Club Call G4HRS Est. 1938
The Journal of
Horsham Amateur Radio Club
March 2018
Affiliated to: Sponsored by:
1 Contents In this issue
3. Notes from the Editor Time for a quiz
4. And which gate? Alistair experiments
7. Portable contesting Radio sport
8. Bring and buy A trip to South London
9. Hunt the noise John does some DF-ing
13. URL Alistair’s radio wx forecast
14. Square eyed From MHz to GHz
17. Listen here David’s latest reports
20. Diary of events Full listings for the month
Cover picture: QSL for Canadian time signal station ‘CHU’ on 7850 kHz
Published by Horsham Amateur Radio Club HARCNEWS is produced at home by G4JHI
2 Editorial
Readers of this magazine have introduced a quiz ‘spot the difference’. You will have noticed that shortly after having received the February edition another version arrived. What happened was that one page had an image that was not visible in the final creation of the PDF file.
Having resolved that and multiple copies floating around another page got
‘corrupted’ and initially unnoticed which was sent out. I then sorted that out and emailed the correct version. I then had several emails from those readers who couldn’t find any different at all. Suggestions included ‘Must have been one of the pieces I didn’t read’ from Michael G4CCA and ‘Was the content of the second version the same as the first, the difference being in the layout of two pages per screen?’ from Richard G3ZIY. The Editor never tells his secrets but will advise you all that there was a difference!
David G4JHI
Copy deadline for emailed items for April edition 20th March - For written items the deadline is 17th March.
For items sent by email please send to this address:
2018 Subscriptions
Subscriptions are now due for the 2018 Club membership.
Please forward £15 to the Treasurer Paul G4TMC. Payment can be by cash, cheque (payable to H.A.R.C.) or via electronic transfer. Anyone wishing to pay electronically should send an email: paul.g4tmc
Postal address: Paul Barnett, 8 Parsonage Road, Horsham, RH12 4AR.
3 February Meeting
FPGAs by G3ZBU
FPGA PCB top side FPGA PCB under side The talk started with some examples of analogue electronic circuits e.g. amplifiers and radios, digital circuits e.g. alarms, keyers and digital frequency meters and finally circuits that used both techniques such as SDR ( Software Defined Radio ).
FPGAs ( Field Programmable Gate Arrays ) are digital integrated circuits that comprise of a large number of logic gates that may be programmed to perform the required function. They are much faster than microprocessors because the internal speed is typically over 250MHz and logic functions may be performed in parallel.
A modern SDR will be expected to have a 12/14/16-bit ADC ( Analogue to Digital Converter ) sampling that comes down an HF aerial at a rate of about 150MSPS ( Million Samples Per Second ) . Samples are fed into the SDR's FPGA which are then down-converted and filtered. Concurrently, the same sample can be fed into another part of the gate array and processed as a spectrum for a graphical display. In fact the same samples can be fed to multiple converters and filters if the FPGA is large enough.
The FPGA board demonstrated, including its programmer module, was purchased from China via a well-known online auction site for under £30, a couple of years ago. The master plan was to build an organ keyboard to MIDI interface, when I got the time. Each key would be fed into one of the FPGA's input pins. MIDI serial data would come out. This would generate far less QRM compared with the previous multiplexed scanning techniques.
This tiny board has an Altera/Intel Cyclone II EP2C5 FPGA, power supply regulators, 50MHz oscillator, boot E2ROM and connectors. The re-programmable boot ROM contains the fuse map information as is read into the FPGA on start-up. Inside the FPGA are 4,608 logic elements, 2 PLLs, 119,808 memory bits and 13 multipliers.
Logic Gates
Logic gates have a number of input pins and an output pin. The state of the output pin may be TRUE or FALSE, or perhaps 3V or 0V, and it depends on the state of the inputs to generate the logical function. The common functions are AND, OR, NOT, NAND, NOR and XOR: NAND is an AND gate with an inverted output.
4 Before microprocessor and micro controllers became popular, most electronics consisted of boards of the gates. Designers had to learn about the available chips e.g. 7400, 7447 and 7490, and their variations in speed and voltage e.g. 74HCT00, 74AC00 etc. As many of these ICs had 14 or 16 pins, multiple gates were put in each IC. The 7400 has 4 NAND gates. This can lead to wasted components as you may only need one NAND gate but you have to buy 1 and get 3 more free.
