wythall radio club

What’s happening at the low frequency end of the amateur spectrum?

Dave Pick, G3YXM, RadCom’s LF correspondent, will be revealing all on 5th November at 8.30pm, Darts Room, Wythall House.

All welcome. 

Have some refreshment at Wythall House bar before and after the event.

This is just one of the features in Wythall Radio Club’s new 12 month programme now available here – and on right hand side of our home page.

We’ll post updates as events are added and finalised.  

Photo of Droitwich aerial system courtesy of an anonymous rigger in late 1960s – source and more info here

Is 10 open today?

That’s the question many of us are asking as we wait for the summer doldrums to disappear and sunspot maximum conditions to reappear.

One way is to put out a call and see if anyone answers. 

When I first got my licence I was told it’s always worth calling on a band that seems dead – it may just be that everyone assumes the lack of activity means it’s dead, when in fact it’s open!

Another way for voice mode and CW operators is to see if they can hear any FT8 burbling on 28.074USB.  If there is, decoding signals may indicate what paths are open.

Then there is the VERY extensive beacon network.  There are beacons on all amateur bands, but 10 meters is very well served.  

Most 10 meter beacons are found between 28.200 and 28.300, with some below and above these frequencies.

Beacons transmit their callsigns in Morse code, and may also give their locator square, power and antenna details.  Listening to them can be good practice for copying Morse code!

There is a recently updated list of beacons here.

Remember to enable CW on your receiver to get the correct frequency!

Early this morning I could only hear the German beacon DL0IGI, transmitting on 28.205. 

At lunchtime, I couldn’t receive this beacon – but instead the Faroe Islands beacon OY6BEC was very strong on 28.235. 

This is part of a comprehensive set of beacons in a radome to protect from the weather – shwon in photo left!

There is a special worldwide set of 18 beacons on 28.200 – the International Beacon Project. 

Each beacon transmits for 12 seconds once every 3 minutes at 100 watts.  There are then 4 x 1 second dashes sent at 100, 10, 1 and 0.1 watts. 

This lunchtime I could only hear 4X6TU in Israel, and I copied the 100 and 10 watt dashes, I could just hear the 1 watt dash, but not the 0.1 watt dash. 

Beacons may transmit a continuous tone between sending the callsign – so if you hear a tone, listen for a bit and see if a callsign appears.

At least it’s something to do if the band doesn’t have any QSOs on it!

Do want to know how to use cheap drone transmitter/receivers to get on 5.7GHz? – the photo shows one in operation at Broadway Tower.

Or build a J-pole antenna for bicycle mobile operation? 

Or with more activity on the HF bands as we approach the solar cycle peak, perhaps you’d like to build a small profile ‘C’-beam for 20m using easily available plastic conduit?

It’s shown in the photo left.

It’s all there – and more – in the Wythall Radio Club newsletter archive!  Click here to find the index to articles.

Or brouse the issues by clicking here.

You’ll find lots of invaluable advice, projects and ideas.

We don’t publish a newsletter these days, but try to keep the world informed on this web site.

Or come along to the Club any Tuesday evening or to one of the special events. 

Our location and contact details are on this web site.

COMING SOON .. A REPORT ON OUR RECENT EVENING SPENT ON THE LAWN OF WYTHALL HOUSE WITH OUR VERTICALS AND THE VECTOR NETWORK ANALYSER (VNA)

Tiny VNAs can now be bought cheaply.

Here’s one Lee G0MTN used to test his rebuilt band-pass filters.

But how can we use them to analyse our antenna systems and improve their performance?

Wythall Radio Club members will be gathering next Tuesday 23rd. July for a practical workshop. 

We’ll be using a VNA to analyse some portable antennas.

We will plot SWR over a given frequency range and display this as a line graph.  And see what else the VNA will tell us!

As usual, 8pm at Wythall House (in the garden if the weather is ok).

Visitors always welcome – bring an antenna!

