Date   

Re: Power conditioner for Lifepo4 type battery?

Howard E. Mahran / WA1HEM
 

Thank you to everyone for the great input and advice. Based on your input I've decided to get the West Mountain Epic 58404-1795 unit which specifically calls out LifePo4 batteries as its default charging setup.    --
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Power conditioner for Lifepo4 type battery?

Mark Kenworthy
 

One of the advantages of a battery with the Battery Management System (BMS) is that the BMS prevents the voltage in the battery from dropping too low and thus damaging the battery, or overcharging, which again can damage the battery.  Hooking up to a LiFe without the management system can cause irreparable damage to the battery if you run it below its minimum voltage.

 

Mark

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Benjamin Thompson via groups.io
Sent: Tuesday, October 6, 2020 12:53 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] Power conditioner for Lifepo4 type battery?

 

I would assume as long as your power supply voltage is set correctly you’d be fine. Unless you are looking for a smart charger. If you want something smarter, consider the Redarc BCDC1225D. It will take the power supply, condition the power to charge the battery, and then you run your rig off the battery. This is a common device and setup for off-road uses. It also has a solar panel input if you are interested.

 

-Benjamin Thompson, sent from my phone.


From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> on behalf of Mark Kenworthy <mark@...>
Sent: Tuesday, October 6, 2020 12:47:39 PM
To: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io>
Subject: Re: [SnoVARC] Power conditioner for Lifepo4 type battery?

 

RVs use such a setup, and there are “battery converter” units (e.g., Progressive Dynamics) that auto-switchover that also produce a high enough charge voltage for LiFe batteries that include the battery management system and protection circuitry (e.g., Dakota Lithium).  Please note these battery converters need to be a model made for the lithium batteries, not the normal lead-acid version (which don’t put out a high enough voltage).

 

Mark

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Howard E. Mahran / WA1HEM via groups.io
Sent: Tuesday, October 6, 2020 10:21 AM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Power conditioner for Lifepo4 type battery?

 

Recommendations for a power backup and conditioner for a Lifepo4 type battery. I currently use a PwrGate type backup with an SLA backup battery, Power Supply, and Rig plugged in. Is there a recommended similar unit to keep a Lifepo4 charged that will automatically switch to battery when power is out while keeping it charged when power is on?

TIA!
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Power conditioner for Lifepo4 type battery?

Benjamin Thompson
 

I would assume as long as your power supply voltage is set correctly you’d be fine. Unless you are looking for a smart charger. If you want something smarter, consider the Redarc BCDC1225D. It will take the power supply, condition the power to charge the battery, and then you run your rig off the battery. This is a common device and setup for off-road uses. It also has a solar panel input if you are interested.

-Benjamin Thompson, sent from my phone.


From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> on behalf of Mark Kenworthy <mark@...>
Sent: Tuesday, October 6, 2020 12:47:39 PM
To: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io>
Subject: Re: [SnoVARC] Power conditioner for Lifepo4 type battery?
 

RVs use such a setup, and there are “battery converter” units (e.g., Progressive Dynamics) that auto-switchover that also produce a high enough charge voltage for LiFe batteries that include the battery management system and protection circuitry (e.g., Dakota Lithium).  Please note these battery converters need to be a model made for the lithium batteries, not the normal lead-acid version (which don’t put out a high enough voltage).

 

Mark

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Howard E. Mahran / WA1HEM via groups.io
Sent: Tuesday, October 6, 2020 10:21 AM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Power conditioner for Lifepo4 type battery?

 

Recommendations for a power backup and conditioner for a Lifepo4 type battery. I currently use a PwrGate type backup with an SLA backup battery, Power Supply, and Rig plugged in. Is there a recommended similar unit to keep a Lifepo4 charged that will automatically switch to battery when power is out while keeping it charged when power is on?

TIA!
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Power conditioner for Lifepo4 type battery?

Mark Kenworthy
 

RVs use such a setup, and there are “battery converter” units (e.g., Progressive Dynamics) that auto-switchover that also produce a high enough charge voltage for LiFe batteries that include the battery management system and protection circuitry (e.g., Dakota Lithium).  Please note these battery converters need to be a model made for the lithium batteries, not the normal lead-acid version (which don’t put out a high enough voltage).