In 1978 the Programmable Array Logic chip was invented. It had a larger pack with fuses used to select the logical functions of each output pin individually. So a designer could have an IC configured with a programmer to his exact specification. Instead of having loads of drawers of different ICs, one could almost reduce that to one large box.
There were a few disadvantages though: high power supply current, not re-programmable and the blown internal fuses would sometimes reform which was a disaster. Various improvements were made over the years so the latest programmable logic devices could be driven from the power of a grapefruit!
FPGAs take the programmable logic device up several key steps: firstly the addition of internal functions such as PLLs, memory, multipliers and even CPUs, and secondly a far greater amount of programmable logic gates. The EP2C5 is the smallest of the Cyclone II series and that has 4,608 internal gates!
Designing with FPGAs
For the EP2C5 one can use Quartus II V13.0 SP1, 32-bit version. This is free, but large. In fact everything in the FPGA world is large: the IC manual is 450 pages and the Simulation manual is 1,500 pages. The exception to large is the ( surface-mount ) leg spacing, so it is best to get a ready- made board. There is a 64-bit version of the software but that was not working with the Byte-Blaster USB programmer. If you buy the board plus programmer now, it may well have been updated. Anyway, the 32-bit software works perfectly well on this 64-bit PC.
Quartus II allows you to enter designs in many ways, but the three most popular are VHDL, Verilog and Schematic entry. The Verilog is a bit like 'C' so Arduino-users will be happier with that as opposed to the ADA-based VHDL language. Schematic entry is the easiest and I showed a design that was made of AND and OR gates to control a pump to water the garden. A pull-down window offers all logical functions such as OR, AND etc and also all the 7400-family parts. Very useful indeed.
Just as one can download useful things to run on the Arduino and Raspberry-Pi, FPGAs are the same. To prove this; I downloaded a Verilog Keyer by KG8IH. This 'software' was cut and pasted into Quartus II. I also cut and pasted a piece of demo software to flash the leds and divide the 50MHz clock down to approx 1kHz for the keyer. Finally I told Quartus II pin planner which pins I had wired the 'dot' and 'dash' key to, and its output for a speaker. It all worked perfectly.
In fact by performing a 'cut and paste' on just one line of the top level Verilog file, you can get two keyers. Every subsequent paste will make the compiler generate yet another keyer instance. In fact you could easily run 20 keyers simultaneously in this FPGA, and each would run at full speed. As to speed, I estimate the maximum speed each keyer could run at as being about 100 million words per minute!
Finally, SDRs seem to require about 10,000 logic elements and this is the size to use if you wish to try a soft CPU, where some of the internal logic elements are configured to behave like a processor. Boards that are suitable are generally over £100. The Zync family look quite useful.
5 The evening ended with a short film about the current work project which will cut off the domestic water supply in the event of an 'escape of water'.
Veroboard with FPGA pcb mounted and Button for keyer and / or garden water wire-wrap connections controls
Byte-blaster programmer
6 CQ Contest
I have been asked by a couple of HARC club members if we are going to take part in a portable field day style contest this year as we have in the past. At the moment the HARC committee have an open view regarding portable contest this year.
Although in recent years HARC have been successful in the QRP section in HF NFD (CW contest) thanks to Peter G3LET operating the contest single handed for 24 hours and of course the HARC team who set up the stations before and after the contest, this year, Peter is taking a well-earned rest and as a result HARC currently are not proposing to enter HF NFD in June this year.
But if we get the support it is possible that we could put an entry in for SSB Field Day in the QRO section or the 144 MHz Trophy Contest, on the first weekend in September, both of which are of 24 hours duration. If you are interested in getting involved in either of these contests, either as an operator or setting up, please let me know your preference by the April club meeting.
Depending on the number of volunteers and the preference shown, the committee will decide which contest to enter and at what level, be that a contest for the experienced operators with a will do to well, or just a fun event for those wanting to gain experience. Remember we need a minimum of 6 to 8 people, preferably more who will guarantee to be available over the contest weekend to make a contest entry viable.
Please let me, or any member of the committee know if you would like to take part.
Adrian G4LRP
7 For Sale and Wanted
If you or anyone you know requires any quartz crystals or ceramic resonators I manage two organised banks of crystals, one belonging to the Crystal Palace club and one of my own. See:
Item C11 in the Sale of Club Equipment on web site: http://cprec.btck.co.uk/ and
Wanted and For Sale on web site: http://www.g3oou.co.uk
Click on the addresses or copy and paste the addresses into your browser address field. Both lists are downloadable as PDFs. Use Control F to search each PDF.
