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Chopmist Hill & WW2 radio history
A great historic read about the WW2 top secret radio listening post located at Chopmist Hill, RI. As a teaser, they have never really explained all they could hear. |
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Re: Willmar Foxhunt
I meant grab my 2m 4 ele end mount beam. 73 |
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Re: Willmar Foxhunt
On Wed, Dec 6, 2023 at 07:29 PM, N0QBH Mike Berg wrote:
I use a frequency offset attenuator from Byonics in conjunction with a homebrew 2 element tape measure Yagi. Tony - WD0HXV has 3 element Yagi with the attenuator already installed on it. If he isn't going to be part of the hunt, I'm sure he would lend it to you and show you how to use the offset attenuator. |
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National Traffic System 2.0 Update
#arrl
#netcontrol
#winterfieldday
Opt-In Page Confusion
Several individuals have recently reported problems subscribing to?The NTS Letter?on their ARRL profile page at?. Specifically, the page displays only those electronic publications and listservs to which the member is currently subscribed. One must click on the "EDIT" button to see the entire list of choices to opt into. We're happy to report that the language on the profile page has been updated and the instructions are clearer. It now reads, "Please click 'EDIT' to see?all?email subscription options." Remember -- to reach this page, click on "Hello <name>" at the very top of the ARRL home page, followed by "Communication | Opt In/Out" in the left-hand column on the resulting page. NTS 2.0: Update
A new training video has been added to the??website under the "Training and Documentation/Special Topics" tab. This video and PowerPoint presentation give instructions on the use of the APRS-NTS Gateway mentioned in last month's newsletter, and is the first of what will become a series of training videos on this site. If any folks out there have experience in creating, editing videos etc. and would like to work with us, we are interested in hearing from you. Coming Soon -- Web-based Message Origination "Portal" Platform for Public Use The NTS 2.0 Access & Delivery Methods working group has made good progress on a web-based message origination "portal" platform for public use. A mockup was demonstrated recently to the A&DM group by one of its members. A "soft launch" will consist of publicizing the portal to the amateur community; and later, to the public. Dedicated traffic handler volunteers will be recruited to maintain regular "schedules" to check the platform for outbound traffic. Note: Messages will?never?be sent without human intervention. Each message will be inspected by a volunteer traffic handler to ensure that its content is appropriate (e.g., "clean" language, no commercial content) before accepting it for origination. In addition, anti-spamming rules have been incorporated into the portal's design. We'll have more information on this project in a later?NTS Letter. NTS-ARES Collaboration -- One Section's Recent Experience
NTS and ARES are two organizations of ARRL with similar yet separate missions. The relationship between these two organizations varies greatly from Section to Section. Leadership in the Eastern Massachusetts Section (EMA) has been working over the past year to develop synergies between NTS and ARES to jointly increase the capabilities that they can offer to served agencies. This team includes the EMA SM, SEC, ASEC, STM, ASTM and NTS-ARES Liaison, and others, and meets every 4-6 weeks. One area of focus that the team has identified is the ability of NTS to take some of the load off ARES by handling Health and Welfare traffic in and out of a disaster area. The group is also working on materials for Simulated Emergency Tests (SET) that would provide increased interaction between NTS and ARES. Eastern Massachusetts held its annual SET on November 11. During this event, several ARES groups across the Section set up, and nets were held on HF and VHF. Stations checked into ARES nets and provided reports on which ATIS (Automatic Terminal Information Service) stations they could hear. NTS also held a VHF net and an HF digital net. Stations participating in the SET were also encouraged to use their own station capabilities to send an NTS radiogram to the Section Traffic Manager via one of the NTS nets, and another radiogram to the Section Manager identifying which activities the station participated in during the event. In addition, the Section Manager sent radiograms having a precedence of TEST PRIORITY to Section leadership and requesting an immediate response describing their SET participation. This past year, as part of the NTS 2.0 project, NTS developed a standardized methodology for sending ICS-213s encapsulated in radiograms for verbatim delivery in ICS-213 format at the remote end. During this SET, ICS-213s were sent via NTS, exercising this methodology to three other Sections. The volume of traffic passed during the SET introduced some challenges which were identified, leading to several lessons learned, many of which are reflected in current NTS operations. The first was the importance of placing operators in specific individual roles during an event. A net should have a primary net control as well as a backup net control. This allows the primary Net Control Station to tend to other issues as they arise and to have the ability and time to survey the rest of the activities during the SET. Nets should have at least one liaison station, whose responsibility is to take traffic from that net to other nets. Nets should introduce failures into their practice to develop procedures for recovering from those failures and becoming more resilient. This is especially true for technology challenges with the newer digital modes and applications, which are much "younger" than CW and voice nets. --?Eastern Massachusetts Assistant Section Traffic Manager Michael Ford, WZ0C Training Can Be Fun!