Following Chris’ (G0EYO) previous article on Training  for the Amateur radio Licence, Martin M7XFD describes his journey to the Foundation Licence (and beyond)

WHAT NO CW!! OR HOW I FOUND THE FOUNDATION LICENCE ..OR THE FOUNDATION LICENCE FOUND ME

Martin (left) receiving award certificate from Lee G0MTN

Always at the back of my mind has been the idea of getting licensed as a Radio Amateur.

As a young person I was a Short Wave Listener. My father had been involved in Radar during World War II and at a very young age I discovered a crystal set in his box of ‘bits and pieces’.

We used the metal frame of my bed for the earth, strung a long wire down the garden and with a pair of ex-army headphones rotated the stiff aluminium thing with corroded vanes to pick up the BBC Light Service on the medium wave. Hearing speech and music, with no batteries or electric power involved, was sheer magic to young boy!

Following on from that we had a valve radio that had shortwave that I was able to use and added a long wire antenna. I finally bought an ex-army radio, the size and shape of the top half of a large fridge. A battleship grey Marconi 52 I think. It weighed 50lbs, had glowing valves and UV sensitive dials that also could glow in the dark. I listened to Hams around the world and I wrote to them for QSL cards to confirm I had picked up and heard their signal.

The mighty battleship grey Marconi 52

It was the CW (Morse requirements) that put me off getting my licence (sorry editor)-  [Ed.unforgiveable!!]

Years flew by……….

With a career in electronics which led to computers, I retained my interest in radio and bought an airband radio that had three crystals allocated to Birmingham Airport’s Control tower, approaches and one other: (perhaps I only used two slots as the crystals were expensive.)

Living close to an airport I have updated my scanner and noticed technology changing with the advance of digital radio.

A few years ago I noticed that Wythall Radio Club ran training courses for the Amateur radio Licences and I toyed with the idea of finally becoming licensed.

Time passed. I gained another handheld receiver.

Some of my post-retirement hobbies changed, freeing up time, and in the summer of last year I emailed the club to inquire if I could get involved. As a result Chris G3YHF invited me to a talk at Wythall House in September and a few weeks after that to a ‘Plug and Play’ Open day in the fields at Wythall Community Centre.

G3YHF’s neat portable CW Plug and Play table

I was not the only prospective new member so the talk was on Amateur Radio in the modern world of today. What struck me was that despite the  decline in  numbers of active Hams , the focus has shifted to pursuing  different  ways of doing things in this digital age and the technical challenges within the hobby. I could see this as a way of finding out what would interest me most.

I took my wife to the open day so she could understand better what I was thinking about getting into. She had a good time and could see the range of interests and the camaraderie involved. The fact that every rig and antenna set-up was portable was good for me to see as my main interest is in handheld and portable systems. ‘How much is it going to cost?’, she said. ‘Oh not much’, I replied. ‘There are very cheap handheld radios from China’.

 Neil,G1TZC , taking time out from his satellite dish, reassured me that Morse code was not mandatory and showed me a copy of the Foundation licence manual, explaining me that studying and taking the exam was straightforward especially given my background in electronics. Other Club members encouraged me to have a go and again I checked : definitely no  CW requirement!! 

I sent for the manual from the RSGB the next day.

Wythall Radio Club do not run their own courses anymore as most of the courses have gone on-line, so in September and October  I took the Essex Ham course and passed my Foundation Licence in November last year.

Neil’s Pop- up shack with captive audience . (Martin in there somewhere?)

From contacting a Wythall Radio Club to being licensed took less than three months.

To reassure those that might be thinking of getting into the hobby, even taking the exam itself was a pleasant experience as there is a pre-exam chat with a person who is also a keen radio amateur and the same person is on hand to facilitate the online exam session.

