Date   

[PCSARComm] Demo: CalFire Air Attack Operations Review "Sand Box Training"

Jef - N5JEF
 



---------- Forwarded message ---------
From: Eric Struble <eric@...>
Date: Fri, Jun 4, 2021 at 10:40 AM
Subject: [PCSARComm] Demo: CalFire Air Attack Operations Review "Sand Box Training"
To: <PCSARComm@groups.io>


For those of you that might be interested in communications... Here is a youTube video from Juan Browne in Grass Valley showing a recent joint agency training exercise in the Auburn area. It's only a simulation but because it involved PCSO, we could possible get involved with this type of operation. It's a good training so see how CalFire actually does aerial fire suppression from a training viewpoint.  

Eric, W7CSD

https://www.youtube.com/watch?v=LiS7SiiiJnA


Happening Now: SFARC Net - 06/03/2021 #cal-notice

sfarc@w6ek.groups.io Calendar <noreply@...>
 

SFARC Net

When:
06/03/2021
7:30pm to 8:30pm
(UTC-07:00) America/Los Angeles

Where:
W6EK Repeater - 145.430 -600, PL162.2

View Event

Description:
Check-in for Club updates from Officers and members, QSTs and more. Everyone is welcome!


Re: Coffee Break Net; Special Request

Alan - W6WN
 

Chris, Much good on you for all you do. You are opening the door to the future of our hobby. I wish we had more people like you in the school system.

I'll be well on my way up to Graeagle for an installation around that time but I'll try to listen in along 80 / 89 before I drop off the Repeater. 


Coffee Break Net; Special Request

Chris - KN6CCC
 

I am a teacher in Sacramento at McClatchy High school and I FINALLY have radio happening in my classroom every day! It's been a long road since this project started in 2019 before covid!

I am hoping I could get a special favor from net control between about 0845 and 0915 tomorrow 6/3, by having net control ask if N6CKM is listening, and if they are would they like to join the net and tell everyone what is going on in our classroom. On my side, I hope to have a student who will have a bit of an announcement for the net, hoping to build student experience and confidence talking on the radio. 

My cell is 916-764-6132 in case this needs  any coordination. 

Thank you in advance!
Chris Taylor
KN6CCC


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Eric - KN6GYX
 

Orion, thank you much you have a great day, you made mine!

Eric-KN6GYX


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Orion - AI6JB
 

Eric,

 

Here is a plan for a 64-1 Unun or transformer that we use for the General License Exam on our 40m End-Fed antennas.  It uses a FT-240 toroid.  It will give you the turns you are asking about.

 

https://w6ek.groups.io/g/sfarc/files/Antennas/Feedlines%20and%20Baluns/64-to-1_xformer.pdf

 

Yes, you need the capacitor to make 10 meters work. 

 

 

73

Orion, AI6JB

 

 

 

From: sfarc@w6ek.groups.io <sfarc@w6ek.groups.io> On Behalf Of Eric - KN6GYX via groups.io
Sent: Tuesday, June 01, 2021 23:16
To: Eric Kiseda <kisedaconstruction@...>; sfarc@w6ek.groups.io
Subject: Re: [from W6EK Groups.io] File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

 

Is the photo I uploaded the proper way to make the 64:1 unun and do I need to install the capacitor for the EFHW?  


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Eric - KN6GYX
 

Is the photo I uploaded the proper way to make the 64:1 unun and do I need to install the capacitor for the EFHW?  


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Eric - KN6GYX
 

Hello folks, thanks for the input on antenna. I made the 49:1 because that was the only one that had a diagram and a formula for in PDF file. I have one ft-240 to use to make the 64:1 and #14 wire just need the number of primary wraps if two wires need to be twisted together for ground and how many wraps for secondary and cross over. And I have flex weave for antenna wire which I am guessing to start with about 70 feet for 40M and 20M. I don't want to just pull something off of the net to make the 64:1 I want to make sure it is tried and true. Thanks for your help. 