Does your net have a person who occasionally checks in, but is hesitant to take that first message or originate their first radiogram? Perhaps they're still a little unsure how to do it or are afraid to mess up in front of everyone. Consider emulating what one local traffic net does. The Net Control Station initially asks for stations with traffic to check in, but also for stations who wish to receive a training message. The message is sent from one of the more experienced traffic handlers -- usually the net control. It consists of a simple request like, "Please respond with the date of birth and birthplace of Hiram Percy Maxim," or something similar. It's a great way to help build a newcomer's confidence without throwing them into "the deep end" with an actual message. Arr, Matey! Ready for a Treasure Hunt?
Who says handling formal traffic?always?must be serious business? Our esteemed Chief Executive Officer David Minster, NA2AA, who was once an active traffic handler, recently suggested a fun exercise for the NTS community: "Let's hold a treasure hunt!" Contestants will respond to clues contained in the initial instructions from an?NTS Letter?to which they will respond via radiogram to a "judge." The judge will, in turn, respond via radiogram with the next clue to the puzzle. You will have to be patient (like any good treasure hunter) and follow this path for at least three or four cycles. If at any point your answer is incorrect, you'll be asked to try again. If you are clever, good at following directions, and not afraid to send and receive a few radiograms, then you'll have a good chance at success. We're still working out the details, but a crack team of NTS 2.0 participants recently conducted a small trial run and the results were encouraging. While we can't promise that the winner will receive a chest full of pieces of eight*?or a multi-kilobuck, state-of-the-art HF transceiver, there?will?be some "trinkets" awarded at the end of the competition. Plus, all participants will receive honorable mention in?The NTS Letter.
* Pieces of eight are historical Spanish dollar coins minted in the Americas from the late 15th century through the 19th century. Made of silver, they were in nearly worldwide circulation by the late 19th century and were legal currency in the United States until 1857. Traffic Trivia
Trivia buffs, join a growing group of traffic handlers who play trivia by finding the trivia question of the week on the?ntstrivia.com?website and sending a radiogram with the answer to website owner -- and North Texas Section Traffic Manager -- Aaron Hulett, K8AMH. Follow instructions on the site. It's fun and generates traffic for NTS. Winter Field Day is Coming
Here's an idea to generate more radiograms to liven up your traffic nets! Winter Field Day (WFD) is coming January 27-28, 2024. While WFD is not an ARRL event, it's a fun winter activity that's growing in popularity every year. Many ARRL affiliated clubs participate in the event. ARRL's summer Field Day event grants bonus points when a station originates, relays, receives, or delivers messages during the Field Day period; however, there's no mention in the Winter Field Day rules about bonus points for handling radiogram traffic. But why should that stop you from generating messages for the training and fun of it? Encourage your WFD club effort to send formal radiogram traffic to your local Emergency Coordinator, Section Emergency Coordinator, Section Traffic Manager and/or Section Manager, including some details of your winter operation:
The Winter Field Day rules can be found at? Symbol Rate Change
You no doubt heard that the FCC recently voted to remove the symbol or baud rate restriction on HF bands and replace it with a 2.8 KHz bandwidth limitation for digital communications. Up until now US amateurs have been limited to a somewhat slow 300 baud rate on HF frequencies. With this change, any baud rate will be permitted within the 2.8 KHz bandwidth. The FCC acknowledged "the amateur radio community can play a vital role in emergency response communications but is often unnecessarily hindered by the baud rate limitations in the rules." FCC also stated, "we agree with ARRL that a 2.8 kilohertz bandwidth limitation will allow for additional emissions currently prohibited under the baud rate limitations