Martin’s current rig

I traded my scanners in for a very good Handheld radio transceiver (right). Even though I could get something much cheaper this was going to be my sole equipment for a while. As you will recall I said I wanted portability rather than a fixed set-up at home

However to get more coverage, with advice from Ian M0LQY, I have subsequently put together a hotspot. With the handheld radio I have three options. I can make contacts directly locally and on the move, via near and sometimes far repeaters, or through the hotspot over the internet. With the latter I can make contacts all over the world, but I have enjoyed most being able to contact  club members directly and via the Wythall repeater. I am also getting to know other Radio Amateurs locally and further afield – sometimes as I pass by on my travels

        MMDVM Pi-Star Rig

It was seeing a YouTube video on a ham using a Handheld radio and a hotspot in his house, contacting the World that was one of the triggers to contact WRC which led on to the Foundation Licence.

To continue to extend my knowledge I am now studying for the Intermediate Exam which is taking longer, but  equally enjoyable.

   For me Amateur Radio has so much a lot to offer.

I am enjoying VHF/UHF and surprising world wide contacts when I want. With the summer coming then HF with a portable set up may be something to try.

Shall I learn morse code? … I am not rushing!! (you never know Ed. !!)

The full amateur radio experience is within your grasp: read on and discover.

A recent pass of the Full Licence Examination by our Hon Sec. Clive (now M0KNP) got our Training Co-ordinator Chris G0EYO thinking about how wonderful it is that people who have an interest in radio communications, but no technical, engineering or academic training can pass an examination in which some of the questions require them to learn a high level of technical and electronic theory and scientific calculations.

Chris G0EYO has written an article “Achieving the Impossible by Getting That Full Amateur Licence”  where he describes how the structured approach of the Bath Distance Learning Team has got around 1000 amateurs through their Intermediate and Full Licence examinations with their courses which have an award winning success rate.  It is based around a Syllabus which is produced by the Radio Society of Great Britain (RSGB) and approved by Ofcom. Each course ties in the material in Course Books (again published by the RSGB) with the requirements of the Syllabus, so that everything that is examinable is covered by the course.

The team behind the course have put in an incredible amount of time and research to make sure there are no gaps in the training and that each week’s topics tested by a quiz which the students do under timed conditions. The weekly tutorials are optional but are at the same time every Wednesday evening on Zoom. If a student is unable to watch a tutorial in real time a YouTube video of it is available to watch the next day. The tutorial is also supported by a power point presentation and this also available as a PDF to download the next day. 

At the end of the course, the student is expected to have a go at several Mock exams similarly structured to the ones set by the RSGB. It is the tutor’s job to supply the students with worked answers for all the quizzes and mock exams after they have been submitted and to help them with any queries they may have on the questions or course material. The tutor also keeps in contact with the student over his progress and will chivvy them along if they fall behind.

The BBDL Intermediate course runs for 19 weeks and the Full course runs for 20 weeks. Both of these courses call for a serious commitment from the student. In addition to the 2 hour weekly tutorial, you will need to spend another 2 to 4 hours studying each week’s material, preparing for and doing the weekly quiz.

https://www.wythallradioclub.co.uk/?page_id=13341&preview=true

YOU WILL FIND THE ARTICLE IN THE LIBRARY/ARTICLEOF THE WEBSITE OR THROUGH THE URL LINK ABOVE

Kanga? ROOster? Christopher Robin meets ham radio?

No, just the latest kit from Kanga products.

With Wythall Radio Club’s ‘How low can you go? QRP month looming in January, I thought I’d dig out some of my kit QRP radios. 

Back in 2000 I built the Foxx 3 kit from Kanga Products.  This 1-watt CW rig was crystal controlled on 7030KHz.  It was based on the original 1983 Foxx circuit by George GM3OXX (SK) published in Sprat – the magazine of the G-QRP Club.

Club members have had a lot of fun with this kit.  It’s produced contacts with other QRP-ers around Europe.

However, being a direct conversion receiver mine suffered from considerable break-through from the Droitwich Long Wave transmitter about 15 miles away from my QTH.

Now Kanga have produced an updated version of this design called the Rooster. 

