May 2015 From The President
Contents
1. Manage a Dynamo plus Hertzian Waves amp Wireless Telegraphy All of which would make sterling reading am sure but this document focuses on the then state of the art of telephone equipment an enormous topic in its own right The book makes a noble start in Its introduction The remarkable development of the art and practise of telephony which has taken place during the last decade and more especially during the last five years has necessitated the complete re writing and rearranging of the edition of this book published in 1895 Well it s true that technology does continue to change quickly lit is not too much to say that within the period mentioned there has been a greater revolution that has taken place in any other technical business at the same time In a bizarre twist exactly the same words could have been written a century later Still as with most civilisations at any given point in time there is a feeling that there is nothing much more to be done as everything useful has now been invented Whilst in the future there will no doubt be many improvements those made will it is believed more likely in connection with smaller details than with general principles unless some very great advance in automatic exchange working should lead to its adoption which however is not considered likely by the writer It appears that at this stage the author had not considered the advantages of building cameras into telephon2. VK3BFT VISTTVUT MmVVVV9 p a SREBEE d w a 5 ea an 35 Feaeae Steestesaatesesisecese 1 i TFT G r E d A 4 5 PRODUCT Pee ve G as CET JEER A Book Report By Ian Jackson VK3BUF Today found myself at the Moorabbin Hamfest sale where along with many others dug my way through various strata of pre loved equipment Before the pressing need for air forced me to the surface was able to find a book on a topic of interest dear to me So for five dollars was the new owner of The Practical Telephone Handbook as written by Joseph Poole figured that it was quite some time that had put together a book report and that this 533 page tome would be worth a bit of a look It is not what one would call a contemporary work as it was written in 1905 but fortunately it is the updated edition from the original 1895 release so there is a wealth of new technology to be seen in this new third edition which originally sold for six shillings A quick check with the Historical Currency Conversions website assures me that this amount has the same buying power as 42 16 USD in today s value or fifty four dollars and five cents in Australian tender So by this standard alone consider my new purchase to be a bargain So where to start The book is a hardcover printed in London by Whittaker amp Co who published many technical documents in the day such as Crappers Electrical Measurements and How to
3. message in the use of the language itself It is a chatty and well written prose that rivals much of contemporary documentation for its clarity Today it is not a book to be read cover to cover for its expert content but rather it is a benchmark of its time so that our rate of progress to now may be examined and perhaps to extrapolate our potential for advancement in the future Gippsland Gate Radio amp Electronics Club Inc AN INVITATION TO So TALLHOLDERS On Saturday the 18 of July 2015 the Club will be conducting its annual HAMFEST for the sale of new and used electronics and radio equipment As it was last year the venue will be at the Cranbourne Community Hall on the corner of Clarendon and High streets Cranbourne High Street is part of the Sth Gippsland Highway Melway 133 K4 The Club takes pleasure in offering you the opportunity to become a Seller at our 2015 event Forty tables will be available for stall holders but due to our NEW early table reservation system many tables have already been allocated Details can be found on our web page at http ggrec org au hamfest html e Table hire will be unchanged at 22 per table A limit of four 4 tables per Stall Holder applies Table Hire provides access for TWO people to operate the stall It will also include two tickets to the door prize and free tea coffee throughout the day e The 22 fee must be paid in full to the Club within 7 days of booking your table Cancellat
4. of you would be aware club subs are due and payable at the Annual General Meeting each year IF you have overlooked paying your subs all is not lost Payment will be accepted until 1 June 2015 It would be preferred if payments were made by EFT via your local branch of the Bendigo Bank The payments can be made to BSB 633 000 Account 146016746 and ask the teller to insert your callsign as the reference for your payment e g Subs VK3 Subscription rates have not changed Standard Member 40 00 Junior Member 25 00 Extra Family Member 20 00 and Pensioner Member 25 00 Alternatively payments will be accepted at the General Meeting in May or via snail mail addressed to Treasurer GGREC PO Box 1098 Cranbourne 3977 Regards Bryan VK3FOAB Acting Admin Sec Dear GGREC members At the April AGM the Following were elected unopposed for the 2015 2016 committee President Bruno Tonizzo VK3BFT Secretary Vacant Treasurer Graeme Brown VK3BXG Committee Person Wayne Cooke VK3XF Committee Person Rob Streater VK3BRS As you can see we have vacancy for a Secretary IF you were unable to attend the AGM and think you can spare some time to help out the Club please consider taking up the position of Secretary The position of Secretary is vital to the Club and needs to be filled quickly to ensure that your Club runs smoothly IF you think you have what it takes please reply to President ggrec org au Thanks Bruno Tonizzo
