Bomb Island – Special Event

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Station Grounding & Bonding

Kevan attended the clubs August 2020 meeting and his presentation was very very interesting. Not at such a high level like some presentations but at a level we could implement his suggestions and understand why.

Note: all of the club business, opining and show and tell has been edited out by K4LLE. Which means this is a heavily edited video because the August club meeting was also a business meeting. For club business I direct you to the meeting minutes which will be posted under the tab MINUTES. This video is Kevan’s presentation and the Q&A session he ran afterwards. Also, because this MP4 is so big it could not be uploaded to this website. As such it was placed on a google drive with a sharable link. Click on this link and you will go to the google drive where you can download or view the full presentation.

https://drive.google.com/file/d/15z6OOdXjGvNNUI5uP4QetKO2svu9rEas/view?usp=sharing

This video is a ZOOM recording of the Columbia Amateur Radio Clubs (CARC) August 3 2020 business meeting. The CARC is not responsible for anything you see or hear in this video. This video is rated G for all audiences.

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Gallery: 2020 Field Day

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DHS SHARES LF Beacon

There is an LF beacon operating in the Columbia area. It can be received out to about 200 miles via groundwave – much further with skywave. This station is operating as a proof of concept Low Frequency alerting station, as part of a DHS SHARES trial program.   Our Amateur HF community knows that long-range emergency communications  can become unusable when HF skywave propagation is disrupted by a disturbed ionosphere.  But groundwave communications independent of the ionosphere remain available.  Such LF stations can provide essentially omni-directional blanket Alerting and low-bit-rate information coverage, nearly independent of mountains or foliage, etc.

The local station is transmitting on a center frequency of 194 khz. The best way to receive it is to tune your receiver’s USB Mode to 192.500 kHz, and use FLDIG or an equivalent program set at ‘1500 Hz CENTER,’ with a very narrow filter – the signal is only 36 Hz wide, so I use a 50 Hz filter for best reception. 

The signal presently being transmitted is THOR-Micro, available free from fldigi. The signal is sent with a 50 second on, 60 second off duty cycle and runs 24/7.

We are very interested in getting signal reports, and prefer to get them taken near noon, when any skywave component is minimized.  Reports of just the observance of the signal in a waterfall display, even of just an audable signal strong enough for CW (here: on/off as above), or of course, copy of the brief Alert text in the message window of THOR-Micro. 

Send reports to Dan Goldston WD4NG@arrl.net

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