All prices exclude post and packing.
73
Bob
Bob F Burns G3OOU, G-QRP 6907, @BobFBurns Crystal Palace Radio & Electronics Club: http://cprec.btck.co.uk/ Technical web site: http://www.qsl.net/g3oou
8 Frame Antenna’s and their use for locating QRN on Top Band
by John Matthews G3WZT
Those that attended the January club meeting "bring and tell" will have seen my frame antenna that was constructed specifically to try and locate high levels of interference from my QTH on 160M (Top Band).
This RF interference was first observed in the 1.8 - 1.9MHz Amateur Band at the beginning of November 2017. It is not known when the problem started as I only tend to use 160M in the Winter months for DX working. What is known, is that it did not exist over the winter periods of 2015 and 2016.
Further observations using both analogue and digital SDR receivers showed that the interference extends over the frequency range of 1.1 to 2.1MHz with a well defined peak at 2.07MHz. It is continuous, 24 hours a day, 7 days a week although short breaks have been observed, although not over the last few weeks. Unusually, short periods of fading (QSB) can also be observed.
The demodulated spectrum at 2.10MHz shows a well defined 300Hz component with high harmonic content every 300Hz. This is clearly shown in the small left hand window of the screenshot in Figure 1.
The larger spectrum window clearly shows the peak at 2.070MHz and also a gradual fall off in level as the frequency increases. For this I use the SDR Play SPR1A receiver and SDR Consul (V3) software.
Figure 1.
As this level of interference it makes the 160M amateur band pretty much unusable with a common transmit and receive antenna, I decided to try and direction find the source of the interference with my custom made frame antenna.
9 The frame antenna is 8 turns of Litz wire, 55cms on each side with a balanced JFET pre-amplifier attached. This is shown in Figure 2. Having proved that the set up had sufficient sensitivity and directivity attempts were then made to Direction Find the source in conjunction with a small portable AM receiver.
Figure 2.
To give an idea of the QRN levels heard here at West Grinstead on a 160M Marconi T antenna, a screen shot of my Icom IC-7600 is shown in Figure 3. No internal pre-amp and no attenuator in, mode is AM.
Figure 3.
10 Now back to the Top Band DF hunt.
Earlier attempts to locate this problem had led me to believe that the problem was being radiated from the telephone system, maybe from a noisy power supply in my nearest neighbours house. This was a bum steer as a local power cut left me with the interference at the same level!
Initial attempts on foot from my home location (TQ 179 216) gave consistent bearings in an Easterly direction, however after 1.5km plodding across fields, the bearings continued consistently on an Easterly heading.
At this point it was clear that the interference source was not local and the best solution would be to try Direction Finding the problem from a car. A number of locations were tried and at this point it was obvious that the source of the interference was getting louder the further East from my home location that the bearings were taken.
A number of bearings were taken from various locations around the area with sufficient locations used to give a sensible pin point of the interference source. These included Henfield, Partridge Green, Warninglid, Bolney, Lower Beeding and a few more. More importantly it was audible at all of these locations.
The DF plots taken using the frame aerial were overlaid onto Google maps and are shown in Figure 4. It can be seen from this that a number of bearings were taken at a distance of 6km or more and in fact can be observed beyond 10km from the suspected source of the interference.
Figure 4.
The "apparent" source of this noise is the National Grid 400kv Bolney sub station located at Twineham Lane, BN5 9AZ.
It would seem that this is radiated interference and not conducted over the power line infrastructure as at no time did I observe bearings that were not in the general direction of Bolney Twineham sub station.
It is interesting to note that this problem did not exist over the Winter of 2015/6. Since that time the Rampion offshore wind farm has come online. This is a 400MW wind farm 13km off the coast of West Sussex and is fed into the Bolney Twineham sub station. I am unable to find written evidence that this is fed in as high voltage DC (HVDC) but it almost certainly is. This requires a rather large
11 400MW DC to AC converter.
To give an idea of the magnitude of the components involved, shown below is a part of the e.on Rampion design statement for the "SGT" (Supergrid Transformer) at Bolney:
The SGTs are used to step up the offshore wind farm transmission voltage to the 400kV required to export the offshore wind farm power to the transmission system at Bolney substation. The indicative size of each of the 2 units is 6m by 16m by 10.5m high (to the top of the bushings).
If you are into big filters, try these for size!