5. where the gear will be housed The internet connection for the IRLP will also have to be arranged It is important that whoever hosts the devices is aware of the ongoing costs involved New website Is still going well New business 1 Working bee for tomorrow 18 April This will primarily be to remove the satellite dish from the tower Bruno and Michael are currently available If others can attend that would be much appreciated Meet at 10 00 am Upcoming events May QRP Radio Show amp Tell together with a display of the oldest bit of gear you have in your shack June Antenna photo gallery Home Brew Award to be awarded in November Club shack power supply Paul VK3TGxX is continuing to repair the club power supply In the interim Bruno s offer of a replacement is still available After discussion it was suggested that the larger capacity unit might be better for the beacons while the old beacon p s could be used for club purposes Reduction of costs The club has just paid for its post box at the Cranbourne Mail Exchange for another 12 months Given the rising fees associated with the club post box together with increasing power bills consideration needs to be given to finding alternatives One suggestion was that lan VKSBUF be approached to see if the club could make use of his PO Box so that correspondence could be received in a timely fashion Investigations would also be undertaken to see if a bette
6. 00 and 8 30 just for chat and catchup on any news We have the mid year lunch coming up soon have you booked If not what s stopping you So together let s make 2015 2016 a great Club year President GGREC Inc P S Don t forget to pay you membership subscription Contents 3 Editorial 4 Plastic cancer Club subs due and payable 5 2015 2016 committee 6 A Book Report By lan Jackson VK3BUF 10 GGREC Hamfest invitation 11 10 meter CB conversion 12 General Meeting Minutes 14 Club Information Something missing YES YOUR content Send it in Event Queue May 15 General Meeting June 2 Committee Meeting S Prac Night Field Day Equipment 13th 14 Foundation Course and Assessment weekend 19 General Meeting 20 Mid Year Lunch Arthurs Hotel amp Restaurant Arthurs Seat July 3 Prac Night ai Committee Meeting 11 12 Gipps Tech 47 General Meeting 1g GGREC Hamfest August 1 2 Foundation Course and Assessment weekend la Committee Meeting 7 Prac Night 21 General Meeting 22 28 VI100ANZAC Activation From The Editor Well Finally got the club power supply back in order and re installed It must have been missed because as soon as it was in place several members immediately jumped on the HF rig For a long overdue HF FIX ON eA 5AT 240V 5AT 240V Now for some notes You will notice that the front panel has two power switches the first only turns on a pa
7. 296 532 MHz amp 2043 532 MHz Membership Fee Schedule Pension Member rate 25 00 Extra Family Member 20 00 Standard Member rate 40 00 Junior Member rate 25 00 Fees can be paid by EFT to BSB 633000 Account 146016746 e Always identify your EFT payments e Membership Fee s Are Due at each April Annual General Meeting Magazine Articles to editor ggrec org au or vk3tgx gmail com All other Club correspondence to secretary ggrec org au or via Snail Mail PO Box 1098 Cranbourne 3977 GGREC Web Site amp Archive may be viewed at www ggrec org au Facebook Page www facebook com GippslandGate 14
8. GATEWAY The Official Magazine of the Gippsland Gate Radio amp Electronics Club Inc May 2015 From The President The New Club year is up and running With the AGM over and done with well nearly done with as we still need a Secretary to complete the 2015 2016 Committee The secretary is a key position in the Club and need to be filled as soon as possible I m sure that there is one member of GGREC that can spare a small amount of time each month to keep the Club running efficiently would like to thank Graeme Brown VK3BXG continuing as Treasurer and Wayne Cooke VK3XF for helping out for another 12 months welcome Rob Streater VK3BRS to the committee I m sure Robs knowledge and guidance will be a great asset to the Committee Lastly a big thank you to Bryan Simm who put in a fantastic term as Secretary GGREC is an awesome amateur radio and electronics Club but it is all wasted if you do not join in and participate There is a saying that you get out of a Club what you put into it May s General Meeting is all about QRP operation so make sure you bring along your QRP radios and share some interesting stories with the rest of the Club If you don t have a QRP rig bring along your oldest amateur radio device This should be a bit of fun and can t wait to see what you bring along Sunday night s 8 30 PM GGREC NET has been going well with good support from the members If you can t make it call in between 8