Like Foxx 3, this is a QRP CW rig for 7030KHz.  However, power output has been increased to 2-watts and there is much improved sensitivity and selectivity due to its active audio filter.  This is centred on 750 Hz with a 500 Hz bandwidth.  

And rather than being mounted in an Altoids tin – the preferred method for Foxx 3 builders – the Rooster is supplied with its own aluminium case.

There are less components and tasks to undertake than when building the Foxx 3 as it uses SMD (surface mount devices) that are pre-installed on the PCB and 20 through-hole parts that the builder needs to solder in place.

The kit arrived with components neatly packaged in small bags so checking they were all there was a simple task.  The 26-page downloadable instructions are in Kanga Products’ usual excellent clear and illustrated format, with instruction for testing each stage after it is completed.

A current limited 12v supply is recommended for testing, but there is probably low risk of damage using a conventional 12v (not 13.8V) supply or battery PROVIDED the location and soldering of components is thoroughly checked after each stage. 

I use a magnifying table lamp for checking my soldering, especially for identifying any solder splashes that might result in short circuits.

I spent about 3 hours building and testing the kit.  I could have taken less time, but I like to savour the process of construction.  In addition, I had a couple of problems (discussed later) that added some time.  Kanga suggest that the rig could be built in an hour, eg at a Build-a-thon.  It could be with experienced builders, but it would be a rush!

I only had 2 problems.  The first was in testing the audio amplifier, where plugging in the headphones and touching a metal screw-driver to particular components should result in a ‘buzz’.  It didn’t.  There was a weak scratching noise but no buzz. 

Using the circuit diagram and my trusty analogue multi-meter, I checked continuity of the audio section, and it was all OK.

The soldering was very straightforward, so I decided just to press on.  My faith was rewarded as the next task was to install the side-tone components.  When I tested this, it worked perfectly.  So clearly, the audio-amp was ok.

The other problem was my error in installing the diode in the neighbouring holes intended for one of the inductors.  Just lack of concentration.  Unfortunately, I’d trimmed the leads before I realised what I’d done!

However, I use minimal amounts of solder, so it was easy to remove the diode and clear the holes by pushing one of the trimmed leads into the hole, heating it with the soldering iron, and pulling it through with fine-nosed pliers.

Luckily, the holes the diode should have gone in were not spaced as far apart, so I could fit it and have a tiny bit of the leads poking through the PCB for soldering!

In the final desk test I could hear CW using the short length of coax to the dummy load/watt meter as an antenna.  Always a good sign!  And the rig produced 2-watts of RF.

So it worked first time – hurrah!

Now let’s get it on the air!

I plugged in my 40-meter dipole and I could hear masses of stations within the receiver’s passband, but unfortunately they were all engaged in an international CW contest!  I copied stations in 9A, SP, E7 and YO, so that proved the receiver was working very well.  And no sign of Droitwich long wave!

Just to check, I plugged in my Foxx 3 and there it was – a football programme over the top of those CW stations!

The Rooster definitely has a much better receiver! 

It also has masses of audio output but no volume control, so DON’T POWER UP WITH HEADPHONES ON!  I need to wear my ‘phones off my ears to reduce the volume.

As the connections between components are not visible on the PCB, I can’t see how to add a small volume potentiometer similar to the one on the Foxx 3.  Maybe someone at the Club will advise!

What are the lessons from this build?

Some of the components have solder-points in close association, so if your soldering is rusty – or you’ve never soldered – find or scrounge some Veroboard and components and practice.  Check continuity afterwards with a multi-meter set to resistance.

A narrow chisel-type soldering iron tip will work much better than something bigger.  It will provide more control where there are components near to each-other.

A temperature-controlled iron will also help with getting enough heat onto the big lugs of the antenna socket so that they have a good electrical and structural connection.

A dummy load is required.  One can be built from resistors, or there are also dummy load/watt meter kits for QRP rigs available.