 

Mark

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Howard E. Mahran / WA1HEM via groups.io
Sent: Tuesday, October 6, 2020 10:21 AM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Power conditioner for Lifepo4 type battery?

 

Recommendations for a power backup and conditioner for a Lifepo4 type battery. I currently use a PwrGate type backup with an SLA backup battery, Power Supply, and Rig plugged in. Is there a recommended similar unit to keep a Lifepo4 charged that will automatically switch to battery when power is out while keeping it charged when power is on?

TIA!
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Power conditioner for Lifepo4 type battery?

Paul Butzi (W7PFB)
 

I am also keen to know if there is a solution.  

-p W7PFB
73, Don’t forget to smile and have fun!

On Oct 6, 2020, at 10:21 AM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

Recommendations for a power backup and conditioner for a Lifepo4 type battery. I currently use a PwrGate type backup with an SLA backup battery, Power Supply, and Rig plugged in. Is there a recommended similar unit to keep a Lifepo4 charged that will automatically switch to battery when power is out while keeping it charged when power is on?

TIA!
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Power conditioner for Lifepo4 type battery?

Howard E. Mahran / WA1HEM
 

Recommendations for a power backup and conditioner for a Lifepo4 type battery. I currently use a PwrGate type backup with an SLA backup battery, Power Supply, and Rig plugged in. Is there a recommended similar unit to keep a Lifepo4 charged that will automatically switch to battery when power is out while keeping it charged when power is on?

TIA!
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Winlink VARA FM and Winlink packet FM

Ryan - KJ7GIE
 

Thanks Paul,
One thing I don't see anyone talk about, and because no one talks about it I find it causes confusion, is the difference between Modulation/Demodulation (MoDem) and the application which is riding over the modem. Here is a very quick summary which, if useful to expand on, I'm happy to talk more about it.

Bits - the 1s and 0s that make-up data communications

Serial communications - Most people are familiar with "RS-232" but often identify this as a 9 or 25 pin connector. Actually, RS-232 is a specification for how to represent bits using voltage changes referenced to ground. For this reason the two sides must share a stable ground in order to detect a voltage change referenced to whatever ground is. Now, ground voltage doesn't matter as long as its stable (although the spec only requires devices to handle +/- 25 volts it seems). There are various control pins for RS-232. Other serial standards exist with some supporting a single pin. Some used a lot more pins like my favorite v.35 which is a big clunky 34 pin plug but runs at significantly higher speed than RS-232. Serial can be, and often is, emulated over USB.

Modem - A modem (and give me tremendous leeway here in my description) on the TX side modulates the voltage changes on a serial interface into the audio spectrum and on the RX side demodulates that audio into actual voltage changes for the rx equipment. Any technology you can hold a voice conversation over you can attach a modem and "extend" a serial cable. This includes your home phone, your radio, sat-phone, your cell phone, tin cans and a string, etc.

Now, the part that I think gets confusing is that there are hundreds of ways to modulate voltage changes. And, as you can imagine, each one of them is designed to take advantage, and suppress disadvantages, of whatever "voice channel" is being used. Speed vs. reliability is the game.

Vara vs. "Packet Winlink".
Vara uses orthogonal frequency-division multiplexing (OFDM) to do the modulation / demodulation. You can look-up the specifics of that if you like. It also uses Forward Error Correction (FEC) which I'll touch on later.

"Packet Winlink" + Soundmodem, as described in Paul's link, is using a protocol derived from X.25. Now, I have a funny history with X.25 because it was a competing standard to Internet Protocol (IP) back in the ancient times. X.25 is ancient and I'm sorry to anyone who actually built these networks but it is. But, X.25 has 1 tremendous advantage going for it: it's silly reliable. And, that silly reliability is probably why it was chosen to develop AX.25 which became somewhat of a standard within the amateur radio community. That silly reliability comes with the tremendous cost of slow speed. Ultimately, that speed disadvantage is why it was scrapped as a viable commercial application and IP won. But, I digress. The other advantage, because its ancient, is that A/X.25 has tons of reference implementations and so is, somewhat, universally available on all platforms.