9. a bell It seems that this company had little to do with the breakfast cereal manufacturer of the same name There are whole chapters on switchboards manual phone exchanges and party line operations It seems that telephony services were just beginning to take off as major employers of men and women but this ali was taking place alongside an impressive level of automation me ne development Resistance is futile Although the book is largely a technical document there are you will be assimilated interesting debates buried within the text lt has now become in many cases a serious question for discussion as to which is the better system to adopt the so called manual switching by human operators or the automatic system Although the automatic system has had and still has many great difficulties to overcome it has in America made such astonishing strides that it is likely to play a great part in the telephony of the future The penetration of this new technology more than a century ago was larger and deeper than had previously been aware of At the time of writing some 23 towns are working with automatic exchanges The largest is Chicago which is already operating upwards of 5000 lines and is arranged for a capacity of 100 000 lines Perhaps Bart Simpson thought he had invented the prank call at Moe s Tavern m looking for Amanda Hugankiss but this book succinctly highlights the issue from a long long time a
10. an audio test But the book makes no reference to Antonio Mecucci of whom it is now regarded as doing serious phone pioneering work in front of Alexander Graeme Bell Bell got some solid patents lodged first and usually takes credit for the invention He was a seriously clever man and it helped that his father in law Gardiner Hubbard that name again was a lawyer and the foundation member of the National Geographic society The book tells us it was Mr Hubbard who worked out that Telephonic Exchanges would gt be necessary and proceeds to describe how this guy figured Fie 18 out how to charge for phone calls If had atime machine it would be nice to go back and egg his house Are you the person in charge of Aarand Later on Bell did invent a type of metal detector but it wasn t very good as it couldn t find the assassins bullet wedged in the then president James Garfield who promptly died from his spontaneous incursion of lead not in the book Bell was renowned as being a great teacher who went on to marry one of his younger female students Hmmm When he died in 1922 all the phones in the USA were briefly turned off in honour of the man and they haven t stopped ringing since The book has many diagrams and pictures of early telephone microphones and speakers transmitters and receivers and spends a lot of time on the attributes of each type Lots of phone components were then built by the Kellogg Co does that name ring
11. cs sims a There is an interesting chart reprinted here Country rtm etephones iper por 100 describing populations and telephone penetration United States in i h 3 400 000 E 222 E 44 8 In 1905 German Empire 58 518 489 112 8 9 ii Soci aa j S gia Me a It too is worth a bit of a look Sweden A j 525 rie al ites Russie ue 85 60 000 2250 ait So what can we learn from such a document 110 i l b 3 2 50 a2 i i en 2 5 41 650 60 16 7 years later Certainly concepts problems and N 3 41 500 72 25 138 Holland 53 201500 180 5 36 technology that we thought was relatively new taly 32 i j f f Belgium 7 24 750 284 3 5 were already established back then The world in Spain 18 6 16 000 1160 86 we RA SR LS RE DR 8 1905 didn t yet Know of the ravages of global war just nasty local ones here and there A rich climate of innovation was in progress with a lot of people thinking very hard about technology and problem solving This tells us much about humans in general today see a wide perception that all useful technology we now covet was developed in the past ten years and everything technical before that time is useless and irrelevant which is of course a lie The building blocks of what we now use were all shaped a long time ago Our natural curiosity for how we got to here has wanned considerably and basics are forgotten Between the diagrams and technical details of the book there is another