while providing sufficient protections in the shared RTTY/data sub bands." What does this mean for NTS and ARES? For one thing, speed. Speed is of course of utmost importance in transmission of disaster and other emergency traffic, whether it is agency traffic that must get to destination within 30 minutes or a very large number of welfare messages. A PACTOR 4 modem moves messages at approximately twice the speed of PACTOR 3, which is currently in use by all DTN hub stations today. While PACTOR 4 modems are somewhat expensive, it is expected that software modems will soon become available to closely match the higher speeds, giving access to more digitally equipped stations. It is also anticipated that with the faster speeds more stations will be able to share a frequency where one can send traffic and exit a frequency very quickly. Remembering that DTN (formerly NTSD) has evolved from its earlier days of AMTOR and PACTOR 1 to PACTOR 3 and now VARA, we can look forward to its further evolution as newer technology is developed. This change from symbol rate to bandwidth restrictions will allow flexibility for the development of new modes. In addition to no longer requiring prompt action (which the Amateur Radio Service has always received) on the part of officials when approving recent requests by ARRL and others for temporary waiver of the baud rate limitation during and immediately after natural disasters and other emergencies, delays associated with the entire waiver preparation, application, and dissemination process will now be completely eliminated. Digital operators can be already equipped and trained in the use of newer modes when disaster strikes, and time can mean safety of life and property, as well as peace of mind to those whose loved ones are in a disaster area. We can be grateful to ARRL for its persistence and to the FCC for making possible what we think is positive change. It is important to note that this change is not currently in effect. The FCC states it will take effect 30 days after the new ruling is published in the Federal Register. |
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Re: Willmar Foxhunt
Do you use an attenuator in series with your receiver(s)? If so, what type or kind? |
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Example - How to make packet contacts for pen pals
Here's a copy of some exploring I did in the metro today using packet radio on the 145.670 freq. ? Connecting... Connected To WILMAR ###CONNECTED TO NODE WILMAR(W0SW) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c mnrck2 ###LINK MADE ###CONNECTED TO NODE MNRCK2(NY9D-11) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c mnmpls ###LINK MADE ###CONNECTED TO NODE MNMPLS(WDOHWT-10) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? j s K0LAV-6 WG0A-1* WG0A-7 KC0NPA-10 NY9D-11 WD0HWT-4 K0SHF* N0YNT* K1LEO* N0TJN KF9CP KF9CP-1 W0YC MNRCK2 WILMAR N0QBH-3 N0QBH-2 ENTER COMMAND: B,C,J,N, or Help ? bye Disconnected from WILMAR Connecting... Connected To WILMAR ###CONNECTED TO NODE WILMAR(W0SW) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c mnrck2 ###LINK MADE ###CONNECTED TO NODE MNRCK2(NY9D-11) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c mnmpls ###LINK MADE ###CONNECTED TO NODE MNMPLS(WDOHWT-10) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c kf9cp-1 ###LINK MADE [EASYTERM-0.49B] ? There are 0 available message(s) of 10. ? ENTER COMMAND: B,K,L,R,S or Help > s all Enter Title (>30 symbols): Hello from outstate Enter Message Text (end with /EX or CTRL+Z): Name is Mike, QTH near Spicer, MN. We recently got access to the metro packet system and I'm exploring. The MNRCK2 node filled the gap between WILMAR and the rest of the world. Our club packet mailbox is with the WILMAR node and is W0SW-1. We hope to get some "retro" interest in packet going here. 73 Mike N0QBH /ex Message #12 Size: 313 saved! ? ENTER COMMAND: B,K,L,R,S or Help > l MSG# ST FROM TO DATE TIME SIZE TITLE 12 PN N0QBH ALL 06-12-23 07:28 313 Hello from outstate ? ENTER COMMAND: B,K,L,R,S or Help > bye Bye-Bye! ###DISCONNECTED BY KF9CP-1 AT NODE MNMPLS ###DISCONNECTED BY MNMPLS AT NODE MNRCK2 ###DISCONNECTED BY MNRCK2 AT NODE WILMAR Disconnected from WILMAR Connecting... Connected To WILMAR ###CONNECTED TO NODE WILMAR(W0SW) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c