Date   

Re: 6M Sporadic E talk

Jonesy W3DHJ
 

On Wed, 28 Apr 2021, Eugene Colton wrote:

Got kicked off abruptly
Eugene
Yup. Looks like it might've only been set for 30 min.

Jonesy
--
Marvin L Jones | W3DHJ | W3DHJ | https://W3DHJ.net/
Pueblo, Colorado | @ | Jonesy | __ linux FreeBSD
38.238N 104.547W | jonz.net | DM78rf | 73 SK


Unfinfished Zoom talk

James Duffey
 

I see out Zoom meeting time expired before I could finish my talk. I had three charts left, one on feedline, one on masts, and one conclusion. I have attached a PDF of my talk to this e-mail so you can get what you missed.

If you have questions, feel free to e-mail me or text to 505 228 5491. - Duffey KK6MC


Zoom Reconnect

Bill Mader
 

Join Zoom Meeting
https://us04web.zoom.us/j/77263444364?pwd=dmdqbVhleFBxYnpXR0JmTWFPZ3ZnUT09

Meeting ID: 772 6344 4364
Passcode: kDJ08h

K8TE


Re: 6M Sporadic E talk

Eugene Colton
 

Got kicked off abruptly 
Eugene 


On Apr 28, 2021, at 7:53 AM, Bill Mader <billamader@...> wrote:


Here is the invitation to join tonight's Zoom presentation at 6:30 p.m. MDT:

Join Zoom Meeting https://us04web.zoom.us/j/76474997936?pwd=ckkrZEV1djFUZTdVelJQTStxbXo2dz09 Meeting ID: 764 7499 7936 Passcode: fRUvG3

73, Bill Mader, K8TE
New Mexico QSO Party 9 Apr 2022
ARRL New Mexico Section Manager
ARRL - The national association for Amateur Radio
Duke City Hamfest Chairman www.dukecityhamfest.org Virtually 17-19 Sep 2021
Secretary and Past President, Albuquerque DX Association 
W6H NM Coordinator, Route 66 On-the-Air 11-19 Sep 2021


On Tue, Apr 27, 2021 at 9:21 PM James Duffey <JamesDuffey@...> wrote:
OK, K8TEE has diplomatically pointed out that I have wrong date in the e-mail for my talk; it is on April 28, not the 27th. Thanks Tom. I would plead typo and poor proof reading, but…

James Duffey KK6MC
Cedar Crest NM

> On Apr 27, 2021, at 21:13, Tom Ellis <tl_ellis@...> wrote:
>
> Jim,
>
> It already is April 27th.
>
> Tom
> K5TEE
>
>
> -----Original Message-----
> From: main@nmvhf.groups.io [mailto:main@nmvhf.groups.io] On Behalf Of James
> Duffey
> Sent: Tuesday, April 27, 2021 8:51 PM
> To: NM VHF
> Cc: James Duffey; Bill Mader
> Subject: [nmvhf] 6M Sporadic E talk
>
> I am giving a presentation on Sporadic E to the Albuquerque DX Association
> tomorrow night, April 27. It will be on Zoom.
>
> K8TE is going to make provisions for NMVHF Society members to view the
> provision. Standby for his input on how to sign up. - Duffey KK6MC
>
>
> KK6MC
> James Duffey
> Cedar Crest NM
> jamesduffey@...
>
>
>
>
>
>
>
>







Re: 6M Sporadic E talk

Bill Mader
 

Here is the invitation to join tonight's Zoom presentation at 6:30 p.m. MDT:

Join Zoom Meeting https://us04web.zoom.us/j/76474997936?pwd=ckkrZEV1djFUZTdVelJQTStxbXo2dz09 Meeting ID: 764 7499 7936 Passcode: fRUvG3

73, Bill Mader, K8TE
New Mexico QSO Party 9 Apr 2022
ARRL New Mexico Section Manager
ARRL - The national association for Amateur Radio
Duke City Hamfest Chairman www.dukecityhamfest.org Virtually 17-19 Sep 2021
Secretary and Past President, Albuquerque DX Association 
W6H NM Coordinator, Route 66 On-the-Air 11-19 Sep 2021


