Number 3

Photos from SCCARC Annual Holiday Celebration

Saturday December 15 at the Capitol Ihop.

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David Shoaf KG6IRW, SK

I am very sad to announce that one of our club members is SK.

David Shoaf (KG6IRW) passed last Thursday, Nov. 29th after a short, but valiant, battle with cancer.

Our thoughts, prayers, and condolences go out to David’s family, his wife Sharon, and David’s son, and grandchildren.

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Davidl appeared at a CAKE meeting in October, and Ron (W6WO) commented on how everyone was delighted and happy to see him attend the meeting. David had a way of making a conversation light up, especially when he talked of the hobby he enjoyed, and the equipment he supported. Always an ambassador of fun, David’s contribution to any conversation was appreciated, and interesting.

I met David around 2011 when he attended the K6BJ Club meetings, and he soon became a semi-regular at CAKE meetings. Elecraft soon occupied much of his time,  where he became their chief support and event manager.

Through a series of conversations, David and I came to find out that we had crossed paths many times in life. From our shared background working at Hewlett Packard (David for over 20 years), at events when he was representing Elecraft (Dayton, Friedrichshafen, and Visalia), and at his other passion of playing at local musical events, like Bocci’s Cellar and other locations around town. One of my favorite times to say Hi to David was as a runner in the Wharf-to-Wharf 10K race. My annual visit to him was punctuated by a quick wave, and a shouted ‘73’ as I ran past, while he played for the participants, and waved back.

David spent his time helping others. Setting up an HF station, giving inspiring talks to the club on a variety topics like Amplifiers and upcoming digital technologies. In one talk on JT-65 (I still have the link to his slides), not only did he tell us about it, he actually went to peoples shacks (including mine) to get them up and running! All you had to do was ask. 

Storytelling by David was still one of the greatest joys in being around him. His smooth voice incorporated a warm southeastern style, with a little mischief. It was his signature on (and off) the air. When you got him talking, you also found out about his audiophile and engineering background, and his joy just talking to folks. David always had an ease and grace in making you feel like you were his friend, even if you only just had met him. There we many stories told at events, but none where so special to him when he proudly talked about his son as a pilot in the Air Force, and David working him on HF while in flight.

I’ll miss a David as a Ham, a musician, but most of all a friend.

It is unknown at this time if a celebration of life will be held, but please let everyone know if there will be one.
I am sure there will be some wonderful stories, good laughs, and warm friendships continued and created. Something David would enjoy.

73, de Don K6GHA
SCCARC President

K6GHA@arrl.net


Some Images from the December 8 CAKE Meeting

Rene K6XW and old rectifier

Rene K6XW and old rectifier

The CAKE group dec 8 2018

The CAKE group dec 8 2018  The seated group from L-R are Richard K8SQB Tom KW6S Fred KJ6OOV Eric WA6HHQ Ron W6WO and Vic AE6ID

W6WO ESR Test Board

W6WO ESR Test Board

Fine 60s era amp shown by Rene K6XW

Fine 60s era amp shown by Rene K6XW

 


Field Day 2018 at Ben Lomomd CDF Camp

 
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Reminiscent of John Reihart’s break  though in 1922/3

First USA – EU amateur QSO on 2200m, used QRP Labs Ultimate3S transmitter at both stations

It’s always nice to be able to report unusual uses of the well established Ultimate3S QRSS/WSPR/etc transmitter kit. The majority of constructors use the kit for WSPR. But it can transmit lots of other modes too! CW, FSKCW, DFCW, QRSS, Hell, Slow-Hell, JT9, JT65, ISCAT, Opera, and PI4. In all their various flavours. DFCW is very slow CW, sending Morse characters but with both “dit” and “dah” having the same duration; to differentiate between them there is a frequency shift so that the “dah” is typically 5Hz higher than the “dit”. It has a very high signal to noise ratio when long symbol durations are used.

Chris 2E0ILY and Paul N1BUG report the first ever USA – EU amateur radio QSO on 2200m band (136kHz band), on 26-Mar-2018. They used DFCW mode with 60 second dits and a frequency shift of 0.25Hz permitting a very high signal to noise ratio. 60 second dits in normal CW would mean about 1 word per HOUR!

Chris and Paul both used their Ultimate3S kits to transmit the DFCW messages. Antennas are necessarily electrically short on 2200m, and so typically high powers are used. Paul N1BUG says he uses a home-made single FET Class E power amplifier, with 175-200W output; the EIRP is estimated at no more than 0.5W. His antenna is a 27m tall vertical with 3x 33m parallel top hat wires spaced 1.5. The receiver is a 9m tall low noise vertical feeding home made band pass filter, pre-amp and Software Defined Radio. Paul says:

“We used an old technique of night by night transmission sequencing and completed the QSO in four nights which is the minimum possible with this method. This QSO would not have been possible without Chris’s kindness and dedication nor without my trust U3S!”

“The receiver is a modified Softrock Lite II. The oscillator has been reworked to provide a suitable LO for 2200m reception, the front end filter reworked and significantly augmented. It is preceded by a 2N5109 preamp and BPF.”

More details are on Paul’s website http://www.n1bug.com/lfmf/

The pictures below show Paul’s Ultimate3S, and Chris 2E0ILY’s transmission mberswith the “O” signal report as received by Paul N1BUG.

Congratulations to Paul N1BUG and Chris 2E0ILY on this achievement!