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Re: License testing tonight
Good luck. Bob.
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73
Ralph Howard
WD6BGN
From: main@CMRA.groups.io <main@CMRA.groups.io> on behalf of Boback <RNAckerman@...>
Sent: Tuesday, March 21, 2023 8:53:46 AM To: main@CMRA.groups.io <main@CMRA.groups.io> Subject: Re: [CMRA] License testing tonight I will be there to test. Bob, N6VZO On 3/21/2023 8:48 AM, Jon Cole via groups.io wrote:
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Re: License testing tonight
I will be there to test. Bob, N6VZO On 3/21/2023 8:48 AM, Jon Cole via
groups.io wrote:
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Re: License testing tonight
Jon Cole
Hi Fred, Thank you. This month's VE testing session will be at Lenoir Woods Community Center at 6:30 PM, as usual. Please use the west entrance facing Highway 63. I have at least one examinee who will be there tonight. Jon Cole, N0OFJ VE Liaison Central Missouri Radio Association
On Tuesday, March 21, 2023 at 08:27:03 AM CDT, Fred Dittrich <fdittric@...> wrote:
Jon I'll be there for testing tonight. 73 Fred AE0FD |
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License testing tonight
Fred Dittrich
Jon
I'll be there for testing tonight. 73 Fred AE0FD |
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Re: FYI, EMP and CME protection for your QTH
Brad Wilmot
You're right. Most breakers are thermal, with some larger ones being both thermal and magnetic. While a large surge/spike can trip a breaker, it's usually because something downstream shorted out, not by the surge itself. The pulse width is so short (microseconds), a breaker simply doesn't have time to react (even an overloaded breaker will take seconds to minutes to trip). Same principal with small conductors to the SPD. Yes, they're small, but the spike width is so short that the wire won't even get warm while shunting a spike to ground.
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Brad Wilmot Building Systems Engineer University Place Apartments W0VHA -----Original Message-----
From: main@CMRA.groups.io <main@CMRA.groups.io> On Behalf Of Gary Vaught - W9TIG Sent: Monday, March 20, 2023 9:29 AM To: main@CMRA.groups.io Subject: Re: [CMRA] FYI, EMP and CME protection for your QTH It's been a lot of years since I worked as an electrician and technology may have changed, but my understanding of breakers has been that they're essentially thermal devices that are designed to open, or trip, when to much current is drawn, or pushed, through them and hearing up the trip mechanism. As fast as that happens, it still takes time to occur. That few milliseconds is where the threat comes into play. I need to watch the whole video but my concern is on his affinity for 10ga wire. If the surge had the potential to be over 300 volts and requires a 100kA sink, I don't see the 10ga wire laying much longer than 12 or 14 ga. But I could be totally wrong about all of it and will happily defer to correction from Earnest, Chris, or anyone with better info. -- 73 W9TIG Gary Vaught |
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Re: FYI, EMP and CME protection for your QTH
Gary Vaught - W9TIG
It's been a lot of years since I worked as an electrician and technology may have changed, but my understanding of breakers has been that they're essentially thermal devices that are designed to open, or trip, when to much current is drawn, or pushed, through them and hearing up the trip mechanism. As fast as that happens, it still takes time to occur. That few milliseconds is where the threat comes into play. I need to watch the whole video but my concern is on his affinity for 10ga wire. If the surge had the potential to be over 300 volts and requires a 100kA sink, I don't see the 10ga wire laying much longer than 12 or 14 ga.