On Tue, Apr 27, 2021 at 9:21 PM James Duffey <JamesDuffey@...> wrote:
OK, K8TEE has diplomatically pointed out that I have wrong date in the e-mail for my talk; it is on April 28, not the 27th. Thanks Tom. I would plead typo and poor proof reading, but…

James Duffey KK6MC
Cedar Crest NM

> On Apr 27, 2021, at 21:13, Tom Ellis <tl_ellis@...> wrote:
>
> Jim,
>
> It already is April 27th.
>
> Tom
> K5TEE
>
>
> -----Original Message-----
> From: main@nmvhf.groups.io [mailto:main@nmvhf.groups.io] On Behalf Of James
> Duffey
> Sent: Tuesday, April 27, 2021 8:51 PM
> To: NM VHF
> Cc: James Duffey; Bill Mader
> Subject: [nmvhf] 6M Sporadic E talk
>
> I am giving a presentation on Sporadic E to the Albuquerque DX Association
> tomorrow night, April 27. It will be on Zoom.
>
> K8TE is going to make provisions for NMVHF Society members to view the
> provision. Standby for his input on how to sign up. - Duffey KK6MC
>
>
> KK6MC
> James Duffey
> Cedar Crest NM
> jamesduffey@...
>
>
>
>
>
>
>
>







Wrong date for talk - It is on Wednesday the 28th, not the 27th

James Duffey
 

OK, K8TEE has diplomatically pointed out that I have wrong date in the e-mail for my talk; it is on April 28, not the 27th. Thanks Tom. I would plead typo and poor proof reading, but…

James Duffey KK6MC
Cedar Crest NM

James Duffey KK6MC
Cedar Crest NM


Re: 6M Sporadic E talk

James Duffey
 

OK, K8TEE has diplomatically pointed out that I have wrong date in the e-mail for my talk; it is on April 28, not the 27th. Thanks Tom. I would plead typo and poor proof reading, but…

James Duffey KK6MC
Cedar Crest NM

On Apr 27, 2021, at 21:13, Tom Ellis <tl_ellis@att.net> wrote:

Jim,

It already is April 27th.

Tom
K5TEE


-----Original Message-----
From: main@nmvhf.groups.io [mailto:main@nmvhf.groups.io] On Behalf Of James
Duffey
Sent: Tuesday, April 27, 2021 8:51 PM
To: NM VHF
Cc: James Duffey; Bill Mader
Subject: [nmvhf] 6M Sporadic E talk

I am giving a presentation on Sporadic E to the Albuquerque DX Association
tomorrow night, April 27. It will be on Zoom.

K8TE is going to make provisions for NMVHF Society members to view the
provision. Standby for his input on how to sign up. - Duffey KK6MC


KK6MC
James Duffey
Cedar Crest NM
jamesduffey@comcast.net








Re: 6M Sporadic E talk

Tom Ellis
 

Jim,

It already is April 27th.

Tom
K5TEE

-----Original Message-----
From: main@nmvhf.groups.io [mailto:main@nmvhf.groups.io] On Behalf Of James
Duffey
Sent: Tuesday, April 27, 2021 8:51 PM
To: NM VHF
Cc: James Duffey; Bill Mader
Subject: [nmvhf] 6M Sporadic E talk

I am giving a presentation on Sporadic E to the Albuquerque DX Association
tomorrow night, April 27. It will be on Zoom.

K8TE is going to make provisions for NMVHF Society members to view the
provision. Standby for his input on how to sign up. - Duffey KK6MC


KK6MC
James Duffey
Cedar Crest NM
jamesduffey@comcast.net


6M Sporadic E talk

James Duffey
 

I am giving a presentation on Sporadic E to the Albuquerque DX Association tomorrow night, April 27. It will be on Zoom.

K8TE is going to make provisions for NMVHF Society members to view the provision. Standby for his input on how to sign up. - Duffey KK6MC


KK6MC
James Duffey
Cedar Crest NM
jamesduffey@comcast.net


New Mexico QSO Party -- Logs due this Saturday!