The likely maximum dimensions for key equipment within the substation compound are as follows: Transformers: 6m wide x 16m long x 10.5m high Reactors: 4m wide x 7.5m long x 7m high Filters: 20m wide x 22.5m long x 8m high.
Conclusions The Top Band frame aerial certainly seems to do the job and has almost certainly found the source of my interference although I did not believe that it would be 6.5km away from home. It certainly extends out to 10km, especially at the noise peak around 2.070MHz. This means it is affecting around 80 square km of the West Sussex countryside.
If you live within 10km or so of Twineham see if you can hear it, but first and foremost you must ensure that your own house in order. Listening for this noise if you have noisy SMPS wall warts or plasma TV's in the house that obliterate top band anyway can easily mask what is coming in on your antenna.
Tune up your antenna on 160M, tune to the peak for the QRN at 2.070MHz, switch to AM and listen.
At Robin G3OGP's QTH we used the frame aerial to DF his source of top band QRN and it seemed to be coming from the house. To cut a long story short it turned out to be a SMPSU in a TV distribution amplifier in the roof and a secondary problem with the SMPS running the main station rig! No QRN from Bolney in the Haven but that is 19km away, however it can be heard by Adrian G4LRP in Southwater at 10km distant.
As a final comment I did try the Ofcom route, but unfortunately they are not interested in anything that is broadband in nature and the case was closed within a few days. They stated, "you have not provided evidence of harmful interference to two way communication". "The case is closed". We do not pay for our amateur licence now and the Ofcom service seems to match the cost.
Thankfully the RSGB, and in particular David Lauder G0SNO seem to be interested in the case. If you have not read it, the piece written by him in December RadCom on pages 38/39 makes interesting reading.
If this RFI investigation does go any further it will certainly be David versus Goliath, and I feel in this instance, that Goliath may well win the battle.
Top Band DF foxhunt anyone?
G3WZT. January 28th 2018.
12 Web Trawl
by Alistair G3ZBU
HF propagation information - some useful links
Realtime band conditions web site http://www.bandconditions.com/
The purpose of this experimental Web site is to provide 24-7-365 actual (REALTIME) band condition information to CW QRPp, QRPe and CW/SSB for Contesters interested in increasing their scores. It can also be of benefit to other Radio Amateurs to determine band conditions for Nets and casual QSO’s. This information is NOT based on any software predictions or any kind of satellite based readings. It is based on a new Ionospheric sounding method called “HF Ionospheric Interferometry” which operates very similarly to the PolSAR system used by NASA. lso, check out the VOACAP predication Web page at: http://www.voacap.com/p2p/index.html
A daily HF radio wave propagation forecast can be found at: https://www.facebook.com/thomasfranklingiellaw4hm
Also on Twitter: https://twitter.com/@GiellaW4hm
13 TV Addict
by David G4JHI
Freeview Retune continued
Wow… what a response about a TV rescan! I’ve had various reader comments about this at the club and committee meetings, also emails arriving on the subject.
Richard G3ZIY has advised the following: “Regarding the article about TV retuning, and determining which aerial group antenna you have, most manufacturers plug the end of the boom with a coloured bung, which can be spotted from the ground with binoculars etc. Couldn’t find out what the ‘T’ group colour was though.”
The following links provide further information. https://www.tlc-direct.co.uk/Technical/Aerials/Aerial_Selection_Guide.html http://aerialsandtv.com/aerials.html
Following the retune at the Haslemere transmitter which is a relay and has been transmitting a Freeview light service, from March 21st the same day that some other transmitters are making retunes an additional three multiplexes will be switched on providing more channels which will then be the same as from Midhurst. In the analogue days I could pull Haslemere in on an indoor TV aerial. Prior to switch on of the UHF service from Haslemere it was possible to DX and receive ATV or maybe it was Central TV then from the Ridge Hill transmitter near Hereford during lift conditions.
It has been noticed that ITV3 is moving from the Com4 to PSB2 multiplex. This will make the channel more widely available to viewers who receive the Freeview Light service from some relays. At the time of writing tests were being made at various transmitters including Midhurst and depending on when the full change actually happens it will make information given in this magazine last month out of date. See the following link. http://www.a516digital.com/2018/01/test-transmissions-space-for-more.html
14 Satellite
You may have seen a news item in the media about Sky launching a full TV service without the need for a satellite dish and delivery by the Internet. There has been much discussion on the Digital Spy forums regarding this and some viewers trying to find out when they can throw away their dish and when is it going to launch from those who cannot put up a satellite dish. This news item ended by a statement from Sky that they are not stopping broadcasting via satellite.
