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Before modern radio broadcasting, the trails were being blazed both in public broadcast, but also critical links out of the local area. Here’s a side-look back in time…. in this 1939 Film: New Zealand Shortwave Communications; Morse code (CW)

The romance of the radiotelegraph service (in this video, the service in New Zealand) is a fascinating aspect of communication history. The use of shortwave, longwave, and medium frequency spectrum for communication, particularly through Morse code, played a significant role in connecting people across vast distances. This service utilized the high-frequency spectrum known as “shortwave” (from 3 MHz up to 30 MHz) as well as the longwave (30 kHz to 300 kHz) and medium frequency spectrum (300 kHz to 3 MHz).

This short film is from 1939, and captures the essence of communication at that time in history, to and from New Zealand using shortwaves and Morse code. It showcases the importance of the radiotelegraph service in enabling long-distance communication during that era. The transition from Morse code via spark-gap communications to continuous wave (CW) modulation marked a significant advancement in the technology and efficiency of radio communication.

It’s incredible to see how technology has evolved over the years, transforming the way we communicate and connect with each other globally. Films like these provide a glimpse into the past and remind us of the ingenuity and dedication of those who worked in the radiotelegraph service to ensure effective communication across the seas.

This film is a 1939 Government film scanned to 2K from a 16mm combined B/W reduction print.

If you have not yet explored ham radio repeaters, this might be interesting to you.

What is an amateur radio repeater and how do they work?

In this video, with a non-amateur-radio viewer in mind, I chat about the very basic concepts of a repeater.

It is filmed in a relaxed, “ride along with me,” format.

Want to learn more about ham radio (amateur radio)?
Visit: http://nw7us.us/arrl

The old setup

As an avid contester, I find myself sitting at the radio for long periods and I am no longer a spring chicken my body is not as forgiving as it used to be. Some of the changes in the past I made were getting a proper desk chair, and making sure the monitors I look at for long periods are at eye level. Also getting up each hour and doing a little walking around also helps.
As I became more involved in my love of contesting, meaning I extended my operating times I then found other issues regarding age and repetitive moments that hindered my contesting time. To continue to enjoy my contesting adventure some changes needed to be made at the station. 

During a CW contest when your QSO count is over a thousand plus imagine how many times your baby finger hits the "enter" key on your keyboard. Let me tell you it is  TONS of times. I found some tendons in my right hand became very sore.  The problem was it did not go away after the contest it affected me for close to a month off and on. I changed it up by daily stretches for my hands, during a contest not hitting enter all the time but also using the F1 key. Both keys send "CQ TEST VE9KK" and I also added a wrist support to my keyboard and my mice for my right hand. 

Keyboard support.

During a contest many times, I would be spinning the VFO and changing RF gain to name a  few things. My radio was far back on my radio desk which meant I had to lean forward each time to play with the radio controls. After some time my back and shoulders would get very sore. Most times I noticed this the next day and not right away. To solve this I moved my Icom 7610 forward on the desk, this way there is no more stretching or leaning forward to make radio changes. 

Mouse support.

The next change was dual mice for my desktop using a free software program called Either Mouse. Why 2 mice you ask.....well on my desktop during a contest I have N1MM+ contest logging program on the go and Win4icom radio control software running. During a contest, I  may need to change filter settings, adjust the audio peak filter (APF)  and so on. While doing this during a contest contact in the past meant moving my mouse off N1MM+ program and over to Win4icom program and then back. The "and back" part most of the time gave me an issue. In the heat of battle, I would move the mouse too fast and lose track of it or accidentally click the mouse let's say on a macro and send something that just confuses the contact....you get the picture. 

During a contest, I have one mouse pointer on Win4icom program and the other on  N1MM+ contest logging program. This way I can click on either program. I also am using wireless mice as I found the corded mice were affected by RFI. 

The new setup.

Well, that's if for changes here and all for the love of contesting!

The Colorado Search and Rescue Association is promoting FRS (Family Radio Service) Channel 3 as “the default during backcountry search and rescue (backcountry SAR) emergencies.” FRS channel 3 is the same as GMRS (General Mobile Radio Service) channel 3. There is more GMRS info here. To keep things simple, no CTCSS (“privacy code”) is used…carrier squelch only.  See the CSAR announcement here: FRS Radio Use for Backcountry.

