Date   

Re: 6M sporadic E

Bruce Draper
 

The 10 meter band was open till at least 0330Z, with lots of beacons, FT8, and SSB. 


On Dec 5, 2018, at 7:04 AM, Keith Morehouse <w9rm@...> wrote:

I had my band-monitoring SDR up on the 2nd computer screen and was tipped off by the big bunch of beacons.  I saw a couple of guys on FT8, all running version 1.9 or earlier, so I don't know who they were.  I've been doing MSK144 meteor scatter so I have V2RC5 running.  I also saw a few guys on SSB, but nobody CQing.  It doesn't appear anybody is really watching the prop indicators this time of year.

The CW window, which technically is still there, is usually empty unless it's a contest weekend or the opening is so good, the QRM level above .125 is bad.  With FT8 on the scene, who knows if the QRM level will ever be high again ;)

The opening started a little before 2300Z and was still going, by the looks of the beacons, at 2340Z when I went for dinner.  We are entering the secondary Es season, so there should be increasing activity.  Be aware that this is also the PRIMARY Es season south of the equator and it's not unknown to get good enough sporadic E up here in the northern hemisphere that we can link into the south Pacific or VK/ZL regions on 6.  With low sunspot counts, the likelihood of this (TEP) is lower, but it has happened.  VK/ZL was working trans-Pacific on 6 last evening, into South America (south of the equator).

-W9RM

Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO


Re: 6M sporadic E

n5epa.bob@...
 

I worked 10 stations on 6m SSB from 0055z to 0137z. There was a few more operators heard on 50.125 but I made no effort to work them there. Path rather broad from MS in the south to WI in the north. Not sure if the band opening continued as I shut down for a phone call and then the hungries.

73, Bob N5EPA




Re: 6M sporadic E

Keith Morehouse
 

I had my band-monitoring SDR up on the 2nd computer screen and was tipped off by the big bunch of beacons.  I saw a couple of guys on FT8, all running version 1.9 or earlier, so I don't know who they were.  I've been doing MSK144 meteor scatter so I have V2RC5 running.  I also saw a few guys on SSB, but nobody CQing.  It doesn't appear anybody is really watching the prop indicators this time of year.

The CW window, which technically is still there, is usually empty unless it's a contest weekend or the opening is so good, the QRM level above .125 is bad.  With FT8 on the scene, who knows if the QRM level will ever be high again ;)

The opening started a little before 2300Z and was still going, by the looks of the beacons, at 2340Z when I went for dinner.  We are entering the secondary Es season, so there should be increasing activity.  Be aware that this is also the PRIMARY Es season south of the equator and it's not unknown to get good enough sporadic E up here in the northern hemisphere that we can link into the south Pacific or VK/ZL regions on 6.  With low sunspot counts, the likelihood of this (TEP) is lower, but it has happened.  VK/ZL was working trans-Pacific on 6 last evening, into South America (south of the equator).

-W9RM

Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO


Re: 6m Es opening - 2300Z

John Klem
 

From what I could see, almost everyone on FT-8 was running 1.8/1.9.  Because I couldn't decode them with 2.0, which I switched to a couple of weeks ago...to keep up with the meteor scatter folks, who seem to be early adopters.  I saw one lone (non-local) station running 2.0, who was sending something like "CQ v2.0 77-bit", and I could actually decode.  I didn't see any replies.

I will be happy when I don't have to uninstall/install software just to switch modes.

I listened for awhile on 50.090 (is that really a CW calling frequency?) - nothing heard.

John AA5PR

On 12/4/2018 7:51 PM, WB2FKO wrote:
Was everybody on FT8?  If so, were there decode incompatibility problems with people using versions 1.9 and 2.0? 
WB2FKO

On Dec 4, 2018, at 5:13 PM, Ed <n5jeh@...> wrote:

Not a very strong opening down here in DM65. But working a few. Take any opening in late fall.

 

Ed N5JEH

 

Sent from Mail for Windows 10

 

From: Keith Morehouse
Sent: Tuesday, December 4, 2018 4:18 PM
To: nmvhf@groups.io
Subject: [nmvhf] 6m Es opening - 2300Z

 

Strong Es opening from DM58 to mid EM6/7/8 now.