The fittings that go through the front and back panels (eg DC input, RIT) must be aligned with the edge of the board.  I used the panel to make sure they were in the right place, and a bit of tape helped hold them in place until the first lug was soldered.

Overall, this has been a very enjoyable little kit to build.  It’s priced at £37.99 plus P and P and given it includes a metal case I think that’s a reasonable cost. 

It’s a good first step for anyone starting out with construction, and could then lead to the QRP Labs QCX-mini one band, fully featured CW rig (not crystal controlled!) currently at £44 plus £16 for the case plus P and P.

Once I’ve had a play with the Rooster on 7030 I’ll post an update on how it performs.

Thanks to the internet, it’s possible to listen on amateur radio frequencies without a special short wave receiver.

There are many WebSDR (Software-Defined Radio) receivers connected to the internet, allowing multiple users to listen simultaneously.  

A list of WebSDR receivers and links to them is at  http://www.websdr.org/   

To use WebSDR…

1. Navigate to a receiver like Hack Green, Cheshire (one of the closest WebSDRs to Birmingham) or KFS WebSDR in California (where you can listen in to the US amateurs).
2. Once on a WebSDR site, enable ‘allow keyboard’, which permits you to tune the receiver using mouse wheel or keyboard arrows.
3. You may have to enable audio settings on your browser – see the advice on each webSDR site; eg for listening to Hack Green using Chrome: Click the Lock in the address bar of your Chrome browser. Click Site Settings. Under Sound, select Allow.
4. Select the band you want to listen on – you will find most stations on 80, 40 and 20 meters, in the frequency ranges in the table below.
5. When listening on 80 and 40 meters, select LSB (lower side band); when listening on 20 meters, select USB (upper side band).
6. Once you hear a station, it may sound like ‘Donald Duck’ – tune slowly and the voices will become clear
7. Once you become proficient at tuning in stations, try some of the other receiver functions – e.g. narrow IF bandwidth and IF passband can be used to reduce interference.

Over the next few months, you can expect the following radio conditions:

CALL SIGNS

You can identify the countries from which stations are operating by comparing their call sign prefix (the first one or two letters/numbers) with those on the list of international call sign prefixes e.g. the Wythall Radio Club call sign is G4WAC – G means the station is in England. 

Q CODES AND OTHER SHORTHAND YOU MAY HEAR

You may hear the following…

CQ, CQ – I am calling for a contact; please reply to me

DX – long distance (normally, outside the operator’s continent)

QRZ? – is anyone there?

QTH – location of the station

QRM – interference on the signal

QSB – fading on the signal

QSL – confirmation of the contact or information passed

73s – best wishes and goodbye

GAINING AN AMATEUR RADIO LICENCE

The ‘Foundation licence’ is not difficult to obtain.  There is some simple electronics and radio operating to study.  You can find details of the licence levels and courses on the Wythall Radio Club web site and there is more information at the RSGB.

Visitors welcome at Wythall Radio Club’s famous ‘Plug and Play’ event on Saturday 9th Sept. between 10 and 3.

We’ll once again be operating various radios from Wythall Park, using a variety of antennas – and hopefully we’ll have some contacts via a satellite!

You can find us on the far side of Wythall Park, furthest from the car park.  Follow the tarmac footpath on the right hand side of the small playground, and keep going bearing right at any junction!

You’ll see vehicles, antenna masts and flags – that’s where we are. 

Here’s a report on a recent ‘Plug and Play’.

We are also holding an open evening for anyone interested in becoming a member of our Club, or in obtaining an amateur radio licence so you can transmit and make new friends locally and around the world.

The open evening is on Tuesday 5th Sept. from 8-9pm in the Darts Room, on the ground floor of Wythall House.  Follow the signs.

We’ll have some radios operating making contacts outside the UK, as well as members who can chat with you.

If you can’t make these dates, there are members at the Club most Tuesday evenings – email us to fix a date to visit at:  wythallradio@gmail.com