For backcountry exploring, it is important to emphasize self-sufficiency and to avoid reliance on electronic gizmos that may fail. Avoiding an emergency situation is way better than having a device to call for help, which may be many hours away. See this article for a discussion of The Ten Essentials for Hiking.

Still, the FRS3 concept has merit. Many backcountry hikers already carry FRS or GMRS radios, so designating a preferred channel makes sense. My read on this is that randomly calling for help on FRS3 will not be very effective due to the limited range of FRS radios. However, it does not hurt to try. More likely, FRS3 can be used for local comms once Search and Rescue crews have been deployed and are within a few miles of the party in distress.

Ham radio operators may want to carry a handheld transceiver capable of transmitting on 462.6125 MHz. For emergency use only, of course.

73 Bob K0NR

The post FRS3 For Colorado Backcountry appeared first on The KØNR Radio Site.

The Colorado Search and Rescue Association is promoting FRS (Family Radio Service) Channel 3 as “the default during backcountry search and rescue (backcountry SAR) emergencies.” FRS channel 3 is the same as GMRS (General Mobile Radio Service) channel 3. There is more GMRS info here. To keep things simple, no CTCSS (“privacy code”) is used…carrier squelch only.  See the CSAR announcement here: FRS Radio Use for Backcountry.

For backcountry exploring, it is important to emphasize self-sufficiency and to avoid reliance on electronic gizmos that may fail. Avoiding an emergency situation is way better than having a device to call for help, which may be many hours away. See this article for a discussion of The Ten Essentials for Hiking.

Still, the FRS3 concept has merit. Many backcountry hikers already carry FRS or GMRS radios, so designating a preferred channel makes sense. My read on this is that randomly calling for help on FRS3 will not be very effective due to the limited range of FRS radios. However, it does not hurt to try. More likely, FRS3 can be used for local comms once Search and Rescue crews have been deployed and are within a few miles of the party in distress.

Ham radio operators may want to carry a handheld transceiver capable of transmitting on 462.6125 MHz. For emergency use only, of course.

73 Bob K0NR

The post FRS3 For Colorado Backcountry appeared first on The KØNR Radio Site.

Hello and welcome to Episode 546 of Linux in the Ham Shack. In this episode, the hosts take a look at some of the variations of the newly released Fedora 40 distribution. Topics include installation, desktop environments, ease of use, ham radio readiness, quirks and more. A particular focus is the partitioning system and other potential issues. Thanks for listening and have a great week.

73 de The LHS Crew

I am back and it's not that I have been anywhere but summer is here and well blogging takes a sideline as I have outdoor jobs to do and after all it is summer. I do keep up my readings on the blogs that I  follow but for posting my time has been allotted to other things. Also, there have not been too many radio-related exciting things going on. Now having said that this weekend I took part in the ARRL field day function. Since selling my KX3 and K2 I have no rig to bring into the out of doors so I entered again as indoor and house power or 1D  category. 

The ARRL field day contest is more relaxed and not as intense as other CW contests and yes before you ask I entered as CW  only. The speeds are in around 20-26wpm but you do find the occasional OP hitting 30 plus. I used my faithful Icom 7610 at 100 watts into my  Hustler 4BTV. The conditions were tough at times with deep QSB. At one point a signal was S7 and then gone so most of the time you had one chance to get the other stations' info. This is my third year taking part in this "event" and to be honest, I am not sure why in the past I never took part. 

This year I decided to add some flair to my participation, I used both of my Icom 7610 independent receivers. I have always wanted to do this but some CW contests are very let's say busy for me and to juggle a second VFO on a different band would let's say stretch my abilities. BUT radio contesting is all about learning, isn't it? For the field day contest I used VFO A as my running (calling CQ  contest) VFO and VFO B on a different band to both see on the waterfall if the band was opening and to search and pounce strong stations. When doing this you have VFO A in one ear and VFO B in the other....now that takes some getting used to. But the field day contest is the ideal contest to do that as it is a relaxed event. It seemed to work for me as I doubled my score and contacts this year compared to last year's field day.