Brian Mileshosky
 

Greetings —

If you participated in the New Mexico QSO Party weekend before last, and have *not* yet submitted your logs, please be aware that the log submission deadline is this Saturday (April 24).  Even if you only made a few contacts, we’d like to recognize your effort and accurately reflect the level of participation in 2021’s event statistics.

To submit your Cabrillo-formatted electronic log, please send as an attachment to logs@....   We will acknowledge receipt via email and at http://www.newmexicoqsoparty.org/wp/logs-received  

If you are a member of a New Mexico amateur radio club, be sure to list your club's name on your log (one club only, please) so it receives credit towards two special club awards that are up for grabs.

Thanks and 73,
Brian N5ZGT


New Mexico QSO Party -- Log submission reminder

Brian Mileshosky
 

Greetings —

If you participated in last Saturday's New Mexico QSO Party, and have *not* yet submitted your logs, we encourage you to do so.  Even if you only made a few contacts, we’d like to recognize your effort and accurately reflect the level of participation in 2021’s event statistics.

If you are a member of a New Mexico amateur radio club, be sure to list your club's name on your log (one club only, please) so it receives credit towards two special club awards that are up for grabs.

Logs must be received via email no later than April 24 (two weeks following the event).  To submit your Cabrillo-formatted electronic log, please send as an attachment to logs@....   We will acknowledge receipt via email and at http://www.newmexicoqsoparty.org/wp/logs-received  

Thanks and 73,
Brian N5ZGT


New Mexico QSO Party -- This Saturday!

Brian Mileshosky
 

Greetings —

Just a few days until the New Mexico QSO Party hits the HF, 6 meter, and 2 meter bands — this Saturday (April 10) from 8am-8pm MDT.

Our goal is for each of New Mexico’s 33 counties to have as many hams as possible operating during the event.  We still have a few empty counties to fill on the map, and some counties needing additional operators. 

Do you plan to participate...even if just for a short while?

If so, please let us know what county/counties you may operate from.  Even if your plans are just tentative at this point.  This information stokes participation from around the nation and helps the event's dedicated mobile operators plan their routes around the state to activate counties needing more activity for all to enjoy.

We will list your callsign on the New Mexico QSO Party's interactive activation map found at http://www.newmexicoqsoparty.org/wp/county-activation-plans/map

This is a super event for new and experienced hams alike. Operate from the comfort of your home, combine forces (safely) with hams in your club as a club activity, invite a group of friends to your shack for a multi-op operation, hit the road as a mobile station, or rally friends and club members to set up -- Field Day style! -- as part of the special expedition category.

This year's New Mexico QSO Party is sponsored by the dedicated members and leadership of Taos Amateur Radio Club.  Check out www.newmexicoqsoparty.org for additional details, and please invite other hams, mobile ops, or local clubs you know to participate in this Saturday's event.

We look forward to hearing lots of action on the bands.  And don't forget to submit your logs by April 24 (see rules for details)!

73,
Brian N5ZGT

On Mar 13, 2021, at 7:58 AM, Brian Mileshosky <n5zgt@...> wrote:

Greetings —

The 2021 New Mexico QSO Party takes place Saturday, April 10 from 8:00am MDT until 8:00pm MDT, and all Hams across New Mexico are invited to participate.  Amateur radio operators from across the United States -- and the world -- will be seeking New Mexicans on HF, 6 meters, and 2 meters during the event period, looking particularly to work hams in as many New Mexico counties as possible.  The Land of Enchantment will essentially be the "DX" on this day, making for a great time for all who participate.  Last year hundreds of amateur radio operators around the world participated, including 168 New Mexico hams and 21 New Mexico amateur radio clubs.

We are looking for hams — like yourself! — within each and every one of New Mexico's 33 counties to participate in the 2021 New Mexico QSO Party, whether for just a few convenient hours or for the entire event.