The reason for having this new product has come about due to the popularity of streaming services and competition from other providers such as Amazon Prime and Netflix. The Now TV service has been around for a while and already provides a selection of programmes from Sky and is available via their own box, smart TV’s, Xbox 360 and there are other ways to get it too. The new service which is expected to be launched in the UK during 2019 will be available by using a Sky Q box but this might be a different model to the version for satellite reception but that isn’t clear yet.
Nor is whether the new service will be available to everyone or only those who use a Sky broadband package. Sky already broadcast via satellite in some other European countries and Austria followed by Italy will be the first for trials in a full Sky Internet service. In order to get a good service especially if one wants to watch in HD is a fast Internet connection and the new service won’t suit everyone under the present speeds in some areas of the UK.
One thing of note is that Sky Q receivers are ‘loaned’ to viewers when you take out a subscription and to be given back to Sky if you stop subscribing which is different from past receiver options such as with Sky+ etc. One final note about this TV provider is that various idents have been seen during advert breaks on Sky One. These include skittles, popcorn and MCW… yes Morse code. Here is what you can hear: … _._ _._ _
Moving on I have recently had a handful of email from readers of this newsletter since they found details of my Wave Frontier dish reviewed in HARCNEWS February 2010. Oh yes my specialised satellite dish! It’s still there and requires little maintenance but the occasional clean is a good idea and receives over 4000 channels!! Even with that I don’t watch any more TV than I did when we had 3 channels!
Once you have found the channels of interest just put into the favourites menu and away you go! The main problem with a system such as this is that channels are often moving frequency or in some cases going QRT which means regular scanning. I usually update about once every 6 months or more or when I find channels are not working since it’s time consuming! If you have a set top box from a service provider such as Sky in the UK or say Canal Digitaal in The Netherlands as an example these receivers automatically update the EPG as changes are made so no issues there.
If you’re interested in getting a European TV system I suggest you invest before too long as one day we may well find TV being distributed by other means and the satellite TV fun will have gone forever! There is popularity of foreign TV packages by ex-pats or those who understand other languages and official cards can be bought from UK suppliers but in some cases will be expensive. Some European TV channels still provide teletext and programme listings usually start at page 300.
15 In the case of the French / German channel ARTE the TV guide for the German programme is page 300 and for the French programme page 400. However only the German service carries teletext and each channel is on a different satellite!
Here is a selection of channels that offer English soundtrack or subtitles in this language to be found on the most common satellites.
ARTE (Francais) DW English MTV Germany (This has recently become a free to air service since encrypting in 2011 – see the following link) https://www.rapidtvnews.com/2017121550109/mtv-launches-on-unencrypted-fta- in-germany.html#axzz563xpzWbR NHK World TV Nickelodeon (Germany / Austria) Servus TV Deutschland CGTN S4C HD TV5 Europe
VoA TV Europe
16 Broadcast Listener
Monthly Roundup by David Ansell 2E0NKC
All times UTC
A reminder that BST starts Sunday March 25th and clocks go forward 1 hour. Some stations will QSY to higher frequencies and to allow for the time change in Europe some stations will adjust schedules 1 hour UTC earlier.
Tropical Short-wave band (5100 – 3200 kHz approx.)
Late afternoons and early evenings brought some interesting listening lately. National Public Radio of Armenia heard with Id in Armenian as “Yerevan Khosum” followed by national anthem and programme in Kurdish. Transmitter site is Gavar. At 17:15 it switched to Azeri. All language transmissions from Armenia start with their national anthem. Please note that with the exception of Armenia all these transmissions on tropical band are domestic.
All India Radio, Hyderabad heard under China National Radio, Golmud on 4800 kHz at 16:45 with Indian songs. Tajik Radio, Dushanbe, Tajikistan heard in Tajik on 4765 kHz at 17:00 with weak signal. All India Radio, Thiruvananthapuram heard at 17:00 on 5010 kHz. This is on the South-west tip of India. Xinjiang Peoples Broadcasting Service, Urumchi, China heard in Kazak (?) at 17:05 on 4500 kHz in parallel with 6015 kHz.