1st good winter Es opening heard here this season

 

-W9RM


Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO

 

<C0E03DB3DF9D430386CC63E8BC40D205.png>


Re: 6m Es opening - 2300Z

Alan Shapiro
 

I worked 3 stations on SSB (50.125) and one on CW (50.099).
NM5S

On 12/4/2018 7:51 PM, WB2FKO wrote:
Was everybody on FT8?  If so, were there decode incompatibility problems with people using versions 1.9 and 2.0?
WB2FKO


Re: 6m Es opening - 2300Z

Mike WB2FKO
 

Was everybody on FT8?  If so, were there decode incompatibility problems with people using versions 1.9 and 2.0? 
WB2FKO

On Dec 4, 2018, at 5:13 PM, Ed <n5jeh@...> wrote:

Not a very strong opening down here in DM65. But working a few. Take any opening in late fall.

 

Ed N5JEH

 

Sent from Mail for Windows 10

 

From: Keith Morehouse
Sent: Tuesday, December 4, 2018 4:18 PM
To: nmvhf@groups.io
Subject: [nmvhf] 6m Es opening - 2300Z

 

Strong Es opening from DM58 to mid EM6/7/8 now.

1st good winter Es opening heard here this season

 

-W9RM


Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO

 

<C0E03DB3DF9D430386CC63E8BC40D205.png>


Re: 6m Es opening - 2300Z

Ed
 

Not a very strong opening down here in DM65. But working a few. Take any opening in late fall.

 

Ed N5JEH

 

Sent from Mail for Windows 10

 

From: Keith Morehouse
Sent: Tuesday, December 4, 2018 4:18 PM
To: nmvhf@groups.io
Subject: [nmvhf] 6m Es opening - 2300Z

 

Strong Es opening from DM58 to mid EM6/7/8 now.

1st good winter Es opening heard here this season

 

-W9RM


Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO

 


6m Es opening - 2300Z

Keith Morehouse
 

Strong Es opening from DM58 to mid EM6/7/8 now.
1st good winter Es opening heard here this season

-W9RM

Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO


2nd VHF Super Confernece: Call for Papers/Presentations #vhf #uhf #antenna

Robin Midgett
 

Call for Papers and Presentations for the second Super VHF Conference, April 26-28, 2019, in Sterling, VA, near Washington, DC.  

The the second Super VHF Conference is jointly sponsored by Packrats, NEWS Group, and SVHFS, and Hosted by the Grid Pirates Contest Group and Directive Systems and Engineering


details at http://vhfsuperconference.com/


Presentations or papers are welcome on VHF, UHF, microwaves, and higher.  All aspects welcome, technical and non-technical - operating, contesting, homebrewing, roving, software, EME, surplus, antennas, test equipment, amplifiers, SDR, 47 GHz superregen, whatever.  Your winter project might be a good candidate - take some pictures.


N2CEI and W1GHZ will be coordinating the proceedings book and CD.


submissions and questions to:

conferencepapers@...


New Mexico TechFest -- Call for Presentations

Brian Mileshosky
 

Greetings —

The fifth annual New Mexico TechFest, an ARRL-sanctioned operating specialty event organized by Rocky Mountain Ham Radio - New Mexico, will take place Saturday, February 23, 2019.  TechFest features a day of quality presentations and demonstrations provided by some of New Mexico and Colorado’s leading technical hams on a variety of emerging and relevant topics within amateur radio.  The event’s purpose is to help expand attendees’ technical knowledge, facilitate collaboration, and encourage the discussion of new ideas with one another.

TechFest is open to all interested hams and will occur at the New Mexico Veterans’ Memorial Event Center located at 1100 Louisiana Blvd SE, Albuquerque, NM 87108.  Admission is $10.  Online registration will open the week of January 6, when the event’s presentation lineup is announced.

Presentation-related prizes will be drawn throughout the event. Refreshments including coffee, water, and light snacks will be available. Optional lunch, catered by local small business, will be available at an additional cost.

