Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara
That's why it's called NPS, nominal pipe size.? None of the pipe size names match the actual ID.? It's a national standard.? In fact there are multiple standards, ASME, API, ANSI. This is a dumb conversation.
On June 3, 2024 12:03:37 PM PDT, Paul AA6PZ <aa6pz@...> wrote:
It¡¯s not that simple.
For example,three varieties of PVC are commonly used for sprinkler systems. None have an ID of 0.500". So if the dimensions are important, it is necessary to check the tables.?
|
OD
|
ID
|
Schedule 80
|
.840
|
.562
|
Schedule 40
|
.840
|
.602
|
1120
|
.840
|
.716
|
BTW, Schedule 40 is
most commonly used for long runs and schedule 80 for the risers.
1120 should only be used if you are really cheap, because it is very
easily broken.
On Monday, June 3, 2024 at 10:55:04 AM PDT, Cliff Sojourner K6CLS via groups.io <cls@...> wrote:
Paul, pipe is measured by inside diameter; tubing is by outside diameter. On June 3, 2024 9:59:24 AM PDT, Paul AA6PZ <aa6pz@...> wrote:
If you want STURDY, get galvanized water pipe.? Pluming supply stores have it in 20 ft lengths.? But the thicker walls make it much heavier than EMT.??
I'm sure EMT would more than adequate for 2 meters.? For 20 meters you would want to be careful in how you stand it? up.? Once up and properly guyed, it should be fine.
BTW, the "trade sizes" of pipes do not match the dimensions on my ruler. ?1 1/2 inch pipe has OD of 1.9"
?2 inch pipe has OD of 2.37"
My best guess is that pipe sizes were originally developed in the 1800's.? Over time, improved manufacturing processes and materials allowed for thinner walls, but the OD's were kept the same so existing fittings would be compatible.? Anyway, the ID of current pipes is "similar" to the trade size.? But if the dimensions are important, check with a table of the dimensions.
BTW, I have a tri-band beam on a mast of water pipe.? It was installed years ago.?
On Sunday, June 2, 2024 at 11:15:21 PM PDT, Christopher AI6KG <ch@...> wrote:
The rigidity of tubing?depends on the product of wall thickness and the cube of the diameter.? ? The strength depends on the product of the wall thickness and the square of the diameter.
?? 2"? tubing of reasonable wall thickness will work for a lot of things.? ? ?But of course do your own calcs.? ??
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG < ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
It¡¯s not that simple.
For example,three varieties of PVC are commonly used for sprinkler systems. None have an ID of 0.500". So if the dimensions are important, it is necessary to check the tables.?
|
OD
|
ID
|
Schedule 80
|
.840
|
.562
|
Schedule 40
|
.840
|
.602
|
1120
|
.840
|
.716
|
BTW, Schedule 40 is
most commonly used for long runs and schedule 80 for the risers.
1120 should only be used if you are really cheap, because it is very
easily broken.
On Monday, June 3, 2024 at 10:55:04 AM PDT, Cliff Sojourner K6CLS via groups.io <cls@...> wrote:
Paul, pipe is measured by inside diameter; tubing is by outside diameter.
On June 3, 2024 9:59:24 AM PDT, Paul AA6PZ <aa6pz@...> wrote:
If you want STURDY, get galvanized water pipe.? Pluming supply stores have it in 20 ft lengths.? But the thicker walls make it much heavier than EMT.??
I'm sure EMT would more than adequate for 2 meters.? For 20 meters you would want to be careful in how you stand it? up.? Once up and properly guyed, it should be fine.
BTW, the "trade sizes" of pipes do not match the dimensions on my ruler. ?1 1/2 inch pipe has OD of 1.9"
?2 inch pipe has OD of 2.37"
My best guess is that pipe sizes were originally developed in the 1800's.? Over time, improved manufacturing processes and materials allowed for thinner walls, but the OD's were kept the same so existing fittings would be compatible.? Anyway, the ID of current pipes is "similar" to the trade size.? But if the dimensions are important, check with a table of the dimensions.
BTW, I have a tri-band beam on a mast of water pipe.? It was installed years ago.?
On Sunday, June 2, 2024 at 11:15:21 PM PDT, Christopher AI6KG <ch@...> wrote:
The rigidity of tubing?depends on the product of wall thickness and the cube of the diameter.? ? The strength depends on the product of the wall thickness and the square of the diameter.
?? 2"? tubing of reasonable wall thickness will work for a lot of things.? ? ?But of course do your own calcs.? ??