mnrck2 ###LINK MADE ###CONNECTED TO NODE MNRCK2(NY9D-11) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? j l KF9CP > BEACON 00/21/00 01:30:54 KF9CP-1 > MBX 00/21/00 01:30:54 W0SW > ID 00/21/00 01:38:27 PBBS* > BEACON 00/21/00 01:46:11 VIA *MPLSDN KF0KAA* > BEACON 00/21/00 01:55:16 VIA MNFAIR,*MPLSDN,MNISAN,ICARES W0REA-12 > BEACON 00/21/00 02:04:03 AJ0O-7 > ID 00/21/00 02:09:13 K1LEO* > BEACON 00/21/00 02:15:36 VIA *MNFAIR N0TJN > BEACON 00/21/00 02:20:40 WG0A-1* > MAIL 00/21/00 02:23:47 VIA *MPLSDN W0YC > ID 00/21/00 02:25:05 WG0A-7 > BEACON 00/21/00 02:25:20 KC0NPA-10 > BEACON 00/21/00 02:25:54 WD0HWT-4 > ID 00/21/00 02:26:11 K0SHF* > BEACON 00/21/00 02:26:41 VIA *WD0HWT-4 WILMAR > N0QBH-4 00/21/00 02:29:01 N0QBH-3 > MNRCK2 00/21/00 02:29:01 ENTER COMMAND: B,C,J,N, or Help ? c mplsdn ###LINK MADE ###CONNECTED TO NODE MPLSDN(WD0HWT-4) CHANNEL A ENTER COMMAND: B,C,J,N, or Help ? c wg0a-1 ###LINK MADE [BPQ-6.0.24.16-B2FWIHJM$] Please enter your Name > Mike Welcome Mike. Latest Message is 1980 Please leave a message while you're here. Thanks. Please enter your Home BBS using the Home command. You may also enter your QTH and ZIP/Postcode using qth and zip commands. N0QBH de WG0A> home w0sw-1 Please enter HA with HomeBBS eg g8bpq.gbr.eu - this will help message routing HomeBBS is W0SW-1 N0QBH de WG0A> sb all Enter Title (only): Hello from outstate Enter Message Text (end with /ex or ctrl/z) We recently got access to the metro via MNRCK2 and I am out exploring. Station here is a Yaesu FT-2600, NinoTNC, Pi400 to a big screen tv. I run a BPQ node near Spicer part time, shared with APRS duty in the day. Our local mailbox is part of the WILMAR node and accessed by W0SW-1. Drop a note if you are inclined. 73, Mike N0QBH /ex Message: 1981 Bid: 1981_WG0A Size: 336 N0QBH de WG0A> l 1981 06-Dec BN 336 ALL N0QBH Hello from outstate 1979 06-Dec B$ 37670 DX @WW I0OJJ The ARRL Contebye Disconnected from WILMAR |
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Re: ARRL 10M Contest
#contesting
#arrl
News, Press Releases, and Special Interest ? With the ARRL 10-Meter Contest coming up, Bob Cox, K3EST, wrote some helpful hints for success suited for West Coast contesters: ? "For part timers, here is more detailed advice on band openings. Looking at 10-meter logs for 2012-2015 (roughly corresponding to where we are in the sunspot cycle - Ed.), here are some data. ? "EUROPE: The opening each day is in the morning and is short. Sunset in London is 3:52 pm their time. That equals 1552z. The band will be open longer into their twilight but mostly finished to Europe about 1730z. If you are interested in [making] some EU contacts, the time to be beaming in that direction is between 1530-1730z. ? "JA/ASIA: From the start of the contest, Asia will be workable for a while. Then in the afternoon, JA/Asia will peak about 2300z to 0130z. ? "USA/NA: Almost anytime. ? "SA: The best time to work SA is in the afternoon. ? "In the evening after about 0230z, you can work Ws mostly in the west. ? "Ten meters is a fantastic teacher of propagation. Short skip, E-skip, and F2 propagation are all happening sometime over the contest weekend. As a contester, you just hear a guy and work him. You don't think about the mode of propagation; however, after the contest, you can read up on the various paths you may have encountered. ? "The sun is the great controller of 10m propagation. In spite of a CME hitting during the recent CQ WW Contest, 10 meters was still open to Europe and Asia. With the SFI predicted to be 145 during the 10-meter contest, that will help overcome potential solar problems. ? "Even a small antenna system will prove enough to make many QSOs. Take advantage of 10 meters during this sunspot peak. Even QRP stations can make lots of QSOs. ? "Summits on the Air (SOTA) is running a 10m Challenge in 2024. Solar Cycle 25 has started to offer regular good conditions for DX on the higher bands, so it is hoped that portable summit operators can take advantage during 2024. Some predictions indicate the peak of the cycle may occur during the summer of 2024. We encourage activators to consider 28MHz for their summit operations in 2024. |
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Willmar Foxhunt
On short notice, I'd like to do one more foxhunt this coming Saturday 12/09/23.