This is a super event for new and experienced hams alike. Operate from the comfort of your home.  Combine forces (safely) with hams in your club as a club activity or invite a group of friends to your shack for a multi-op operation.  Hit the road as a mobile station and activate multiple counties which create much needed -- and appreciated -- point multipliers for everyone who participates in the QSO Party.  Use this event as an opportunity to introduce a neighbor or friend to ham radio.  Or rally friends and club members to set up, Field Day style, as part of the special expedition category.

ATTENTION HAM CLUBS: The New Mexico QSO Party is a superb club-building activity, and there are two special awards available just for clubs.  The first is a plaque that will be awarded to the New Mexico club with the highest aggregate score submitted by its members. Another plaque will be awarded to the New Mexico Club whose members activate the highest aggregate number of New Mexico counties around the state. It doesn't matter what operating category your members participate in, or for how long; each entrant just needs to clearly mark their club name in their individual logs and your club will be automatically entered. Complete details in the New Mexico QSO Party rules.

This year's event is hosted by the Taos Amateur Radio Club.  Great-looking plaques will be awarded and participation certificates will be available for those desiring one.  Complete details, rules, prize information, and more can be found on the New Mexico QSO Party website at www.NewMexicoQSOParty.org

Are you planning to get on the air and operate from your home shack, as a mobile, or portable?  Even if tentative at this point, please visit www.NewMexicoQSOParty.org and let us know what county (or counties) you plan to operate from so we can list you on the NM QSO Party website’s activation table and interactive map.  Our goal is to have as many hams as possible operating from all of New Mexico counties during the event.

Please help spread the word about the 2021 New Mexico QSO Party.  With your help we look forward to all 33 counties being activated this year.

Thanks and 73,
Brian N5ZGT
New Mexico QSO Party website: www.NewMexicoQSOParty.org


1296 expedition operation

Floyd K5LA
 


WSMR 70-cm issue

Brian Mileshosky
 


Re: New Mexico QSO Party -- 3 weeks out!

Glenn
 

I plan to operate from Lincoln County at my home, possibly later in the afternoon some mobile efforts.
Heavy on the Six meter operations, CW & SSB.

Glenn Brazzel,  NQ5X
Ruidoso, NM


On Mon, Mar 22, 2021 at 9:28 PM Brian Mileshosky <n5zgt@...> wrote:
Greetings —

T-minus three weeks until New Mexico QSO Party action hits the HF, 6 meter, and 2 meter bands -- Saturday, April 10 from 8am-8pm MDT.

Do you plan to participate, even if just for a short while?

If so, please let us know what New Mexico county/counties you might operate from.  Even if only tentative at this point.  This information stokes participation and helps the event's dedicated mobile operators plan their best routes around the state to activate much needed counties for all to enjoy.

We will list your callsign on the New Mexico QSO Party's interactive activation map found at http://www.newmexicoqsoparty.org/wp/county-activation-plans/map.  Our goal is for each of New Mexico’s 33 counties to have as many hams as possible operating during the event.

This year's New Mexico QSO Party is sponsored by the Taos Amateur Radio Club.  Check out www.newmexicoqsoparty.org for more information, and please encourage a friend or your local amateur radio club to participate as well!

Thanks and 73,
Brian N5ZGT

On Mar 13, 2021, at 7:56 AM, Brian Mileshosky <n5zgt@...> wrote:

Greetings —

The 2021 New Mexico QSO Party takes place Saturday, April 10 from 8:00am MDT until 8:00pm MDT, and all Hams across New Mexico are invited to participate.  Amateur radio operators from across the United States -- and the world -- will be seeking New Mexicans on HF, 6 meters, and 2 meters during the event period, looking particularly to work hams in as many New Mexico counties as possible.  The Land of Enchantment will essentially be the "DX" on this day, making for a great time for all who participate.  Last year hundreds of amateur radio operators around the world participated, including 168 New Mexico hams and 21 New Mexico amateur radio clubs.

We are looking for hams — like yourself! — within each and every one of New Mexico's 33 counties to participate in the 2021 New Mexico QSO Party, whether for just a few convenient hours or for the entire event.