Winlink - Then, there is the winlink, or the application protocol, itself. I believe the current version of this is Open B2F. It specifies _which_ bits need to be exchanged and in what order to deliver and forward a message using Winlink. This "application protocol" does not change no matter which method you decide to initiate your winlink exchange (telnet, vera, winlink packet).

The actual "bits" transmitted using winlink don't change based on which modulation method you use. But, the way those bits get "modulated" do. No question Vara is faster than AX.25. But is it reliable? That's an exercise I've not done or looked into. Again, reliability vs. speed is always the battle. It's the same as a voice conversation. If I talk very slowly, repeat each word 5 times, you repeat back to me 3 times what you heard, I acknowledge you got it right, and you acknowledge that you received my acknowledgement before I speak the next word then we're going to have a _very_ reliable conversation that takes days to complete. As our radios get better, the expectation is that hearing becomes more reliable. Additionally, we're now using very sophisticated modulation methods that selectively use the limited audio spectrum to provide error correction _without_ having to retransmit bits (FEC). Vara using a mathod of FEC called Turbo Code. Using FEC becomes a huge speed advantage as it means you don't need to retransmit bits as the tx side already provided enough data for the rx end to reliably reconstruct any bits they may may have lost. You're transmitting just bit more data than the raw message but overall you're transmitting significantly less than repeating yourself.

Software - Winlink provides the application. You run it on your computer.

Modem? This gets tricky. We need _something_ to convert bits to audio tones. In the case of Vara this is also software. Vara, running on your computer, is a software modem. It's converting bits to audio tones and "playing" those audio tones out to a sound card. Soundmodem provides the same function. What's a TNC? A TNC is a modem+packet assembler/disassembler. Now, I didn't explain that part assembler part. You see, X.25 has very specific data its going to wrap around bits that make-up your winlink message. In it's most bare form Winlink will communicate the message bits, over serial, to the TNC. The TNC will "wrap" (or really assemble) this in an AX.25 packet, modulate it, key the radio, and play the modulated audio. The TNC will also "listen" for X.25, demodulate it, disassemble it, and flip the voltages on the serial to the PC where the software will display the message. So a TNC is lot more than a modem and may implement one or more of the network layers like AX.25, PACTOR, Winmor, APRS, etc. This lets the software on the computer feed the TNC raw bits without knowing what happens next. TNCs like this have fallen out of favor simply because our PCs are powerful enough to emulate everything a TNC does in software (except the sound card part, see below) cheaper and we can change from AX.25 to Vara in real time without swapping boxes (like Paul is).

Sound Card? - All right, so we've got a winlink set of bits, we've got the network formatted bits (Vara or AX.25) wrapped around it, and we've modulated those bits into the audio spectrum. How do we get that on the air? We use a sound card. Sound cards are responsible for converting digital audio into analog audio via use of a Digital Audio Convertor (DAC). This _cannot_ be emulated. The analog bit means we really need an analog signal just like you produce when talking into your microphone. If your radio does not have a built-in sound card then you need one between the radio and and the computer. The interface to the computer is digital (commonly USB) and the interface to the radio is analog (usually a phono plug or DB-9 connector). Now, the additional bit we need for the radio is the serial pin that keys the radio so that the radio knows to switch to TX mode when the sound card wants to tx sounds. That's why the DRA series and other "radio sound cards" are needed.

All bits deconstructed:
Software - Network - Modem - Sound Card - Key the Radio - On the Air

In my Vara set-up it looks like this:
Winlink(software) -> Vara(network, modem, key the radio), IC-7100(sound card, emulated PTT pin over USB, On the Air).

Anyway, this got a bit long. But I hope it helps. Some radios make this very easy (like the IC-7100). Others just need a sound card with the ability to key the radio (and a horribly cheap way to do this is with VoX. Don't use VoX). As time marches on I assume we'll see more packet implementations that emulate everything right up to the sound card. And, I suspect, it's not too long before more radios will embed sound cards to do packet; even HTs. This is all a side-effect of PCs getting really fast which allows for very sophisticated ways of hearing tones in the noise.


Winlink VARA FM and Winlink packet FM

Paul Butzi (W7PFB)
 

Since a number of us have gotten VARA FM working for local winlink on our stations, I thought I’d describe how I have my radios configured to do both VARA FM and packet FM (which is what all of you were using before VARA FM came along).