The fox will be "on the air" from 12pm to 3pm located somewhere within the city limits of Willmar and will be located on public property. The fox frequency is 146.565 mHz. I'm going to forego the group meeting before the foxhunt. I will announce the fox going live on the 444.800+ repeater (tone 146.2) as well as serve as net control, and offer any help as needed.? With any luck the weather should be nice since the 10 day WX outlook is favorable for this time of year.? ? If you have any questions feel free to email me at w0aye.mn@... |
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ARRL 10M Contest
#contesting
#arrl
Objective: For Amateurs worldwide to exchange QSO information with as many stations as possible on the 10 meter band.
?
Dates:
?
Second full weekend of December. Starts 0000 UTC Saturday; runs through 2359 UTC Sunday (December 9-10, 2023)
?
Click Here for the Complete ARRL 10-Meter Contest Rules (PDF)
?
For contest information contact contests@... or (860) 594-0232
?
?Log Submission Deadline:
?
Logs are due within SEVEN (7) days after the event is over. Logs may be submitted either online or via mail, but electronic Cabrillo logs are the preferred method. Electronic logs must be submitted via our web app at contest-log-submission.arrl.org. Paper logs must be postmarked by the log submission deadline.
?
Logs that have been submitted electronically are listed on the ARRL Logs Received page. Click the contest name to see a list of submitted logs sorted by call sign and club name.
?
Online Log Submission - Cabrillo formatted logs must be uploaded via our web app at contest-log-submission.arrl.org
?
Submitting Paper Logs By Mail - Be sure to mail your completed Summary Sheet and Log Sheets postmarked before the log submission deadline.
?
Paper Entry Forms:
?
10 Meter Contest Summary Sheet
?
10 Meter Contest Log Sheet
?
?Send completed Summary Sheets and logs to:
ARRL - 10 Meter Contest, 225 Main St, Newington, CT 06111.
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If submitting a paper log, it is strongly suggested you use a delivery method that offers a tracking number.
?
If you wish to convert your log into a Cabrillo formatted log for electronic submission, visit www.b4h.net/cabforms/ and select the event of interest. You can input your log data which will be converted to a Cabrillo formatted log for you (it will generate a log and return it to you), and then you can in turn submit your Cabrillo log online via the web app at contest-log-submission.arrl.org/.
?
Awards:
?
Certificates will be awarded in the following categories:
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The highest-scoring single-operator station (in each category) from each ARRL/RAC Section, Mexican State and DXCC country.
Top multioperator entries in each ARRL Division, Canada, Mexico and each continent.
Additional certificates will be awarded as participation warrants.
Printable certificates will be downloadable from contests.arrl.org/certificates.php. |
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Tip for using Kantronics KPC-3+
There are a number of Emergency Services packet radio kits amoungst the members and I've found a couple of easy setting changes to make it work much better. The default Putty keyboard setting for Backspace needs to be changed. ? |
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Re: MNRCK2 - the new path
Packet radio local connection example Willmar to Minneapolis using the new 145.67? MNRCK node.
?
Here I'm connecting to WILMAR, then using it to connect to MNRCK2, then the MNMPLS node down in Minneapolis.
Once connected and seeing the node's command line, I send a j to see callsigns heard by that node.
Then I send a n to find out what other nodes it has heard.
Then I disconnected.
Otherwise, I could try connecting to calls and see where it goes...
?
c wilmar
?
Connecting...
Connected To WILMAR
###CONNECTED TO NODE WILMAR(W0SW) CHANNEL A
ENTER COMMAND: B,C,J,N, or Help ?
?
c mnrck2
?
###LINK MADE
###CONNECTED TO NODE MNRCK2(NY9D-11) CHANNEL A
ENTER COMMAND: B,C,J,N, or Help ?
?
c mnmpls
?
