you have the Jackite pole ($70, tip 3/16 inches) or the Mast Company
($115, tip 5/16 inches) or something else? Comments on what you have?
Does a vertical with one elevated radial really have a pronounced null?
Where is it?
If my angle of separation for 2 radials would be less than 90 degrees,
should I try two radials?
I have the ARRL Antenna Handbook, which I find a little too
theoretical, but helpful anyway.
Thanks!
~~Rhona
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Re: 40-meter stealth vertical for balcony
Thanks for describing your antenna, Deon. I had been thinking of using 12 awg stranded wire, for a little more bandwidth and to withstand the stresses of frequent extension and recoiling as I telescope the pole up and down. Good to know that even 26 awg solid wire works fine. Do you have the Jackite pole ($70, tip 3/16 inches) or the Mast Company ($115, tip 5/16 inches) or something else? Comments on what you have? Does a vertical with one elevated radial really have a pronounced null? Where is it? If my angle of separation for 2 radials would be less than 90 degrees, should I try two radials? I have the ARRL Antenna Handbook, which I find a little too theoretical, but helpful anyway. Thanks! ~~Rhona
-- Rhona Mahony rmahony@...
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----- Original Message ----- From: capesafari <ft7800@...> To: QRPops@... Sent: Thu, 22 Jul 2010 23:50:49 -0700 (PDT) Subject: [QRPops] Re: 40-meter stealth vertical for balcony Rhona You're not alone with the CA restrictions. (You'll be able to find a lot of info about this topic on the net too) I can add my experience, working lots of dx, at QRPp levels. (using mostly cw/digital modes/qrp). My home setup uses exactly this method, due to CC&Rs. The base of the 33ft pole is on the first story balcony for a little elevation. I push it up when I operate, and it collapses down and out-of-sight when not used. Wire thickness depends on your required bandwidth, but it does'nt matter much when you're using an antenna tuner. I use 26 swg mag wire - which is mostly invisible - 100W no problem. With this configuration I can work 40 - 10. The counterpoise situation depends on the design - and in the case of a quaterwave vertical, with elevated radials, you should easily get away with only 2x, sloping down to the ground. It's certainly not ideal and radiation angle may suffer, but it's worth the try to see what you get. To test the radiation efficiency, I sometimes use wspr for far-field radiation and propagation tests. Here's an interesting radial write-up : Also an interesting telescopic pole read here: Hope your experiments work out great and that you get on-air from home soon! 73, Deon k6wh --- In QRPops@..., Rhona Mahony <rmahony@...> wrote: Hi there gentlepersons, This month's QST has an article (p. 44) on a 160-meter stealth vertical antenna that made me think that I could easily erect a similar one for 40 meters on my balcony. By telescoping it up only at night, I could evade my condo association's aesthetic restrictions. Because I won't be carrying this antenna, I am freer in my choice of wire diameter. What diameter do you folks like to use for home verticals and the radial(s)? My back patio is so narrow that if I use 2 radials, their angle of separation will be less than 90 degrees. Should I just use one radial? It will slope downward from the 12-foot high balcony to whatever I stake it to. Any tips? It will be great to have an antenna at home :^) ~~Rhona
-- Rhona Mahony rmahony@...
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Re: 40-meter stealth vertical for balcony
Rhona
You're not alone with the CA restrictions. (You'll be able to find a lot of info about this topic on the net too)
I can add my experience, working lots of dx, at QRPp levels. (using mostly cw/digital modes/qrp).
My home setup uses exactly this method, due to CC&Rs. The base of the 33ft pole is on the first story balcony for a little elevation. I push it up when I operate, and it collapses down and out-of-sight when not used.
Wire thickness depends on your required bandwidth, but it does'nt matter much when you're using an antenna tuner. I use 26 swg mag wire - which is mostly invisible - 100W no problem.
With this configuration I can work 40 - 10. The counterpoise situation depends on the design - and in the case of a quaterwave vertical, with elevated radials, you should easily get away with only 2x, sloping down to the ground. It's certainly not ideal and radiation angle may suffer, but it's worth the try to see what you get. To test the radiation efficiency, I sometimes use wspr for far-field radiation and propagation tests.
Here's an interesting radial write-up :
Also an interesting telescopic pole read here:
Hope your experiments work out great and that you get on-air from home soon!
73, Deon k6wh
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--- In QRPops@..., Rhona Mahony <rmahony@...> wrote: Hi there gentlepersons, This month's QST has an article (p. 44) on a 160-meter stealth vertical antenna that made me think that I could easily erect a similar one for 40 meters on my balcony. By telescoping it up only at night, I could evade my condo association's aesthetic restrictions. Because I won't be carrying this antenna, I am freer in my choice of wire diameter. What diameter do you folks like to use for home verticals and the radial(s)? My back patio is so narrow that if I use 2 radials, their angle of separation will be less than 90 degrees. Should I just use one radial? It will slope downward from the 12-foot high balcony to whatever I stake it to. Any tips? It will be great to have an antenna at home :^) ~~Rhona
-- Rhona Mahony rmahony@...