There are several software TNC programs that will do packet stuff through soundcards.  I spent some time evaluating options before settling on UZ5HO Soundmodem.  And I spent some time struggling through the various setup issues, and in the end I had a computer, DRA-36 or DRA-50 sound card, and a radio where if I started a packet session in Winlink Express, it would all work and connect using FM packet radio, and if I started a VARA FM packet session in Winlink Express, it would instead make the connection using VARA FM, and everything was just fine.

Naturally immediately AFTER I did all that work I found an excellent article that describes exactly how to do the setup.  It is at

Note especially that one of the authors, Scott Currie, NS7C, is a very FB guy, and has been very helpful to me with Winlink and packet radio questions in the past.  I suspect anything you find online that has his name associated with it is trustworthy and worth reading.




-p W7PFB
73, Don’t forget to smile and have fun!


Re: Recording: TOWER FALL SAFETY - Presented by Jim Idelson K1IR of Zero Falls Alliance October 1, 2020

Howard E. Mahran / WA1HEM
 

Yes. Jim gave us permission to share

On Oct 2, 2020, at 12:20 PM, Paul Zoba <pezoba@...> wrote:

Do we have the permission to share this presentation with others?


On Oct 2, 2020, at 8:55 AM, Howard E. Mahran / WA1HEM <snovarc+owner@snovarc.groups.io> wrote:



TOWER FALL SAFETY - There have been too many avoidable amateur radio tower climbing accidents and deaths.

If you missed this fantastic and compelling presentation about tower safety you can watch it here.

Watch it at this link:
https://zoom.us/rec/share/kt5g70ndVlHcKj0vf6QRA2KWB6beWLPHdLDZJxzMaWx_5uSO4mf_QakRlUgQjalO.5saUJRSGzSOjQoMG

Passcode: tV+sWYm1 

--


***********************************
Howard Mahran
(425) 864-5104
***********************************





--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


Re: Recording: TOWER FALL SAFETY - Presented by Jim Idelson K1IR of Zero Falls Alliance October 1, 2020

Paul Zoba
 

Do we have the permission to share this presentation with others?


On Oct 2, 2020, at 8:55 AM, Howard E. Mahran / WA1HEM <snovarc+owner@snovarc.groups.io> wrote:



TOWER FALL SAFETY - There have been too many avoidable amateur radio tower climbing accidents and deaths.

If you missed this fantastic and compelling presentation about tower safety you can watch it here.

Watch it at this link:
https://zoom.us/rec/share/kt5g70ndVlHcKj0vf6QRA2KWB6beWLPHdLDZJxzMaWx_5uSO4mf_QakRlUgQjalO.5saUJRSGzSOjQoMG

Passcode: tV+sWYm1 

--


Recording: TOWER FALL SAFETY - Presented by Jim Idelson K1IR of Zero Falls Alliance October 1, 2020

Howard E. Mahran / WA1HEM
 

TOWER FALL SAFETY - There have been too many avoidable amateur radio tower climbing accidents and deaths.

If you missed this fantastic and compelling presentation about tower safety you can watch it here.

Watch it at this link:
https://zoom.us/rec/share/kt5g70ndVlHcKj0vf6QRA2KWB6beWLPHdLDZJxzMaWx_5uSO4mf_QakRlUgQjalO.5saUJRSGzSOjQoMG

Passcode: tV+sWYm1 

--


Re: Next club meeting is October 1. Business 6:15. Elmer 7 p.m.

Robin WA7CPA
 

From our presenter last night:
"What a great group. Enjoyed every minute of it. Thanks for the invitation.

