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This livestream recording is from September 1, 2024 – the NW7US Radio Communications Channel Livestream.  We do this livestream every Sunday at 21:15 UTC.  Here is the link to the livestream from this past Sunday:

The livestream list is here:

https://www.youtube.com/@nw7us/streams

I hope to see you in our livestream live chat, during the next session on Sunday, at 21:15 UTC.  See you there!

Special Event Week: Dec 24-Dec 31, 2023

The 1st annual Olivia Digital Mode on HF Winter QSO Party, celebrating 20 years of Olivia.

The Olivia Digital DXers Club (we’re on ClubLog!) is holding the first annual Winter Olivia Digital Mode on HF QSO Party, starting at 00:00 UTC, 24 December 2023, and ending at 23:59 UTC, 31 December, 2023.

Minimum logging requirements:  Callsign worked, Band (or Frequency), Mode (I.e., Olivia 8/250, or other variations), Time QSO Started.  You can log more than that, but for the sake of the certificate, please send at least the minimum information per QSO, to NW7US (email is on QRZ profile).  Logs can be any common method, from an .ADI file, to a screen shot.

Full details are on our website:
https://OliviaDigitalMode.org

Olivia, a Multi-Frequency Shift Keying (MFSK) radioteletype digital mode, is an amateur radioteletype protocol designed to work in difficult (low signal-to-noise ratio plus multipath) propagation conditions on shortwave radio (i.e., high-frequency, or HF) bands. The typical Olivia signal is decoded when the amplitude of the noise is over ten times that of the digital signal!

Here is an introduction to the Olivia digital mode:

73 de NW7US

Announcement: Special Event Weekend, 02/11/2023

THE 1ST EVER OLIVIA DIGITAL MODE WEEKEND QSO PARTY

When is this special QSO party?

Valentine’s Day Weekend.  This event is held this year on February 11, 1400 UTC, through February 13, 0200 UTC

First Ever Valentine’s Day Special QSO Weekend Event: The Olivia Digital Mode on HF

Join our mailing group for live interaction with other Olivia users:
http://OliviaDigitalMode.net

Sponsored by the Olivia Digital DXers Club (on Clublog, and on Facebook: Olivia Digital Mode on HF Radio (Contestia included))

Example frequencies:

Olivia Digital Mode Suggested Calling Frequencies on HF

Certificate for participants, and more.  Organizer: Tomas Hood (NW7US), PO Box 110, Fayetteville, OH 45118.

This is the FIRST ever weekend QSO party for Olivia.

The Olivia digital mode on HF radio is a mode capable of two-way chat (QSO) communication (keyboard to keyboard, like RTTY) over long-distance shortwave (HF) ionospheric propagation paths, especially over polar regions.

If you are interested in more than a logbook QSO (such as is typical with FT8 and other propagation-checking modes) but want to chat with other hams around the world using digital modes, consider Olivia as one option.

This video captures a few moments of two-way conversation on the Twenty-Meter band, up in the sub-band where 1000-Hz digital modes are commonplace. More narrow-bandwidth settings are used in a lower subband in the digital slice of Twenty Meters. More details about the mode are in the files section of this website: http://OliviaDigitalMode.org.

In 2005, SP9VRC, Pawel Jalocha, released to the world a mode that he developed starting in 2003 to overcome difficult radio signal propagation conditions on the shortwave (high-frequency, or HF) bands. By difficult, we are talking significant phase distortions and low signal-to-noise ratios (SNR) plus multipath propagation effects. The Olivia-modulated radio signals are decoded even when it is ten to fourteen dB below the noise floor. That means that Olivia is decoded when the amplitude of the noise is slightly over three times that of the digital signal!

Olivia decodes well under other conditions that are a complex mix of atmospheric noise, signal fading (QSB), interference (QRM), polar flutter caused by a radio signal traversing a polar path. Olivia is even capable when the signal is affected by auroral conditions (including the Sporadic-E Auroral Mode, where signals are refracted off of the highly-energized E-region in which the Aurora is active).