Event: Elmer Net - 06/02/2021 #cal-reminder

sfarc@w6ek.groups.io Calendar <noreply@...>
 

Reminder: Elmer Net

When:
06/02/2021
7:30pm to 8:30pm
(UTC-07:00) America/Los Angeles

Where:
W6EK Repeater - 145.430 -600, PL162.2

View Event

Description:

The Elmer Net meets every 1st and 3rd Wednesday, and is devoted to answering your questions, solving puzzling issues related to ham radio, and scheduling help for all Hams. No question is "stupid". We encourage everyone to ask away so we can all learn and grow our knowledge together. Web address: http://w6ek.org/nets.html


Event: SFARC Net - 06/03/2021 #cal-reminder

sfarc@w6ek.groups.io Calendar <noreply@...>
 

Reminder: SFARC Net

When:
06/03/2021
7:30pm to 8:30pm
(UTC-07:00) America/Los Angeles

Where:
W6EK Repeater - 145.430 -600, PL162.2

View Event

Description:
Check-in for Club updates from Officers and members, QSTs and more. Everyone is welcome!


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Jef - N5JEF
 

Orion is certainly right that folding insulated wire back will have little effect on electrical length (thus SWR) unless you bare the insulation on the main length, and at that point connect the end of the short length that you folded back...

- Jef


On Tue, Jun 1, 2021 at 3:31 PM Orion - AI6JB <ojendres@...> wrote:

Hi Eric,

 

You said “… trimming, folding back wire, …”.  Does that mean you trimmed the length of you wire by just folding back the wire without cutting wire off the end?

 

If so, “folding back the wire” will have minimum effect on your SWR.  You need to physically cut wire to tune the antenna, at least that is my experience.

 

73

Orion, AI6JB

 

 

 

From: sfarc@w6ek.groups.io <sfarc@w6ek.groups.io> On Behalf Of Eric - KN6GYX via groups.io
Sent: Saturday, May 29, 2021 22:58
To: sfarc@w6ek.groups.io Notification <noreply@groups.io>; sfarc@w6ek.groups.io
Subject: Re: [from W6EK Groups.io] File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

 

Hello Brian, yes great presentation, a wealth of information packed into one PDF file, just what I was looking for, and thanks for taking the time to get me going on this last night. 
I went up to Bald Mtn. above the Georgetown Airport to try out my home brew 49:1 unun and new yaesu ft-891 accompanied with the LDG Z11 Pro 2. I rushed around to get every thing set up wading through madrones  while fighting off mosquitoes which turned out to be quite the distraction from the goal. After many attempts finally got wire up in tree and supported on other trees. And after trimming, folding back wire, adding eight ferrite chokes, changing coax lengths still had very high SWR. So I put up my known to work Super Antenna and tried to make my QSO’S to no avail, I was only able to listen in with my cries CQ,CQ,CQ!! Back to the drawing board. Have a great week end folks!

KN6GYX- Eric


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Orion - AI6JB
 

Hi Eric,

 

You said “… trimming, folding back wire, …”.  Does that mean you trimmed the length of you wire by just folding back the wire without cutting wire off the end?

 

If so, “folding back the wire” will have minimum effect on your SWR.  You need to physically cut wire to tune the antenna, at least that is my experience.

 

73

Orion, AI6JB

 

 

 

From: sfarc@w6ek.groups.io <sfarc@w6ek.groups.io> On Behalf Of Eric - KN6GYX via groups.io
Sent: Saturday, May 29, 2021 22:58
To: sfarc@w6ek.groups.io Notification <noreply@groups.io>; sfarc@w6ek.groups.io
Subject: Re: [from W6EK Groups.io] File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

 

Hello Brian, yes great presentation, a wealth of information packed into one PDF file, just what I was looking for, and thanks for taking the time to get me going on this last night. 
I went up to Bald Mtn. above the Georgetown Airport to try out my home brew 49:1 unun and new yaesu ft-891 accompanied with the LDG Z11 Pro 2. I rushed around to get every thing set up wading through madrones  while fighting off mosquitoes which turned out to be quite the distraction from the goal. After many attempts finally got wire up in tree and supported on other trees. And after trimming, folding back wire, adding eight ferrite chokes, changing coax lengths still had very high SWR. So I put up my known to work Super Antenna and tried to make my QSO’S to no avail, I was only able to listen in with my cries CQ,CQ,CQ!! Back to the drawing board. Have a great week end folks!

KN6GYX- Eric


Re: CLUB SOTA JUNE 5th to SCOTT HILL (W6/NS-413). #sota

Dennis - WU6X
 

How long was the wire? For the Unun to work properly the wire must be close to a half wave on the lowest band to be worked. So, if 40m and up is the bands you want to work, cut the wire to 64 feet and use a non-conductive insulator at the tie-off end. Also, uses clamp-on common mode choke at the radio end. 

