Tag Archives: Southgate ARC

Solar Minimum: A “relatively large” sunspot makes appearance

(Image: spaceweather.com)

(Source: Southgate ARC)

With Solar Minimum right around the corner, sunspot counts are at an almost 10-year low. So it came as a surprise yesterday when a relatively large sunspot emerged near the sun’s eastern limb.

AR2699 has a primary dark core larger than Earth with many smaller magnetic condensations trailing behind it, in all stretching more than 75,000 km across the sun’s surface.

Rare “solar minimum sunspots” are capable of intense explosions just like sunspots during more active phases of the solar cycle.

Visit Spaceweather.com for more information and updates.

Make your own 3-D printed crystal radio

(Source: Southgate ARC)

Did you know you can build your very own working 3D-printed radio – without any soldering, electronics experience, electric cord, or even batteries?

Digital Trends reports that’s exactly what talented Houston, Texas-based 3D-printing and electronics enthusiast Sage Hansen has created. And he’s willing to show you how to do it, too.

Called a crystal radio receiver, or sometimes a “cat’s whisker receiver,” this is an incredibly simple type of radio receiver that was popular in the earliest days of radio. The only power it requires to work is the received radio signal, which is used to produce sound. It is named after its most important component, the crystal detector or diode.

“AM radio was one of the first ways of transmitting audio to a very broad audience in the early 1900s, but it is still very popular today,” Hansen told Digital Trends. “It starts with the radio station converting their audio sound waves into electromagnetic waves, which can travel great distances.

Each radio station uses a specific frequency that is constant, but the sound waves are mixed so they amplify and modulate the base radio wave. What makes the crystal radio so exciting is how simple the circuit is, and how it can be made out of normal household items.

Watch the video and read the full story at
https://www.digitaltrends.com/cool-tech/3d-printed-working-radio/

4KZ celebrating 50 years, now on shortwave

The 4KZ transmitter is located in Innisfail, Australia

(Source: Southgate ARC)

Australian broadcaster celebrating on shortwave

As part of 50th celebrations, radio broadcaster 4KZ in Northern Queensland is now on 5055 kHz and already getting signal reports including from North America and New Zealand.

General Manager of NQ Radio (4KZ, 4AM, 4AY, KIK FM & KOOL FM), Al Kirton announced the decision to SWLing Post in May, and now confirms the transmission began on December 20.

He told the WIA: “Unfortunately we are on half power for a couple of weeks until one of the RF boards can be repaired, then we will go up to I kW.”

The shortwave broadcast is from a site at east Innisfail in Tropical North Queensland. Mr Kirton said the USA-made 1.2 kW transmitter being used is feeding an Inverted V antenna at about 14 metres high at the peak.

The program is from the 4KZ and 4AY AM band transmitters and designed to cover the Cape York area and the northern outback. However the 60m band signal has been heard further away.

He said: “I have had many reception reports, many with audio clips”, some from Queensland, Northern Territory, New South Wales and Victoria, as well as from “Monterey USA, Alberta Canada and New Zealand.”

The transmission hours are about 0500 to 2300 hours UTC. All confirmed reception reports will receive a 4KZ shortwave QSL card. No return postage is required.

Reports by email to Al Kirton (al@nqradio.com.au) or to Radio 4KZ, PO Box 19, Innisfail Queensland 4860 Australia.

The Australian Broadcasting Corporation stopped its shortwave services to the northern outback in January 2017.

Jim Linton VK3PC

Radio Caroline: AM service to open on Friday, December 22

(Source: Southgate ARC via Mike Terry)

Radio Caroline AM service to open

Weather and technology permitting, our programmes on 648 kHz will commence originating from the Ross Revenge at 7.00 AM on Friday 22nd December.

The changed schedule for the day will be :

7am    Johnny Lewis
9am    Top Fifteen
10am   Ray Clark – with the official launch at midday.
2pm    Kevin Turner
5pm    Resume normal programmes

No doubt Bob Lawrence, Martin Fisher and Jerry Wright will personalise their evening shows to mark the day.

Of course we are delighted to have found and secured what must be the best possible AM transmission site for our service. We thank Cobra Mist Ltd for this facility whilst noting that this is a private site which cannot at this time be visited.

So, another date for the Radio Caroline calendar of events and the inevitable question. Where do we go from here?

Radio Caroline

BBC MW stations in Lincolnshire and Nottingham to close

(Source: Southgate ARC)

More BBC AM transmitters to close

On the British DX Club (BDXC) Yahoo Group Nick Buxton reports that BBC AM stations in Lincolnshire and Nottingham are to close

In his post Nick says:

In an e-mail reply today (29/11) from Andy Roche, BBC R. Lincolnshire’s Acting Programme Editor, he says 1368 kHz will cease broadcasting their programmes on 6 January 2018. It will continue until 28 January 2018 running a continuous loop advising re-tune to FM/DAB. They will shortly be running a campaign to let people know.

In a very brief e-mail reply from BBC Radio Nottingham, enquiring about closure of their 1584 kHz service, they advise “No transmission from late December. Re-tune now”

No reply received from BBC R. Humberside concerning their 1485 kHz transmitter….

British DX Club (BDXC)
http://bdxc.org.uk/
https://groups.yahoo.com/group/BDXC-News