China Tibet Broadcasting Service heard at 16:00 in English with the “Holy Tibet” programme on 4920 kHz with QRM from All India Radio and on 4095 kHz with utility QRM. Both frequencies in parallel with 6130 kHz (clear frequency). All India Radio, Chennai (on South-east coast) heard under Tibet on 4920 kHz. Echo of Hope, Hwaseong, South Korea heard at 17:30 on 4885 kHz in Korean to North Korea. Voice of the People, Goyang heard at 16:50 on 3930 kHz. Jamming was audible underneath.
These two South Korean stations are run by the South Korean National Intelligence Service (source World Radio TV Handbook. In the mornings Radio Redebele, Cuba heard at 07:45 on 5025 kHz and Radio Habana, Cuba on 5040 kHz in Spanish. Radio WWCR, Nashville heard at 08:00 on 4840 kHz with English religious programme.
Medium-wave
As reported last month several BBC MF transmitters have closed. So what can be heard on the vacated channels? On 1485 kHz Spain audible after dark along with 774 kHz. On 1602 kHz Desi Radio which is a Panjabi community station in Southhall, Middlesex with just 70 watts ERP. On 1368 kHz vacated by BBC Sussex after dark Manx Radio, Foxdale, Isle of Man is a good signal. It is the first commercial station ever in the UK.
17 Its local ads are interesting and I even heard details of a forthcoming funeral! On Tuesdays at 21:00 is a nice folk music show. Manx Radio’s transmitter has recently been renovated. Well worth a listen! Signals from Radio CJYQ, St. Johns, Newfoundland, Canada made it to my QTH on January 19th at 22:00. This is a local commercial station on 930 kHz. Voice of Armenia, SAO Tome, Africa heard at 20:45 on 1530 kHz with “African Beat” music.
Trans World Radio, Bishkek, Kyrgyzstan heard with “jingle”and Uzbek programme at 16:45 on 1467 kHz. By the time that you read this there will be too much daylight to hear this DX. China National Radio, Xingyang heard at 17:00 on 1377 kHz. RAI Uno, Pisa, Italy (famous for its leaning tower) heard on 657 kHz at 15:30 with sports commentary. Radio Romania Actualitati, Lugoj heard with several Id’s on 756 kHz around 15:50.
Gander Radio, Newfoundland heard at 20:50 with wx reports on 6605 kHz USB. BBC French service heard at 12:00 on 17640 kHz via Ascension Island with “BBC Midi” programme. WRMI, Okeechobee, Florida heard with Id at 22:00 on 7780 kHz with Voice of America news at the strange time of 22:08. Time signal station CHU, Ottawa, Canada heard late evenings on 7850 kHz USB (see separate item). Voice of Turkey has English 19:30 to 20:20 on 6050 kHz.
Radio Thailand, Udorn Thani has English at 19:00 and 20:30 on 9390 kHz. These broadcasts are produced by the Public Relations Department of The Royal Thai Government.
QSL-‘s received
GB4RS 3761 kHz – card for report sent to the President of the RSGB who has privilege of using this callsign during his two year presidency
CHU, Ottawa, Canada, Time signal station 7850 kHz – card (see separate item)
Trans World Radio, Bishkek, Kyrgyzstan 1467 kHz – QSL showing TWR antennae and quoting Psalm 57 Verse 11. QSL posted from California, U.S.A !
Radio Free Asia, via Dushanbe, Tajikistan 15745 kHz – QSL commemorating the 2018 Winter Olympics in pyeongchang, South Korea - shows a panda wearing a winter cap
18 19 Diary
Mar 1st, Club Night: Junk Sale
Mar 5th, 80m Data Club Championship 20:00 - 21:30
Mar 6th, 144MHz FMAC and UKAC 19:00 - 22:30
Mar 8th, 50MHz UKAC 19:00 - 22:30
Mar 11th, Dover Rally - Whitfield Village Hall 10:00 - 13:00 http://www.darc.org.uk/index.php?page=dover-radio-rally
Mar 13th, 432MHz FMAC and UKAC 19:00 - 22:30
Mar 14th, 80m CW Club Championship 20:00 - 21:30
Mar 15th, Social Evening: Queens Head - Barns Green http://www.thequeensheadbarnsgreen.co.uk
Mar 22nd, 80m SSB Club Championship 20:00 - 21:30
Mar 24th, HARC Spring Trip - Brooklands Museum Mercedes Benz World
Apr 2nd, 80m CW Club Championship
Apr 3rd, 144MHz FMAC and UKAC
For details on the above contests use this link and follow to the appropriate section http://rsgb.org/main/radio-sport
All above times are UTC
Committee/Club Meetings and Socials start at 20:00
20