73 Jim K1IR"

https://zerofalls.org/our-inspiration/
Watch his tower safety interview on Hamnation:
https://twit.tv/shows/ham-nation/episodes/432
Scroll to 40':30"

Also search YouTube for many K1IR video presentations



Snovarc Business Meeting and Elmer Session - Thu, 10/01/2020 #cal-notice

snovarc@snovarc.groups.io Calendar <noreply@...>
 

Snovarc Business Meeting and Elmer Session

When:
Thursday, 1 October 2020
6:15pm to 8:00pm
(GMT-07:00) America/Los Angeles

Where:
Zoom Meeting

Description:

Join Zoom Meeting
 
Meeting ID: 931 964 1698
Passcode: 3UJNed
One tap mobile
+12532158782,,9319641698#,,,,,,0#,,070760# US (Tacoma)
+13462487799,,9319641698#,,,,,,0#,,070760# US (Houston)
 
Dial by your location
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 900 6833 US (San Jose)
        +1 312 626 6799 US (Chicago)
        +1 929 205 6099 US (New York)
        +1 301 715 8592 US (Germantown)
Meeting ID: 931 964 1698
Passcode: 070760


Snovarc Business Meeting and Elmer Session - Thu, 10/01/2020 6:15pm-8:00pm #cal-reminder

snovarc@snovarc.groups.io Calendar <snovarc@...>
 

Reminder: Snovarc Business Meeting and Elmer Session

When: Thursday, 1 October 2020, 6:15pm to 8:00pm, (GMT-07:00) America/Los Angeles

Where:Zoom Meeting

View Event

Description:

Join Zoom Meeting
 
Meeting ID: 931 964 1698
Passcode: 3UJNed
One tap mobile
+12532158782,,9319641698#,,,,,,0#,,070760# US (Tacoma)
+13462487799,,9319641698#,,,,,,0#,,070760# US (Houston)
 
Dial by your location
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 900 6833 US (San Jose)
        +1 312 626 6799 US (Chicago)
        +1 929 205 6099 US (New York)
        +1 301 715 8592 US (Germantown)
Meeting ID: 931 964 1698
Passcode: 070760


Do you have VARA FM? #poll-notice

Howard E. Mahran / WA1HEM
 
Edited

Looking at a potential exercise that would include point-to-point messaging.  Please indicate whether you have tried or have installed any of the following. Answer all that apply to you

Results

See Who Responded


More Information On Saturday CDCCC Drill

Rowland
 

Please read the following information for more details on this Saturday's Carnation Duvall Citizen Corps Drill on 9/26. It is an online drill using a program called Zoom.  If you are not familiar with Zoom there is information in the attachment that may help you.



This is the last call to register for participating in the 2020 Carnation-Duvall Citizen Corps Annual Exercise. Please reply to info@... today to reserve your spot. Attached is some additional information about how this virtual drill will work.

This year we are focusing on a failure of the Tolt Dam and the surrounding responses, which as you all know is very timely!

The Exercise will run from 10AM - Noon on Saturday, September 26th. Being that this is a virtual exercise we are limiting the number of CDCCC Volunteers that can participate to 50.

The exercise is open to our CERTs, MRC and SnoVARC volunteers.


Thanks,

Rowland


Re: Next club meeting is October 1. Business 6:15. Elmer 7 p.m.

Rowland
 

https://zoom.us/j/9319641698?pwd=czVPNHdjenY1MXRTVGtXaVp2VHcwQT09

Meeting ID: 931 964 1698

Password: 3UJNed

One tap mobile

+12532158782,,95119740887#,,,,0#,,546508# US (Tacoma)



Thanks,

Rowland



On Tue, Sep 22, 2020 at 7:49 AM Ken Kosters <kenkosters@...> wrote:
Link to zoom meeting please.

Thanks

Ken

On Sep 21, 2020, at 5:51 PM, Robin Amundson <wa7cpa@...> wrote:

Hi All,
As our club is oriented toward disaster preparedness, our October 1 Elmer session will be how to prevent ham radio tower climbing disasters, of which there are too many, mostly preventable. Our presenter K1IR will be presenting from the East Coast, so it will be 10 p.m. for him. It would be awesome if we could get 20+ in our Zoom audience to make this worthwhile for Jim's time. I recently saw his presentation on another Zoom meeting and it was jaw-dropping for everyone. It stoked an additional hour of conversation after Jim left the meeting. That good. PLEASE reserve this time on your calendar. Invite anyone you know outside the club who might be taking down a tower or putting up a tower or who is an observer on the ground. Jim is on a mission for no more amateur radio tower climbing fatalities.