This is a super event for new and experienced hams alike. Operate from the comfort of your home.  Combine forces (safely) with hams in your club as a club activity or invite a group of friends to your shack for a multi-op operation.  Hit the road as a mobile station and activate multiple counties which create much needed -- and appreciated -- point multipliers for everyone who participates in the QSO Party.  Use this event as an opportunity to introduce a neighbor or friend to ham radio.  Or rally friends and club members to set up, Field Day style, as part of the special expedition category.

ATTENTION HAM CLUBS: The New Mexico QSO Party is a superb club-building activity, and there are two special awards available just for clubs.  The first is a plaque that will be awarded to the New Mexico club with the highest aggregate score submitted by its members. Another plaque will be awarded to the New Mexico Club whose members activate the highest aggregate number of New Mexico counties around the state. It doesn't matter what operating category your members participate in, or for how long; each entrant just needs to clearly mark their club name in their individual logs and your club will be automatically entered. Complete details in the New Mexico QSO Party rules.

This year's event is hosted by the Taos Amateur Radio Club.  Great-looking plaques will be awarded and participation certificates will be available for those desiring one.  Complete details, rules, prize information, and more can be found on the New Mexico QSO Party website at www.NewMexicoQSOParty.org

Are you planning to get on the air and operate from your home shack, as a mobile, or portable?  Even if tentative at this point, please visit www.NewMexicoQSOParty.org and let us know what county (or counties) you plan to operate from so we can list you on the NM QSO Party website’s activation table and interactive map.  Our goal is to have as many hams as possible operating from all of New Mexico counties during the event.

Please help spread the word about the 2021 New Mexico QSO Party.  With your help we look forward to all 33 counties being activated this year.

Thanks and 73,
Brian N5ZGT
New Mexico QSO Party website: www.NewMexicoQSOParty.org


New Mexico QSO Party -- 3 weeks out!

Brian Mileshosky
 

Greetings —

T-minus three weeks until New Mexico QSO Party action hits the HF, 6 meter, and 2 meter bands -- Saturday, April 10 from 8am-8pm MDT.

Do you plan to participate, even if just for a short while?

If so, please let us know what New Mexico county/counties you might operate from.  Even if only tentative at this point.  This information stokes participation and helps the event's dedicated mobile operators plan their best routes around the state to activate much needed counties for all to enjoy.

We will list your callsign on the New Mexico QSO Party's interactive activation map found at http://www.newmexicoqsoparty.org/wp/county-activation-plans/map.  Our goal is for each of New Mexico’s 33 counties to have as many hams as possible operating during the event.

This year's New Mexico QSO Party is sponsored by the Taos Amateur Radio Club.  Check out www.newmexicoqsoparty.org for more information, and please encourage a friend or your local amateur radio club to participate as well!

Thanks and 73,
Brian N5ZGT

On Mar 13, 2021, at 7:56 AM, Brian Mileshosky <n5zgt@...> wrote:

Greetings —

The 2021 New Mexico QSO Party takes place Saturday, April 10 from 8:00am MDT until 8:00pm MDT, and all Hams across New Mexico are invited to participate.  Amateur radio operators from across the United States -- and the world -- will be seeking New Mexicans on HF, 6 meters, and 2 meters during the event period, looking particularly to work hams in as many New Mexico counties as possible.  The Land of Enchantment will essentially be the "DX" on this day, making for a great time for all who participate.  Last year hundreds of amateur radio operators around the world participated, including 168 New Mexico hams and 21 New Mexico amateur radio clubs.

We are looking for hams — like yourself! — within each and every one of New Mexico's 33 counties to participate in the 2021 New Mexico QSO Party, whether for just a few convenient hours or for the entire event.

This is a super event for new and experienced hams alike. Operate from the comfort of your home.  Combine forces (safely) with hams in your club as a club activity or invite a group of friends to your shack for a multi-op operation.  Hit the road as a mobile station and activate multiple counties which create much needed -- and appreciated -- point multipliers for everyone who participates in the QSO Party.  Use this event as an opportunity to introduce a neighbor or friend to ham radio.  Or rally friends and club members to set up, Field Day style, as part of the special expedition category.