Currently, the only other digital modes that match or exceed Olivia in their sensitivity are some of the modes designed by Joe Taylor as implemented in the WSJT programs, including FT8, JT65A, and JT65-HF–each of which are certainly limited in usage and definitely not able to provide true conversation capabilities.  Olivia is useful for emergency communications, unlike JT65A or the popular FT8. One other mode is better than Olivia for keyboard-to-keyboard comms under difficult conditions: MT63. Yet, Olivia is a good compromise that delivers a lot. One reason for this is that there are configurations that use much less bandwidth than 1000 Hz. 16 tones in 250 Hz is our common calling-frequency configuration, which we use lower down in the Twenty-Meter band, with a center frequency of 14.0729 MHz.

Q: What’s a ‘CENTER’ Frequency? Is That Where I Set My Radio’s Dial?

For those new to waterfalls: the CENTER frequency is the CENTER of the cursor shown by common software. The cursor is what you use to set the transceiver’s frequency on the waterfall. If your software’s waterfall shows the frequency, then you simply place the cursor so that its center is right on the center frequency listed, above. If your software is set to show OFFSET, then you might, for example, set your radio’s dial frequency to 14.0714, and place the center of your waterfall cursor to 1500 (1500 Hz). That would translate to the 14.0729 CENTER frequency.

The standard Olivia formats (shown as the number of tones/bandwidth in Hz) are 8/250, 8/500, 16/500, 8/1000, 16/1000, and 32/1000. Some even use 16/2000 for series emergency communication. The most commonly-used formats are 16/500, 8/500, and 8/250. However, the 32/1000 and 16/1000 configurations are popular in some areas of the world (Europe) and on certain bands.

These different choices in bandwidth and tone settings can cause some confusion and problems–so many formats and so many other digital modes can make it difficult to figure out which mode you are seeing and hearing. After getting used to the sound and look of Olivia in the waterfall, though, it becomes easier to identify the format when you encounter it. To aid in your detection of what mode is being used, there is a feature of many digital-mode software implementation suites: the RSID. The next video, below, is a demonstration on how to set the Reed-Solomon Identification (RSID) feature in Ham Radio Deluxe’s Digital Master 780 module (HRD DM780).

I encourage ALL operators, using any digital mode such as Olivia, to TURN ON the RSID feature as shown in this example. In Fldigi, the RSID is the TXID and RXID; make sure to check (turn on) each, the TXID and RXID.

Please, make sure you are using the RSID (Reed Solomon Identification – RSID or TXID, RXID) option in your software. RSID transmits a short burst at the start of your transmission which identifies the mode you are using. When it does that, those amateur radio operators also using RSID while listening will be alerted by their software that you are transmitting in the specific mode (Olivia, hopefully), the settings (like 8/250), and where on the waterfall your transmission is located. This might be a popup window and/or text on the receive text panel. When the operator clicks on that, the software moves the waterfall cursor right on top of the signal and changes the mode in the software. This will help you make more contacts!

RSID Setting:

+ NOTE: The MixW software doesn’t have RSID features. Request it!

Voluntary Olivia Channelization 

Since Olivia signals can be decoded even when received signals are extremely weak, (signal to noise ratio of -14db), signals strong enough to be decoded are sometimes below the noise floor and therefore impossible to search for manually. As a result, amateur radio operators have voluntarily decided upon channelization for this mode. This channelization allows even imperceptibly weak signals to be properly tuned for reception and decoding. By common convention amateur stations initiate contacts utilizing 8/250, 16/500, or 32/1000 configuration of the Olivia mode. After negotiating the initial exchange, sometimes one of the operators will suggest switching to other configurations to continue the conversation at more reliable settings, or faster when conditions allow. The following table lists the common center frequencies used in the amateur radio bands.

Olivia (CENTER) Frequencies (kHz) for Calling, Initiating QSOs

Current Olivia Digital Mode Calling Frequencies on Shortwave (HF)

It is often best to get on standard calling frequencies with this mode because you can miss a lot of weak signals if you don’t. However, with Olivia activity on the rise AND all the other modes vying for space, a good deal of the time you can operate wherever you can find a clear spot–as close as you can to a standard calling frequency.