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40-meter stealth vertical for balcony
Hi there gentlepersons, This month's QST has an article (p. 44) on a 160-meter stealth vertical antenna that made me think that I could easily erect a similar one for 40 meters on my balcony. By telescoping it up only at night, I could evade my condo association's aesthetic restrictions. Because I won't be carrying this antenna, I am freer in my choice of wire diameter. What diameter do you folks like to use for home verticals and the radial(s)? My back patio is so narrow that if I use 2 radials, their angle of separation will be less than 90 degrees. Should I just use one radial? It will slope downward from the 12-foot high balcony to whatever I stake it to. Any tips? It will be great to have an antenna at home :^) ~~Rhona
-- Rhona Mahony rmahony@...
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Re: Fw: MB Antenna NEC File
Now I see why modeling software is so useful if the theoretical and actual are so close--but different from expected. Great tool to have and to learn.
Dave w6dlf
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--- In QRPops@..., David W Crocker <dwcae@...> wrote: Here is Martin's response to my request for NEC file for modeling his antenna using 4NEC2.
Dave W6VYC
----- Forwarded Message ---- From: Martin Hedman <sm0dtk@...> To: dwcae@... Sent: Mon, July 12, 2010 8:07:05 PM Subject: Re: MB Antenna NEC File
Hello Dave! Glad to see that you enjoyed my article in QST and that you have build a 20 meter version of the antenna. Please see attached nec-file for 21 MHz. I have used a thin insulated wire which is light and strong but puts my resonance frequency 6 procent in difference when modelling and in real. So when modelling the included file you will se that it resonance on 22.6 MHz but in real with my wire used it resonance on 21.2 MHz. So resonance QRG depends on what kind of wire you use. I have built many versions of the antenna but never needed some kind of balun. At the moment I have one MH-antenna for 21 MHz and one for 18 MHz and they works nice with SWR 1,0 and good bandwidth. Good luck with your project! 73 de Martin
<-----Ursprungligt Meddelande----->
From: David W Crocker [dwcae@...] Sent: 13/7/2010 4:31:07 AM To: sm0dtk@... Cc: neil@... Subject: MB Antenna NEC File
Martin,
Really enjoyed reading your article in the Mar. issue of QST, also your great WEBsite. A friend put together a 20M version of your MB Antenna which we got running but it needs some work as the resonance is too high and the SWR bandwidth isn't very good. But we did manage to work SK9HQ during the recent IARU contest with only 10 watts (ICOM703).
Can you send a copy of your NEC file so I can analyze the antenna using 4NEC2. Also do you think a balun might help?
73, Dave W6VYC
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Nick,
Beautiful pictures. Thanks for sharing Ren William with us. And congratulations to all of you.
73, Dave W6DLF
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--- In QRPops@..., Nick Garner <nwgarner@...> wrote: Howdy Folks, Ren William Garner was born this past Sunday at 0349. He was 7 lbs. 1 oz and 19.5 inches. He and mom are doing fine and I'm sleepy. :)
I've uploaded a couple pictures to the group website.
I just saw those pictures of that beam, pretty neat use of the poles.
Also, if anyone has an Android based phone, I've created HamLog for that platform too. It's still a work in progress though. Let me know if you want a free copy.
73, Nick N3WG
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That's wonderful Nick.......wishing you guys the best!?
Tim
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--- On Thu, 7/15/10, Nick Garner wrote: From: Nick Garner Subject: [QRPops] N3WG Version 2.0 To: "qrpops" Date: Thursday, July 15, 2010, 12:36 PM
?
Howdy Folks, Ren William Garner was born this past Sunday at 0349.? He was 7 lbs. 1 oz and 19.5 inches.? He and mom are doing fine and I'm sleepy. :)
I've uploaded a couple pictures to the group website.
I just saw those pictures of that beam, pretty neat use of the poles.
Also, if anyone has an Android based phone, I've created HamLog for that platform too.? It's still a work in progress though.? Let me know if you want a free copy.
73, Nick N3WG
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Here is Martin's response to my request for NEC file for modeling his antenna using 4NEC2.
Dave W6VYC
----- Forwarded Message ----
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From: Martin Hedman To: dwcae@... Sent: Mon, July 12, 2010 8:07:05 PM Subject: Re: MB Antenna NEC File
Hello Dave! Glad to see that you enjoyed my article in QST and that you have build a 20 meter version of the antenna. Please see attached nec-file for 21 MHz. I have used a thin insulated wire which is light and strong but puts my resonance frequency 6 procent in difference when modelling and in real. So when modelling the included file you will se that it resonance on 22.6 MHz but in real with my wire used it resonance on 21.2 MHz. So resonance QRG depends on what kind of wire you use. I have built many versions of the antenna but never needed some kind of balun. At the moment I have one MH-antenna for 21 MHz and one for 18 MHz and they works nice with SWR 1,0 and good bandwidth. Good luck with your project! 73 de Martin
<-----Ursprungligt Meddelande----->
? | ? | From: David W Crocker [dwcae@...]
Sent: 13/7/2010 4:31:07 AM
To: sm0dtk@...
Cc: neil@...
Subject: MB Antenna NEC File?
Martin,
Really enjoyed reading your article in the Mar. issue of QST, also your great WEBsite. A friend put together a 20M version of your MB Antenna which we got running but it needs some work as the resonance is too high and the SWR bandwidth isn't very good. But we did manage to work SK9HQ during the recent IARU contest with only 10 watts (ICOM703).
Can you send a copy of your NEC file so I can analyze the antenna using 4NEC2. Also do you think a balun might help?
73,? Dave W6VYC
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