ATTENTION HAM CLUBS: The New Mexico QSO Party is a superb club-building activity, and there are two special awards available just for clubs.  The first is a plaque that will be awarded to the New Mexico club with the highest aggregate score submitted by its members. Another plaque will be awarded to the New Mexico Club whose members activate the highest aggregate number of New Mexico counties around the state. It doesn't matter what operating category your members participate in, or for how long; each entrant just needs to clearly mark their club name in their individual logs and your club will be automatically entered. Complete details in the New Mexico QSO Party rules.

This year's event is hosted by the Taos Amateur Radio Club.  Great-looking plaques will be awarded and participation certificates will be available for those desiring one.  Complete details, rules, prize information, and more can be found on the New Mexico QSO Party website at www.NewMexicoQSOParty.org

Are you planning to get on the air and operate from your home shack, as a mobile, or portable?  Even if tentative at this point, please visit www.NewMexicoQSOParty.org and let us know what county (or counties) you plan to operate from so we can list you on the NM QSO Party website’s activation table and interactive map.  Our goal is to have as many hams as possible operating from all of New Mexico counties during the event.

Please help spread the word about the 2021 New Mexico QSO Party.  With your help we look forward to all 33 counties being activated this year.

Thanks and 73,
Brian N5ZGT
New Mexico QSO Party website: www.NewMexicoQSOParty.org


Re: Order to vacate 420 to 430 MHz

KC7QY
 

Brian,

Thanks for the clarification. Since I can see WSMR from my shack window (at least the mountains on the west side anyway) I probably am a little more sensitive to what happens there than most. This certainly is a reminder that we are a secondary user on 70cm anyway.

Jim KC7QY


On Friday, March 19, 2021, 08:08:11 PM UTC, Brian Mileshosky <bpmiles@...> wrote:


Jim and everyone —

Please disregard (most) of the original note below.  While WSMR is indeed bringing about a capability that is sensitive around that part of the 70cm band, the FCC has *not* issued an order, in any shape or form, for anybody anywhere to vacate that part of the band by anytime. 

ARRL is working in real-time with FCC, WSMR and DOD’s spectral management office to understand the issue and jointly explore avenues to mitigate interference with minimal impact to the amateur radio community.  They are working to limit potential impacts only a few links on specific frequencies in specific areas adjacent to WSMR...not all occupants of an entire sub-band across a broad geographic area.

For now, it’s best to treat this as “for awareness only” and await official guidance from ARRL based on what they, WSMR, DOD, and FCC determine is and message the least impactful path forward.

The original messaging below has certain inaccuracies that shouldn’t be propagated further to prevent any sort of panic. Bill W5YEJ has since issued a correction stating that no such FCC order exists. 

73,
Brian N5ZGT 


On Mar 19, 2021, at 13:29, KC7QY <kc7qy@...> wrote:


FYI - From a message sent out by Bill W5YEJ on the repeater owners group.

"Per request of the U.S. Army the FCC had ordered that we vacate the 420 to
430 MHz segment of the 70cm band to make way for a new project on WSMR.
 
Area included: All Amateur transmitters within LOS of WSMR and any other
location that may cause interference on the Range. Sandia Peak, Manzano
Mtns, Capilla, Organ Pass, Benson Ridge, Long Ridge, Buck Mountain & El
Paso are all within the area of concern as well as the Tularosa Basin.
This list is not all inclusive and may need to be expanded if interference
is found at sources outside the LOS area.
 
Note that frequency coordination is primarily used to protect receivers
from unwanted signals. In this case the receiver(s) location is not
specified and so is a bit difficult to determine which, if any, other
locations may need to be included.
 
When: FCC has said we must vacate the band segment or turn off any
transmitters within the 420-430 range by May 31, 2021. This doesn't give
us a lot of time to rearrange channels.
 