But I could be totally wrong about all of it and will happily defer to correction from Earnest, Chris, or anyone with better info. -- 73 W9TIG Gary Vaught |
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Re: FYI, EMP and CME protection for your QTH
paul watt
Interesting thought Fred. Without the specialized knowledge of being an EE or electrician I can only assume the pulse itself would trigger the main breaker and the spd would pickup anything that may have surged thru. Again I am no expert. I am just making a logical assumption based on how this thing wires into the box. I will send this query onto my step-dad who is an EE and see what he says. Stay tuned (bad ham joke 😸) 73 Paul KE0IKG On Mar 19, 2023 06:18, Fred Dittrich <fdittric@...> wrote:
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Re: FYI, EMP and CME protection for your QTH
Fred Dittrich
Paul
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After having slept on this I have a question. How is this going to trip your 200A breaker through a double 20A or 30A breaker????? I understand the carefully selected and adjusted ferrite beads to avoid saturation. Would one of our retired EE's please comment? 73 Fred AE0FD At 09:30 PM 3/18/2023, you wrote: Great info!! Thanks Fred |
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Re: FYI, EMP and CME protection for your QTH
paul watt
Great info!! Thanks Fred 73 Paul KE0IKG On Mar 18, 2023 19:26, Fred Dittrich <fdittric@...> wrote:
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FYI, EMP and CME protection for your QTH
Fred Dittrich
Hi
Check this out: https://www.youtube.com/watch?v=bPSTFe1dBAg 3-steps to Whole-House EMP Protection 73 Fred AE0FD |
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CMRA Meeting Minutes
John W. Smith
Thanks to Bob, N6VZO, for his speedy effort, I've posted the minutes from the March meeting the other evening at https://k0si.net/cmra-meeting-minutes/ . February's minutes have been slightly updated, per discussion at the meeting, and the link for February now goes to the corrected edition.
73, John, KC0HSB -- This message came to you from John Wesley Smith kc0hsb@... Tell your blind & visually impaired friends about the Circle of Love. https://circleofloveministry.com Find musings of an eclectic pilgrim at https://johnwesleysmith.com |
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K0SI-10 down
Bill McFarland - N0AXZ
Group, I have made three trips to the ECC today thinking each time I have fixed the problem with K0SI-10, and its USB cable to TNC problem. It works for a while after my visit then loses it again. So please standby, tomorrow I will substitute the cable and see. Bill N0AXZ |
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LCTOTA sign ups
Bill McFarland - N0AXZ
See list below for the participants that I have recorded. I may have left you out, or now you can't make it, so let me know if the list needs adjustments. We have plenty of time before the event (6/3-18) but I have some material to share with the working group from the event organizers.
Bill N0AXZ |
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Re: Winlink Story - 2
Michael J. Hauan
Count me in, please!
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Michael/AC0G
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Winlink Story - 2
Bill McFarland - N0AXZ
Winlink Story – Exercise
Group of Winlink users:
Have a little fun exercising your Winlink capabilities by participating in this month’s Winlink exercise. We (you) will help write a story by adding a line (LIMIT IT TO LESS THAN 140 CHARACTERS) to the received email and forwarding it on to the next person on the list.
For example, you will receive a message on Winlink that has a list of call signs of the participating group in a column on the left, and a story developing from that which will look like:
(Players on the list at this time) N0AXZ – Once upon a time in a faraway ether-space there was an amateur radio operator who KC0EZE K0PHP WD6BGN W0ZH W0TES K0JHL N6VZO KF0FZV K0MIZ
This message would be received by KC0EZE and he would add a line to the story and forward the message to K0PHP. K0PHP would add a line and forward it to WD6BGN, etc. etc. etc.…
The last person on the list will add the ending and forward that back to me. I will then send the story out to all you who participated to see what kind of Winlink story we produced. This is without the use of any Artificial Intelligence - AI! Just use Winlink to read the mail, add your line, and forward to another ham.
I will ask you not to use any political, religious, or otherwise objectionable prose.
After you have read your incoming mail, click on the Forward button, enter the next ham call sign from the list in the To: field and then you can add your prose to the story. WHEN YOU FORWARD YOUR MESSAGE TO THE NEXT HAM ON THE LIST, ALSO CC: N0AXZ, SO THAT I CAN SEE IF THE CHAIN MIGHT HAVE BROKEN AND RESTART IT.
If I start this on Wednesday afternoon, depending on how many players we get, we may have it completed by Thursday PM. I will need a list of players by Wednesday (3/15) afternoon and we will be ready to go. I’ll email the playing group when I start the story so you can then be looking for a Winlink email coming your way.