###LINK MADE
###CONNECTED TO NODE MNMPLS(WDOHWT-10) CHANNEL A
ENTER COMMAND: B,C,J,N, or Help ?
j
KC0NPA-10? 04/01/19 18:45:24
WG0A-7? ? ?04/01/19 18:49:32
W0YC? ? ? ?04/01/19 18:49:39
N0TJN? ? ? 04/01/19 18:50:23
MPLSDN? ? ?04/01/19 18:54:12
KF0DEK? ? ?04/01/19 18:54:13
N0KMR? ? ? 04/01/19 18:54:51
WG0A-1*? ? 04/01/19 18:54:57
K1LEO? ? ? 04/01/19 18:55:02
PBBS*? ? ? 04/01/19 18:55:48
WD0HWT-4? ?04/01/19 18:56:39
K0SHF*? ? ?04/01/19 18:57:10
KF0DEK-1*? 04/01/19 18:57:23
MNRCK2? ? ?04/01/19 18:57:32
W9GM-8*? ? 04/01/19 18:57:57
N0QBH-8? ? 04/01/19 18:57:59
ENTER COMMAND: B,C,J,N, or Help ?
n
C-7? ? ? ? (KC0NPA-10) 03/10/19 05:12:07
MNROC2? ? ?(K0LAV-7)? ?03/25/19 07:30:40
MNBRT? ? ? (KC0GAN)? ? 03/28/19 19:04:37
MNWASH? ? ?(K0LAV-2)? ?03/28/19 19:09:02
WIRVFL? ? ?(W0REA-12)? 03/28/19 19:35:15
MNWBL? ? ? (K0LAV-4)? ?03/28/19 19:37:40
N0TCR7? ? ?(MNCCC7)? ? 03/29/19 17:10:14
MNASK? ? ? (W0ICR-5)? ?03/29/19 18:54:39
MNROCK*? ? (K1LEO)? ? ?03/30/19 21:20:44
WIBAYC? ? ?(K0LAV-6)? ?03/31/19 21:17:01
N0YNT-7*? ?(N0YNT)? ? ?04/01/19 08:46:30
MNISAN? ? ?(K0LAV-1)? ?04/01/19 17:45:46
WILMAR? ? ?(W0SW)? ? ? 04/01/19 18:08:35
MNRCK2? ? ?(NY9D-11)? ?04/01/19 18:08:57
MNFAIR? ? ?(W0YC)? ? ? 04/01/19 18:49:39
MPLSDN? ? ?(WD0HWT-4)? 04/01/19 18:56:39
ENTER COMMAND: B,C,J,N, or Help ?
?
bye
?
###DISCONNECTED BY MNMPLS AT NODE MNRCK2
###DISCONNECTED BY MNRCK2 AT NODE WILMAR
Disconnected from WILMAR
? |
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MNRCK2 - the new path
Some good news from the folks at MN14567. Some news 11/17/23: N0NAS and I put up a new 7/24/365 node at Rockford, MN today. That should fix the western routes. The new path to MNLF2 is via MNRCK2 and then to Wilmar. Wilmar EM has been asking for this connection to be restored as has Benton. ?