What do you need to do? If you're operating transmitters (links or
repeaters) with the range of 420 to 430 please contact me ASAP so I can
verify the NMFCC database is up to date. I was officially notified of this
order on March 16th and have been trying to come up with a plan to move
transmitters. If you have suggestions please let me know. FYI, here is
the band plan from the ARRL:
 
70 Centimeters (420-450 MHz)
 
420.00-426.00 ATV repeater or simplex with 421.25 MHz video carrier
control links and experimental
 
426.00-432.00 ATV simplex with 427.250-MHz video carrier frequency
 
432.00-432.07 EME (Earth-Moon-Earth)
 
432.07-432.10 Weak-signal CW
 
432.10 70-cm calling frequency
 
432.10-432.30 Mixed-mode and weak-signal work
 
432.30-432.40 Propagation beacons
 
432.40-433.00 Mixed-mode and weak-signal work
 
433.00-435.00 Auxiliary/repeater links
 
435.00-438.00 Satellite only (internationally)
 
438.00-444.00 ATV repeater input with 439.250-MHz video carrier frequency
and repeater links
 
442.00-445.00 Repeater inputs and outputs (local option)
 
445.00-447.00 Shared by auxiliary and control links, repeaters and
simplex (local option)
 
446.00 National simplex frequency
 
447.00-450.00 Repeater inputs and outputs (local option)
 
I suggest we use the 433.00-435.00 and 438.00-440.00 segments to move
transmitters currently in the 420-430 segment. Paul Choc advises some of
his equipment may not go high enough to operate in the 438 MHz range and
has suggested we might use 430.00-430.975 MHz and 434.00-434.975 MHz (4 MHz
split) for some links. I am soliciting your comments on both of these
suggestions whether or not you are affected. I don't want to make
unilateral changes that will impact Amateur operation on the 70cm band for
so long as we are operating there (and I wont be around that long anyway).
 
I would prefer your comments in writing so I have a record but you are also
welcome to call me any time.
 
Bill, W5YEJ"


Jim KC7QY


Re: Order to vacate 420 to 430 MHz

Brian Mileshosky
 


Jim and everyone —

Please disregard (most) of the original note below.  While WSMR is indeed bringing about a capability that is sensitive around that part of the 70cm band, the FCC has *not* issued an order, in any shape or form, for anybody anywhere to vacate that part of the band by anytime. 

ARRL is working in real-time with FCC, WSMR and DOD’s spectral management office to understand the issue and jointly explore avenues to mitigate interference with minimal impact to the amateur radio community.  They are working to limit potential impacts only a few links on specific frequencies in specific areas adjacent to WSMR...not all occupants of an entire sub-band across a broad geographic area.

For now, it’s best to treat this as “for awareness only” and await official guidance from ARRL based on what they, WSMR, DOD, and FCC determine is and message the least impactful path forward.

The original messaging below has certain inaccuracies that shouldn’t be propagated further to prevent any sort of panic. Bill W5YEJ has since issued a correction stating that no such FCC order exists. 

73,
Brian N5ZGT 


On Mar 19, 2021, at 13:29, KC7QY <kc7qy@...> wrote:


FYI - From a message sent out by Bill W5YEJ on the repeater owners group.

"Per request of the U.S. Army the FCC had ordered that we vacate the 420 to
430 MHz segment of the 70cm band to make way for a new project on WSMR.
 
Area included: All Amateur transmitters within LOS of WSMR and any other
location that may cause interference on the Range. Sandia Peak, Manzano
Mtns, Capilla, Organ Pass, Benson Ridge, Long Ridge, Buck Mountain & El
Paso are all within the area of concern as well as the Tularosa Basin.
This list is not all inclusive and may need to be expanded if interference
is found at sources outside the LOS area.
 
Note that frequency coordination is primarily used to protect receivers
from unwanted signals. In this case the receiver(s) location is not
specified and so is a bit difficult to determine which, if any, other
locations may need to be included.
 
When: FCC has said we must vacate the band segment or turn off any
transmitters within the 420-430 range by May 31, 2021. This doesn't give
us a lot of time to rearrange channels.
 