Note: some websites publish frequencies in this band, that are right on top of weak-signal JT65, JT9, and FT8 segments. DO NOT QRM weak-signal QSOs!

We (active Olivia community members) suggest 8/250 as the starting settings when calling CQ on the USB frequencies designated as ‘Calling Frequencies.’ A Calling Frequency is a center frequency on which you initially call, ‘CQ CQ CQ. . .’ and then, with the agreement of the answering operator, move to a new nearby frequency, changing the number of tones and bandwidth at your discretion. Even though 8/250 is slow, the CQ call is short. But, it is narrow, to allow room for other QSOs nearby. It is also one of the best possible Olivia configurations for weak-signal decoding.

My first QSO (and, yeah, it was with Morse code) was petrifying and…

What’s your story of your first QSO?

73 de NW7US

When I got home from work last night I quickly mowed the lawn because the weatherman said there was a sixty percent chance of rain on Saturday and Sunday and I wanted to get ahead of the game. After working in the yard I plopped down in the shack to see if I couldn’t make quick work of the W1AW/1 and W1AW/9 portable stations.

Worked them both within a whisker of each other on 40 meter CW then worked them both again later on 80 meter CW for insurance. I didn’t think the Indiana station would be difficult, but I wasn’t quite as confident about Rhode Island but all’s well that ends well and both are logged and another week of the QSO Party is behind us.

Given that the weatherman said it would probably rain, I shouldn’t have been surprised to wake up this morning to sunshine and blue skies. I swear the weather prognosticators are getting worse at their jobs even as technology has delivered into their hands unfair advantage over the elements.

Brenda says it’s because the weather has become “news” and all of them want to be the first to report a bad storm using giant touch-screens powered by super, frappa, chappa, slappa doomsday doppler radar systems.

She might be right…

Anyway, with the sun shining we hit the local farmers market early this morning and picked up more sweet corn, tomatoes, and a great big melon. And get this, the guy who was selling from the back of his melon truck, told everyone who would listen that he would be back in two weeks — with apples.

Yep, the days are ticking away and the orchards around here are near to busting with autumn goodies. Another cold snap is due to arrive here on Monday and it looks like the first few nights of August could break a few records.

Not to worry though, I’m certain there remains yet a few more days of blistering heat before Summer yields to Fall, but we’re on the backside of 2014 with school days and sweet apple cider coming up fast.

Back in December of 2011 I got this email from my dad, Larry (KD6EUG) about the severe storm damage to his cabin in Mi-Wuk, California – located in the Sierra Nevadas:

The big pine tree that is located at the corner of the back deck, the one that we used as the center for all our antennas, split in two and about 90 ft of it landed on the back deck and cabin/garage. All the dining room windows and sliding doors are blown out. There is a 6″ separation between the garage and the kitchen. The PG&E power meter and feed lines to the power pole are ripped out. The wind had gusts of over 35mph.

Dad

Here are a few of the picture I received over the next few days showing the destruction:

My dad and I had a great field day from the cabin back in 2009. It was quite a blow to see what nature had delivered.

It has been a long path since December 2011. Through diligence and perseverance, my dad was able to revive the cabin. The work was finally completed this past summer.

We had another scare with the Rim Fire back in August and September. The fire actually came within a few miles of the cabin but fortunately the firefighters were successful in stopping it before it could do any damage.

My dad is now up there enjoying the California QSO Party from the cabin in Tuolumne County (…sometimes a pretty hard-to-get county in the CQP).

We have tried on several occasions to attempt HF QSOs while he has been at the cabin and I have either been here in Kansas or when I was stationed in Virginia. We never had much luck and have primarily used my EchoIRLP node as the best way to chat (IRLP Node 3553/EchoLink Node: KI4ODI-L 518994). Well, our luck changed today. We decided to give it a go prior to the CQP and started at 10Ms and worked down until we got to the 15M band. On 21.400 MHz we had brilliant success in carrying on an HF QSO. I’ve already send out the QSL card to confirm the contact.

With my coming retirement from the Army, I am going to have the opportunity to head back out to the California Sierra Nevadas this next June for Field Day 2014. I am looking forward to that!