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG < ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
Paul, pipe is measured by inside diameter; tubing is by outside diameter.
On June 3, 2024 9:59:24 AM PDT, Paul AA6PZ <aa6pz@...> wrote:
If you want STURDY, get galvanized water pipe.? Pluming supply stores have it in 20 ft lengths.? But the thicker walls make it much heavier than EMT.??
I'm sure EMT would more than adequate for 2 meters.? For 20 meters you would want to be careful in how you stand it? up.? Once up and properly guyed, it should be fine.
BTW, the "trade sizes" of pipes do not match the dimensions on my ruler. ?1 1/2 inch pipe has OD of 1.9"
?2 inch pipe has OD of 2.37"
My best guess is that pipe sizes were originally developed in the 1800's.? Over time, improved manufacturing processes and materials allowed for thinner walls, but the OD's were kept the same so existing fittings would be compatible.? Anyway, the ID of current pipes is "similar" to the trade size.? But if the dimensions are important, check with a table of the dimensions.
BTW, I have a tri-band beam on a mast of water pipe.? It was installed years ago.?
On Sunday, June 2, 2024 at 11:15:21 PM PDT, Christopher AI6KG <ch@...> wrote:
The rigidity of tubing?depends on the product of wall thickness and the cube of the diameter.? ? The strength depends on the product of the wall thickness and the square of the diameter.
?? 2"? tubing of reasonable wall thickness will work for a lot of things.? ? ?But of course do your own calcs.? ??
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG < ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
If you want STURDY, get galvanized water pipe.? Pluming supply stores have it in 20 ft lengths.? But the thicker walls make it much heavier than EMT.??
I'm sure EMT would more than adequate for 2 meters.? For 20 meters you would want to be careful in how you stand it? up.? Once up and properly guyed, it should be fine.
BTW, the "trade sizes" of pipes do not match the dimensions on my ruler. ?1 1/2 inch pipe has OD of 1.9"
?2 inch pipe has OD of 2.37"
My best guess is that pipe sizes were originally developed in the 1800's.? Over time, improved manufacturing processes and materials allowed for thinner walls, but the OD's were kept the same so existing fittings would be compatible.? Anyway, the ID of current pipes is "similar" to the trade size.? But if the dimensions are important, check with a table of the dimensions.
BTW, I have a tri-band beam on a mast of water pipe.? It was installed years ago.?
On Sunday, June 2, 2024 at 11:15:21 PM PDT, Christopher AI6KG <ch@...> wrote:
The rigidity of tubing?depends on the product of wall thickness and the cube of the diameter.? ? The strength depends on the product of the wall thickness and the square of the diameter.
?? 2"? tubing of reasonable wall thickness will work for a lot of things.? ? ?But of course do your own calcs.? ??
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG < ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
The rigidity of tubing?depends on the product of wall thickness and the cube of the diameter.? ? The strength depends on the product of the wall thickness and the square of the diameter.
?? 2"? tubing of reasonable wall thickness will work for a lot of things.? ? ?But of course do your own calcs.? ??
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG < ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
Yes.
Connie Stillinger
650-380-2018
On Sunday, June 2nd, 2024 at 10:54 PM, Joy Rabins <doghouse3@...> wrote:
Connie, Does it have 10 foot sections?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
Connie, Does it have 10 foot sections?
Joy
N6GO
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
Joy, if you want an actual steel antenna mast for free, hit me up.
On Sun, Jun 2, 2024 at 21:06, Cliff Sojourner K6CLS via groups.io < cls@...> wrote: I agree, I would not use EMT for anything but as electrical conduit. But, Chris suggested 2", maybe that's pretty sturdy.
I've used 1.25" IMC for 10 foot support pole. IMC is available at hardware stores.
RMC is heavier wall, but is harder to find retail. I know hams that have used it for antenna poles, but it seems like overkill because I found IMC sufficient.
Cliff K6CLS CM87
On June 2, 2024 8:47:24 PM PDT, Paul AA6PZ <aa6pz@...> wrote:
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG <ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
I agree, I would not use EMT for anything but as electrical conduit.?? But, Chris suggested 2", maybe that's pretty sturdy.
I've used 1.25" IMC for 10 foot support pole.? IMC is available at hardware stores.
RMC is heavier wall, but is harder to find retail.? I know hams that have used it for antenna poles, but it seems like overkill because I found IMC sufficient.
Cliff K6CLS CM87
On June 2, 2024 8:47:24 PM PDT, Paul AA6PZ <aa6pz@...> wrote:
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG <ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box. On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
Be aware that EMT is not really strong as some other metal pipes. Electricians routinely bend it to fit installations.?