? ? |
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Re: Emergency Communications and packet radio
The process of finding compatible packet radio hardware and software to transfer digital data files has been fruitful. The other upside to the NinoTNC is flexibility. It has 16 different packet speed/modes, switch selected - 4 of which offer higher speed HF modes now legal in the US. |
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Re: Farewell to the 300 baud rate limitation - a contender
The latest firmware revision to the NinoTNC has PSK shaped transmit envelopes 2400 Hz wide and up to 2400 baud! // 3/4.31: 24-Oct-23 : // : Improved DCD LED coast time and CSMA logic. // : Added IL2P+CRC (IL2Pc) modes to reduce false decodes. // : Restored full dynamic range of AGC. // : Change self-learn callsign algorithm to UI frames only. // : // : MODE SWITCH MAPPING // : // : *** GFSK MODES ** // : These require a '9600' data port or * // : discriminator/varactor connection. * // : IL2P, IL2Pc modes included for performance comparison. * // : ** // : 0000 9600 GFSK AX.25 * // : 0001 9600 GFSK IL2P * // : 0010 9600 GFSK IL2Pc * // : 0011 4800 GFSK IL2P * // : 0100 4800 GFSK IL2Pc * // : ** // : // : *** FM AFSK MODES **** // : These are suitable for FM radio speaker/ * // : mic connection. * // : ** // : 0101 2400 DPSK IL2P Phase reversal of 2400 Hz tone * // : 0110 1200 AFSK AX.25 Legacy FM Packet, APRS * // : 0111 1200 AFSK IL2P * // : ** // : // : *** SSB AFSK MODES *** // : Legacy HF packet 1600/1800 Hz tone FSK. * // : Filtered for 500 Hz occupied bandwidth. * // : ** // : 1100 300 AFSK AX.25 * // : 1101 300 AFSK IL2P * // : 1110 300 AFSK IL2Pc * // : ** // : // : *** SHAPED PSK MODES * // : These are suitable for SSB radios, or FM radios. * // : Phase modulation of 1500 Hz tone. * // : Filtered for occupied bandwidth depending on baud. * // : 300 BPSK, 600 QPSK send 300 symbols/sec, 500 Hz OBW. * // : 1200 BPSK, 2400 QPSK send 1200 symbols/sec, 2400 Hz OBW.* // : ** // : 1000 300 BPSK IL2Pc * // : 1001 600 QPSK IL2Pc * // : 1010 1200 BPSK IL2Pc * // : 1011 2400 QPSK IL2Pc * // : 1111 1200 BPSK IL2P * // : ** |
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Re: Farewell to the 300 baud rate limitation
Gentlemen, start your engines!
This has potential. |
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Farewell to the 300 baud rate limitation
ARRL Hails FCC Action to Remove Symbol Rate Restrictions11/13/2023
??reports that earlier today, the FCC Commissioners unanimously voted to amend the Amateur Radio Service rules to replace the baud rate limit on the Amateur HF bands with a 2.8 kHz bandwidth limit to permit greater flexibility in data communications. |
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Re: 60m band comments to the FCC
The ARRL proposal is to keep the first and last channel and add a wider 15khz operating section to the center of the 60m band, as well as keep the peak envelope power at 100w pep.
The FCC proposal reduces the power to 15w pep. |
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Emergency Communications and packet radio
One of the requests that came from the folks over at emergency management was to be able to transfer small spreadsheet files via packet radio.
I suspected there was a solution out there, somewhere, waiting to be found. The one thing Internet is good for is exchanging information and learning sometimes obscure methods. My shopping list was for a multi O.S. (Windows, Linux, Pi) packet radio terminal program that was dirt simple and could easily transfer binary files. It turns out I had been using it for a couple of weeks without knowing the program's potential. I'd chose it because it worked with the NinoTNC. It's called QtTermTCP by John Wiseman G8BPQ the creator of all things "BPQ" since the 1980's. ? About the only "gotcha" so far, is it's KISS interface. I don't know if it will work with older TNCs in original KISS mode or not.? I have testing to do. I do know it works excellent with a Raspberry Pi400 keyboard computer and the USB NinoTNC which "talks" via a 2m mobile radio.? Since the NinoTNC is USB powered from the laptop or Raspberry Pi, it makes a very tidy package. Out of the box, QtTerm will only connect outwards. Clicking the Listen button and checking the box lets QtTermTCP accept incoming connections AND transfer files via YAPP protocol. Clicking on YAPP button brings up a pane that asks where you want to store the received files.? Choose or create and choose a folder. If you are connected to another QtTermTCP station the send file button will be active (not grayed out) and if you click on it it will ask for a file to send. You chose the file on your computer, click on open and away it goes - at 1200 baud, it's slow by our standards, but will come out a perfect copy at the far end assuming there is a working path. So far in testing I've sent a 12k file between two stations which took 2.5 minutes. Using 3 stations with WILMAR node as the facilitator a 5k file took 4.5 min.? The second test was more real world with noise on frequency, multiple hops and??retries due to it.? Nonetheless, the digital copy comes through intact. This method may or may not be the final solution, but is certainly a step in the right direction. 73 'QBH |
Locked
Re: 60m band comments to the FCC
I wish the FCC would drop the channelized 60m arrangement.
Us folks with non resonant antennas have a hard time tuning up due to our radios not allowing anything but USB mode there. About the only way to make it work is to inject a audio tone and I can't hum that long :) Anyway, my 2 cents... 73 'QBH |