ELMER SESSION for October 1st Meeting:

Even if you never climb a tower, some time a ham friend may. Jim Idelson, K1IR, will empower you with the information you need as an on-the-ground observer/helper to say STOP when something does not look right. There have been too many avoidable amateur radio tower climbing accidents and deaths. Jim did extensive research on the matter, subsequently founding Zero Falls Alliance, https://zerofalls.org/. He discovered underlying causes and actionable preventive measures to amateur radio tower climbing accidents and fatalities. His deftly delivered presentations are shocking, riveting, and potentially life-saving. That is the point.. 


Thank you and 73,
Robin Amundson, WA7CPA


Time to Get On Board

Rowland
 

Hi SnoVARC Members,

This coming Saturday (September 26th) is the Annual Carnation Duvall Citizen Corps Council Volunteers Drill. We need participation from SnoVARC members.  Always remember we are part of the CDCCC and it is one of our served agencies. It is very important for us to work with the other groups within CDCCC so we are familiar with how the organization operates as a whole so when something does arise and they need our help we have a better understanding of what might be required of us.

The exercise will run from 10AM-Noon and is open to our Community Emergency Response Teams (CERTs), Medical Reserve Corps (MRC) and Sno Valley Amateur Radio Club members (SnoVARC).   

So please mark your calendars for this Saturday to participate. It will be a virtual exercise so you can participate from the comfort of your home.

To sign up send an email to info@.... For questions call Kathy Brasch @425-941-9295 or email info@...


Thanks,

Rowland


Annual CERT, SNOVARC, Medical reserve Corp Exercise

Tom WA7TBP
 

Hello all,
Just wanted to remind you the annual September exercise for the groups shown in the subject line is this Saturday. Please join us for this 2 hour on-line experience. Please sign up per the instructions shown below. Looking forward to seeing you this Saturday.
73,
Tom, WA7TBP
 
Saturday, September 26, from 10 AM – 12 PM. On-line event.
It's time for our Annual CDCCC Training Exercise!! This year we are focusing on a failure of the Tolt Dam and the surrounding responses, which as you all know is very timely! The Exercise will run from 10 AM - Noon on Saturday, September 26th. Being that this is a virtual exercise we are limiting the number of volunteers that can participate to 50, so SIGN UP EARLY!
The exercise is open to our Community Emergency Response Teams (CERTs), Medical Reserve Corps (MRC) and Sno Valley Amateur Radio Club Ham operator (SnoVARC) volunteers.
To sign up send an email to info@.... For questions call Kathy Brasch @425-941-9295 or email info@.... 



Re: Next club meeting is October 1. Business 6:15. Elmer 7 p.m.

Robin WA7CPA
 

Link is on SnoVarc website. Howard usually does reminder post here.


On Tue, Sep 22, 2020, 7:49 AM Ken Kosters <kenkosters@...> wrote:
Link to zoom meeting please.

Thanks

Ken

On Sep 21, 2020, at 5:51 PM, Robin Amundson <wa7cpa@...> wrote:

Hi All,
As our club is oriented toward disaster preparedness, our October 1 Elmer session will be how to prevent ham radio tower climbing disasters, of which there are too many, mostly preventable. Our presenter K1IR will be presenting from the East Coast, so it will be 10 p.m. for him. It would be awesome if we could get 20+ in our Zoom audience to make this worthwhile for Jim's time. I recently saw his presentation on another Zoom meeting and it was jaw-dropping for everyone. It stoked an additional hour of conversation after Jim left the meeting. That good. PLEASE reserve this time on your calendar. Invite anyone you know outside the club who might be taking down a tower or putting up a tower or who is an observer on the ground. Jim is on a mission for no more amateur radio tower climbing fatalities.

ELMER SESSION for October 1st Meeting:

Even if you never climb a tower, some time a ham friend may. Jim Idelson, K1IR, will empower you with the information you need as an on-the-ground observer/helper to say STOP when something does not look right. There have been too many avoidable amateur radio tower climbing accidents and deaths. Jim did extensive research on the matter, subsequently founding Zero Falls Alliance, https://zerofalls.org/. He discovered underlying causes and actionable preventive measures to amateur radio tower climbing accidents and fatalities. His deftly delivered presentations are shocking, riveting, and potentially life-saving. That is the point.. 


Thank you and 73,
Robin Amundson, WA7CPA

581 - 600 of 6518