On Sunday, June 2, 2024 at 06:51:15 PM PDT, Christopher AI6KG <ch@...> wrote:
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box.
On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
if you only need to go up 10' (vs needing swaged sections to go up higher), standard galvanized EMT conduit works pretty well.? ? ?? 2" x 10' is ~ $45 at the big box.
On Sun, Jun 2, 2024 at 6:05?PM Connie W6EFI via <stillinger= [email protected]> wrote:
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Re: Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
I have three sections of steel antenna mast, swaged so that they fit together, and powder coated. Somebody gave them to me and I am not going to use them anytime in the next five or 10 years. ? would you like them, Joy?
On Sun, Jun 2, 2024 at 17:59, Joy Rabins < doghouse3@...> wrote: We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
--
Connie KN2EFI
|
Where can I find a 10 ft galvanized steel mast pole in the Sunnyvale/Santa Clara area
We are taking our first baby steps for putting up a hex beam. We have a push up mast but we need a support pole about 10 ft tall. Does anyone have any suggestions of where to get one in the Santa Clara, Sunnyvale, San Jose area??
I will probably be asking more questions, so "Please Stand By".?
Joy
N6GO
|
I plan to be at the Baylands for lunch and ops tomorrow.
I will bring my renegade Zachtek.
|
Re: Zachtek not transmitting
Hi Howard,
Do you hear the relays clicking on your zachtek? ?That would tell you if the microprocessor is still controlling outputs. ?If the relays are clicking, then it could be that any of the TCXO, Si5351 frequency synthesizer chip, or 0.3W amplifier chip has gone bad. ?To determine that, one would need to use a 'scope.
73, Ron, n6ywu
|
Dave, did you ask your doctor for a cough suppressant? As you know, sleep is VERY important. I often wake in the middle of the night because of back pain so I know what you are going through. The best night's sleep I had gotten in months was when I had two margaritas with dinner one night. ?My doctor frowned on that solution so I am now "margarita free" as a sleep aid.
I have never tried these but my doctor suggested it once, ? Mucinex Dm 12 Hour Expectorant & Cough Suppressant Tablets.?
If you use My Health or My Chart with your doctor and just send him/her a message asking for something to help you sleep. If they don't respond let me know and I'll bring my 1/2 full bottle of Jose Cuervo Ready to Drink Margarita mix. I recommend the "Ready to Drink" Margarita mix because it's hard for me to do math in the middle of the night to figure out how much toquilla to put in regular Margarita mix.?
Joy
N6GO
|
I will be at the Baylands starting with lunch. Hope to see many of you.
Hiroki AH6CY
|
Re: Zachtek not transmitting
Howard,
I assume you have checked the LEDs to see what it is doing. The yellow one flashes every second when the GPS signal is locked, and the red will be on when it is transmitting. Also, you can us the App on your PC and see what it thinks it is doing. Bring it down to the Baylands this Friday. I will bring a spectrum analyzer and wattmeter so we can see what coming out of the Tx. If you have a QRP wattmeter, try and measure the RF into a dummy load.
You can also listen to it on your 7300 and try to decode the signal using WSJTx. You may have to use some attenuation on the 7300 to keep it from overloading.
Dave W6VYC
On Thursday, May 23, 2024 at 05:45:39 PM PDT, HOWARD POMERANTZ <howpom@...> wrote:
Hello All,
My Zachtek has stopped transmitting. I have watched it on the config app and it goes through the right bands but it appears that nothing is getting out of the box.?
Any ideas?
|
Joy,
Thanks for your kind offer. I am physically functional, so I have been able to get out once and a while in the afternoon. My challenge is finding a way to get a good night's sleep. Sometimes I try sleeping a recliner chair in the living room and then sometimes I get up in the middle of the night try sleeping in bed. Once I lie down, I start coughing which keeps me awake. I am taking Delsym and Zyrtec which help.
Good stuff from your visit to the QRP convention.
I hope to get down to the Baylands this Friday.....Dave
On Thursday, May 23, 2024 at 04:34:20 PM PDT, Joy Rabins <doghouse3@...> wrote:
Dave, if you need a run to the drug store or grocery store just let me know. My schedule is pretty flexible. Take care.?
Joy
N6GO
|
Please update this post if you happen to notice that LoTW is up and working.
If you happen to notice that ARRL's LoTW is working will you please update this post so we will all know?
Thanks, Joy
N6GO
|
Cliff Sojourner K6CLS
David W Crocker