*** CALL FOR TECHFEST PRESENTATIONS, POSTERBOARDS, AND DEMONSTRATIONS *** The New Mexico TechFest seeks presentations, posterboards, and demos on emerging and relevant amateur radio technical topics, techniques, and applications.   If you’ve been working on a special project, are researching a technical topic, or have discovered or adopted a technology or technique that you’re applying within amateur radio, TechFest is a great venue to share your knowledge with the amateur radio community in a casual and friendly environment.  Presentations will generally be 50 minutes in total length.  Shorter posterboard talks and demos will also occur throughout the day.  AC-powered tables will be provided to facilitate presentations and demos.  Hams interested in providing a presentation, posterboard, or demonstration are asked to submit a summary/abstract of their proposed topic for consideration by January 1st. Visit the New Mexico TechFest website for submission details and key dates.

Additional details about the New Mexico TechFest, for both attendees and potential presenters, can be found at http://www.rmham.org/wordpress/new-mexico-techfest  A printable event flyer for posting on ham listserves, your club’s website, or your club’s newsletter is attached.

We hope to see you at TechFest 2019.

73,
Brian N5ZGT



Damage to LMR-type coax - a lesson to remember

Keith Morehouse
 

This is certainly not a new discovery, but it's good to re-visit certain things once in a while.  One of the problems with using any foamed or micro-porous Teflon dielectric coax cable (like LMR and other modern, stiff, low-loss cable) is the hazard of having the center conductor push through the relatively soft dielectric when under temperature extremes or with rough handling.  Here is an example.

I have numerous 20' lengths of LMR-400 cable, terminated with crimp-on N connectors that were commercially manufactured.  You used to be able to get these things surplus on EBay, complete with test report and sealed in plastic for $10-15.  They were good for jumpers and anything else that didn't move too much.  If you had too much radial motion, the connectors would break off after a while.  A couple weeks ago, after sorting through a jumble of RF cables used for various things (roving, portable op's, ect), I came across one 20 foot LMR-400 unit that had a loose crimp connector.  I went ahead and cut off the old connector and replaced it with a nice, new-out-of-the-bag Andrew two-piece compression design and tossed it aside for test.  This morning, I got around to testing it (no use having a network analyzer siting on the test bench if you don't use it to test things...) and found it had God-awful return loss (bad VSWR).  Of course, I figured the connector had been installed improperly, but after disassembly, the connector looked fine.  Further testing showed no change to the return loss when actively pushing and pulling on the partially disassembled end.  Hmmm - maybe it's the OTHER end, so I punched up the TDR routine on the analyzer to try and find the fault.  Long story short, the fault ended up being about 400mm BEHIND the connector I replaced.  You can see why in this picture.

IMG_20181107_141517465.jpg

You can see that the center conductor has moved almost an entire diameter into the dielectric, but was not yet shorting.  The interesting part is there was NO OBVIOUS damage to the coax outer cover - no crimp marks or crush marks - only a few scratches.  I assume it was smashed under some large weight or run over by a vehicle or, maybe stepped on or subjected to less-then-minimum bend radius after laying in the hot desert sun.  Sometimes, you can see a mark from a zip-tie on the cable, but not here.  Whatever it was, the return loss was approaching 5 dB several places between 30 and 1500 MHz (and greater then 20 dB in the 432 MHz band).

Cutting off 18" and re-attaching the same connector gave me a cable assembly with >25 dB return loss through 1500 MHz, with insertion loss of approx 0.2 dB at 50 MHz and 0.5 dB at 432.  The take-away from this lesson is to always remember how unforgiving some high-performance, low loss RF cables can be when abused - even if there is no sign.  Pretty much the only way to track down this type of fault is with TDR techniques.  BTW, differentiating between the reference plane and the internal conductor attachment point of an N connector using a HP network analyzer is not a problem - there's plenty of room in there.

-W9RM

Keith J Morehouse
Managing Partner
Calmesa Partners G.P.
Olathe, CO


Re: 2 meter transverter up for grabs...

redarlington
 

It's all yours, Erik.     We just have to figure out how to get it to you.  Email me off list and we'll make arrangements.