What do you need to do? If you're operating transmitters (links or
repeaters) with the range of 420 to 430 please contact me ASAP so I can
verify the NMFCC database is up to date. I was officially notified of this
order on March 16th and have been trying to come up with a plan to move
transmitters. If you have suggestions please let me know. FYI, here is
the band plan from the ARRL:
 
70 Centimeters (420-450 MHz)
 
420.00-426.00 ATV repeater or simplex with 421.25 MHz video carrier
control links and experimental
 
426.00-432.00 ATV simplex with 427.250-MHz video carrier frequency
 
432.00-432.07 EME (Earth-Moon-Earth)
 
432.07-432.10 Weak-signal CW
 
432.10 70-cm calling frequency
 
432.10-432.30 Mixed-mode and weak-signal work
 
432.30-432.40 Propagation beacons
 
432.40-433.00 Mixed-mode and weak-signal work
 
433.00-435.00 Auxiliary/repeater links
 
435.00-438.00 Satellite only (internationally)
 
438.00-444.00 ATV repeater input with 439.250-MHz video carrier frequency
and repeater links
 
442.00-445.00 Repeater inputs and outputs (local option)
 
445.00-447.00 Shared by auxiliary and control links, repeaters and
simplex (local option)
 
446.00 National simplex frequency
 
447.00-450.00 Repeater inputs and outputs (local option)
 
I suggest we use the 433.00-435.00 and 438.00-440.00 segments to move
transmitters currently in the 420-430 segment. Paul Choc advises some of
his equipment may not go high enough to operate in the 438 MHz range and
has suggested we might use 430.00-430.975 MHz and 434.00-434.975 MHz (4 MHz
split) for some links. I am soliciting your comments on both of these
suggestions whether or not you are affected. I don't want to make
unilateral changes that will impact Amateur operation on the 70cm band for
so long as we are operating there (and I wont be around that long anyway).
 
I would prefer your comments in writing so I have a record but you are also
welcome to call me any time.
 
Bill, W5YEJ"


Jim KC7QY


Re: Order to vacate 420 to 430 MHz

KC7QY
 

Dan,

I afraid what is in the message is all that I know about it. The take-away for me is that if you deploy a system in that range then you are at risk of having to reconfigure your system if you do end up interfering.

Jim KC7QY


On Friday, March 19, 2021, 01:50:03 PM MDT, Daniel Fay <daniel.fay@...> wrote:


FYI -- I'm currently doing some mesh networking experiments with the LoRa waveform on 420-430MHz. This order shouldn't affect me because:

  1. I'm in the Albuquerque Far NE Heights area, so White Sands should be well past the radio horizon.
  2. The transmitters are sitting no higher than 2m above the ground.
  3. They are transmitting at a maximum of 1W, with antennas that have <3dBi of gain (they're HT duck antennas).
  4. The PSD is fairly low because it's spread spectrum (CSS with a bandwidth of at least 125KHz, and some slow (per-packet) FHSS in some cases as well).

If you think this order does apply to what I'm doing, let me know, and I'll change frequencies. The LoRa radios can operate anywhere in the 70cm band. 

Also, is this change permanent? I was considering eventually emplacing a few network nodes across the ABQ metro area to evaluate coverage.

Thanks,

Dan KG5VBY


Re: Order to vacate 420 to 430 MHz

Daniel Fay
 

FYI -- I'm currently doing some mesh networking experiments with the LoRa waveform on 420-430MHz. This order shouldn't affect me because:

  1. I'm in the Albuquerque Far NE Heights area, so White Sands should be well past the radio horizon.
  2. The transmitters are sitting no higher than 2m above the ground.
  3. They are transmitting at a maximum of 1W, with antennas that have <3dBi of gain (they're HT duck antennas).
  4. The PSD is fairly low because it's spread spectrum (CSS with a bandwidth of at least 125KHz, and some slow (per-packet) FHSS in some cases as well).

If you think this order does apply to what I'm doing, let me know, and I'll change frequencies. The LoRa radios can operate anywhere in the 70cm band. 

Also, is this change permanent? I was considering eventually emplacing a few network nodes across the ABQ metro area to evaluate coverage.

Thanks,

Dan KG5VBY

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