I’ve built many and they all work perfectly without a tuner, but typically 64:1. 

73,

Dennis
iPhone Mobile

On Jun 1, 2021, at 1:11 PM, Eric - KN6GYX via groups.io <kisedaconstruction@...> wrote:

Hello Dustin, looking forward to my first SOTA activation. I tried my home brew this week end with the  EFHW with 49:1 unun I had way high SWR so I set up the Super Antenna was not able to make any QSO’s but able to listen in on 40M. Have a great day!

--
Dennis - WU6X


Re: CLUB SOTA JUNE 5th to SCOTT HILL (W6/NS-413). #sota

Eric - KN6GYX
 

Hello Dustin, looking forward to my first SOTA activation. I tried my home brew this week end with the  EFHW with 49:1 unun I had way high SWR so I set up the Super Antenna was not able to make any QSO’s but able to listen in on 40M. Have a great day!


Re: CLUB SOTA JUNE 5th to SCOTT HILL (W6/NS-413). #sota

Derek - KM6BJK
 

Hey Dustin,

Looks like your email domain got filtered in the message. Just shows "w6yue1@..." for me. Please forgive me if I'm missing something silly to get your email. I would like to join the email chain and am interested in attending this Saturday. eellsd@... (Gmail)

-Derek
KM6BJK


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Bruce - K6BAA
 

Eric,

Don't be discouraged, conditions are not good, especially yesterday. In a couple years you will be amazed with pile ups and even working the world on 5 watts.

Bruce-K6BAA



On 5/29/2021 10:57 PM, Eric - KN6GYX via groups.io wrote:

Hello Brian, yes great presentation, a wealth of information packed into one PDF file, just what I was looking for, and thanks for taking the time to get me going on this last night. 
I went up to Bald Mtn. above the Georgetown Airport to try out my home brew 49:1 unun and new yaesu ft-891 accompanied with the LDG Z11 Pro 2. I rushed around to get every thing set up wading through madrones  while fighting off mosquitoes which turned out to be quite the distraction from the goal. After many attempts finally got wire up in tree and supported on other trees. And after trimming, folding back wire, adding eight ferrite chokes, changing coax lengths still had very high SWR. So I put up my known to work Super Antenna and tried to make my QSO’S to no avail, I was only able to listen in with my cries CQ,CQ,CQ!! Back to the drawing board. Have a great week end folks!

KN6GYX- Eric



Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Eric - KN6GYX
 

Hello Brian, yes great presentation, a wealth of information packed into one PDF file, just what I was looking for, and thanks for taking the time to get me going on this last night. 
I went up to Bald Mtn. above the Georgetown Airport to try out my home brew 49:1 unun and new yaesu ft-891 accompanied with the LDG Z11 Pro 2. I rushed around to get every thing set up wading through madrones  while fighting off mosquitoes which turned out to be quite the distraction from the goal. After many attempts finally got wire up in tree and supported on other trees. And after trimming, folding back wire, adding eight ferrite chokes, changing coax lengths still had very high SWR. So I put up my known to work Super Antenna and tried to make my QSO’S to no avail, I was only able to listen in with my cries CQ,CQ,CQ!! Back to the drawing board. Have a great week end folks!

KN6GYX- Eric


Re: File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

Dennis - WU6X
 

Thanks Brian ... A excellent presentation! ... This file has been moved to the FILES/Antennas/HF Antennas/ folder.

https://w6ek.groups.io/g/sfarc/files/Antennas/HF%20Antennas/The-End-Fed-Half-Wave-Antenna.pdf

Dennis - WU6X


File /Antennas/The-End-Fed-Half-Wave-Antenna.pdf uploaded #file-notice

sfarc@w6ek.groups.io Notification <noreply@...>
 

The following files have been uploaded to the Files area of the sfarc@w6ek.groups.io group.

By: Brian - AI6US <ai6us@...>

Description:
An excellent presentation on End Fed Antennas with references on using different ratio UNUNs. Includes building plans and discussion on adding a capacitor, the compensation coil and air venting.


Happening Now: SFARC Net - 05/27/2021 #cal-notice

sfarc@w6ek.groups.io Calendar <noreply@...>
 

SFARC Net

When:
05/27/2021
7:30pm to 8:30pm
(UTC-07:00) America/Los Angeles

Where:
W6EK Repeater - 145.430 -600, PL162.2

View Event

Description:
Check-in for Club updates from Officers and members, QSTs and more. Everyone is welcome!

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