-Bob

On Tue, Oct 23, 2018 at 10:47 PM Erik Nelson <erik.nels0n99@...> wrote:
Bob, 

If it's not spoken for I'm interested.

 73,
  - Erik, KE5ZBG

On Tue, Oct 23, 2018, 14:54 redarlington <rdarlington@...> wrote:
Hi guys,

I have a 2 meter transverter (28MHz IF) up for grabs if anybody needs one.  It's the current offering from transverters-store.com with the internal attenuator board.   Power cable with Anderson power pole attached.  Factory assembled.    And best of all, free.    I just installed an internal 2 meter module in my rig so it's surplus to my needs.

Pickup in Los Alamos or we can meet up sometime in Santa Fe.  Just let me know and we'll go from there.

Bob - N3XKB


Re: 2 meter transverter up for grabs...

Erik Nelson
 

Bob, 

If it's not spoken for I'm interested.

 73,
  - Erik, KE5ZBG

On Tue, Oct 23, 2018, 14:54 redarlington <rdarlington@...> wrote:
Hi guys,

I have a 2 meter transverter (28MHz IF) up for grabs if anybody needs one.  It's the current offering from transverters-store.com with the internal attenuator board.   Power cable with Anderson power pole attached.  Factory assembled.    And best of all, free.    I just installed an internal 2 meter module in my rig so it's surplus to my needs.

Pickup in Los Alamos or we can meet up sometime in Santa Fe.  Just let me know and we'll go from there.

Bob - N3XKB


2 meter transverter up for grabs...

redarlington
 

Hi guys,

I have a 2 meter transverter (28MHz IF) up for grabs if anybody needs one.  It's the current offering from transverters-store.com with the internal attenuator board.   Power cable with Anderson power pole attached.  Factory assembled.    And best of all, free.    I just installed an internal 2 meter module in my rig so it's surplus to my needs.

Pickup in Los Alamos or we can meet up sometime in Santa Fe.  Just let me know and we'll go from there.

Bob - N3XKB


Re: Congrats Duffey

Ed
 

Congratulations Duffey. You are so deserving of that adward.

 

Ed N5JEH

 

Sent from Mail for Windows 10

 

From: KC7QY
Sent: Friday, October 19, 2018 9:50 PM
To: NM VHF
Subject: [nmvhf] Congrats Duffey

 

Duffey,

 

Congratulations on NM Ham of the Year, announced tonight at the Socorro Hamfest, NM State Convention banquet. 

 

Jim KC7QY

 


Re: Congrats Duffey

Mike WB2FKO
 

Congratulations indeed! And well deserved. Will see you in Socorro on Saturday. 
Mike WB2FKO

On Oct 19, 2018, at 8:49 PM, KC7QY <kc7qy@...> wrote:

Duffey,

Congratulations on NM Ham of the Year, announced tonight at the Socorro Hamfest, NM State Convention banquet. 
 
Jim KC7QY


Re: Congrats Duffey

Bruce Draper
 

Wow! Congrats, Duffey!


On Oct 19, 2018, at 8:52 PM, James Duffey <JamesDuffey@...> wrote:

Thanks Jim!

James Duffey KK6MC
Cedar Crest NM

On Oct 19, 2018, at 20:49, KC7QY <kc7qy@...> wrote:

Duffey,

Congratulations on NM Ham of the Year, announced tonight at the Socorro Hamfest, NM State Convention banquet. 
 
Jim KC7QY


Re: Congrats Duffey

James Duffey
 

Thanks Jim!

James Duffey KK6MC
Cedar Crest NM

On Oct 19, 2018, at 20:49, KC7QY <kc7qy@...> wrote:

Duffey,

Congratulations on NM Ham of the Year, announced tonight at the Socorro Hamfest, NM State Convention banquet. 
 
Jim KC7QY


Congrats Duffey

KC7QY
 

Duffey,

Congratulations on NM Ham of the Year, announced tonight at the Socorro Hamfest, NM State Convention banquet. 
 
Jim KC7QY


6 mtr bbq presentations

Bruce Draper
 

Some good, some not (I’m sure they were much better in person). Here they are:


73,
   Bruce 

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