You will have to connect to your favorite Winlink Node to see if you have mail waiting, and until you do get email you are in the waiting stage. Keep checking until you get the message, then add your line and forward it to the next on the list. I will publish the group and order when I get all the volunteers on CMRA email, and you can see if you will be early or later on the list.
So, if you are interested in using Winlink in this creative project, send me an email and stand by. IF YOUR CALLSIGN IS ON THE ABOVE LIST, BUT YOU CAN’T PLAY NOW, PLEASE LET ME KNOW, SO I CAN REMOVE YOU FROM THE CHAIN. Bill N0AXZ |
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Re: K0SI-10 down?
Fred Dittrich
Bill
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Thanks ! 73 Fred AE0FD At 08:17 AM 3/14/2023, you wrote: OK Fred, |
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Re: K0SI-10 down?
Bill McFarland - N0AXZ
OK Fred, I had to reboot it and it is now working. bill On Tue, Mar 14, 2023 at 7:56 AM Fred Dittrich <fdittric@...> wrote: Hi --
Bill N0AXZ |
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K0SI-10 down?
Fred Dittrich
Hi
It says: *** Starting to call K0SI-10 *** Opening serial port COM3; 9600 baud; Kantronics *** Connecting to K0SI-10 *** CONNECTED TO K0SI-10 *** Forced disconnect <==== This is me hitting the Stop button 73 Fred AE0FD |
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Radio For Sale
Any new HAMs out there looking for a HF radio? I have an ICOM IC-718 with a MFJ-939 automatic tuner. Both about a year old, works great.
Radio includes original hand mic, power cord, manual, and quick reference book. Tuner connect to the radio and is powered by the radio. Radio and tuner for $500. Perfect for putting up an end feed antenna. Bob Ackerman, N6VZO, 573-514-1425 |
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Re: Winlink Story
Sounds like fun.
Snoopy, "It was a dark and stormy night. A woman screams, and a Pirate Ship Appears in the gloom"...
73
Ralph Howard
WD6BGN
From: main@CMRA.groups.io <main@CMRA.groups.io> on behalf of Bill McFarland - N0AXZ <billmcfarland10@...>
Sent: Thursday, March 9, 2023 3:20:59 PM To: cmra@groups.io <cmra@groups.io> Subject: [CMRA] Winlink Story Winlink Story – Exercise
Group of Winlink users:
Have a little fun exercising your Winlink capabilities by participating in this month’s Winlink exercise. We (you) will help write a story by adding a line to the received email and forwarding it on to the next person on the list.
For example, you will receive a message on Winlink that has a list of call signs of the participating group in a column on the left, and a story developing from that which will look like:
N0AXZ – Once upon a time in a faraway ether-space there was an amateur radio operator who KC0EZE K0PHP K0MIZ . . . . . . This message would be received by KC0EZE and he would add a line to the story and forward the message to K0PHP. K0PHP would add a line and forward it to K0MIZ, etc. etc. etc.…
The last person on the list will add the ending and forward that back to me. I will then send the story out to all you who participated to see what kind of Winlink story we produce. This is without the use of any Artificial Intelligence - AI! Just use Winlink to read the mail, add yours and forward to another ham.
I will ask you not to use any political, religious, or otherwise objectionable prose.
If I start this on Wednesday afternoon, depending on how many players we get, we may have it completed by Thursday PM. I will need a list of players by Wednesday (3/15) morning and we will be ready to go.
You will have to connect to your favorite Winlink Node to see if you have mail waiting, and until you do get email you are in the waiting stage. Keep checking until you get the message, then add your line and forward it to the next on the list. I will publish the group and order when I get all the volunteers on CMRA email, and you can see if you will be early or later on the list.
So if you are interested in using Winlink in this creative project, send me an email and stand by. Questions could be accommodated at the CMRA meeting next Tuesday. We had 20 Winlink users for the last SET. How many will we get for this story? Bill N0AXZ
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