12. es or last number redial Moving into the technical sphere there is an enlightening description of how there are two types of electricity depending on whether one is rubbed with silk or flannel but the latter tyoe may often escape if the rubber is not very careful This is not so much an ill informed description of electricity but a dumbed down introduction to those who wonder why it is so difficult to see this stuff with the naked eye There is a lot of solid data in early chapters on resistance of various metals and significant description of capacitive and inductive reactance with formulas It then covers much on magnetism electromagnetism and how currents flowing through wires generate these fields Battery technology descriptions seems to be a who s who of researchers with Hellese Obach Gasner Leclanche and Danniel Cells all getting rated on their efficiency and usefulness in the field The question of Who invented the Telephone is one often posed by people with too much time on their hands Many will instantly declare Don Ameche but he was just the guy playing Alexander Graham Bell in the 1939 movie when he sent Come here Watson to a young Henry Fonda This book does give credit to Philip Reis a German fellow who in 1861 made a crude device for sending audio over wires and successfully sent Das Pferd frisst keinen Gurkensalat the horse doesn t eat cucumber salad which sounds more like a press release than
13. go What is in practise has been found to constitute a very serious defect with the automatic system is that owing to its secrecy which is in itself one of the greatest advantages it is especially open to silly tricks of the practical joker who can operate by calling up any subscriber and give fictitious orders or use bad language but with little risk of being discovered This has become so serious trouble in some towns of the United States that special laws have been proposed to frighten the jokers The book introduces the concept of the rotary phone dial and elaborates in great detail on the dial impulse process A pivoted dial is provided with a set of finger holes numbered upward from 1 to 10 or 0 Then it proceeds to describe freshly implemented systems for automated exchanges called Strowger systems where mechanical banks and wipers create automatic subscriber links Many more chapters detail procedures to install underground and overhead phone wires in city and rural areas Pictures and diagrams show how to manually stand up tall poles with ropes and pulleys Rotary Dial phone The final chapter titled Miscellaneous Applications XXXI is an extraordinary one that describes some of the potential of this new technology It describes how networks may be used for fire and security alarms Trials had been performed on dual phone lines to give the listener true stereo sound for transmitted music at remote concert halls There were also
14. ions made more than 14 days prior to the event will be given a full refund by cheque e To make a booking contact Albert VK3BQO via email to hamfesit ggrec org au Payment may be made by sending a cheque or money order payable to GGREC to Post Office Box 1098 Cranbourne 3977 or by direct transfer to BSB 633000 ACC 146016746 lf paying by direct transfer please include your callsign name as the reference e When making a table booking Stall Holders will need to provide a Name Postal Address and Contact Phone Number with a Return Email Address if different to that in a reply Table requirements will include quantity and if 240v power is needed e Upon receipt of the 22 per table fee and contact details a Booking Number will be sent as a receipt of payment IMPORTANT No booking is confirmed until this number has been received by the Stall Holder e Access to the Hall shall be from 8 30am earlier if ready for Stall Holders and not later than 9 30am unless by arrangement e Transfer of your booking to another person is not permitted Please contact Albert if you cannot attend or wish to discuss your booking e The doors will open for buyers at 10am with a 6 00 entry fee Each year this event is a great success with many hundreds of people through the door in our large Cranbourne venue making it a premier event for radio markets in this state We look forward to working with you again 10 10 meter CB conversion Hi Everyo
15. ir of 240V sockets on the back panel it has NO effect on the 12V output and for the most part For now can be left turned off IF you want to use the HF radio etc you only need the second power switch Both Front panel fuse holders are LIVE with 240V and if you need the touch them then the power supply must be UNPLUGGED from the wall socket The Fuse holders are BEFORE the switches don t think you are safe by turning them off The front panel 12V binding posts are NOT intended for heavy loads have labelled them as 5A you can get more but expect some voltage loss Maximum output is about 33A V Back Pannel V Front Pannel Pad KSTGX Plastic Cancer Demise of the Door Computer IF you have tried to access the club rooms of late you will have noticed that the keyfob access system is down Well here is the main part of the problem the laptop used has literally Fallen apart IF you try and open any of the hatches etc ie remove the battery the you end up witha pile of crumbled plastic in your hands Unfortunately the electronics is not much better probably a pile of new capacitors in the power supply might have fixed it but it s almost impossible to work on as it just keeps crumbling in your hands I m not sure what has caused this other than old age however have a few computers much older than this that are still ok in the plastic department Pad VSTGK Dear Colleagues As most
16. ne As a Follow up from Prac night last week I have put together a list of specific 27 MHz C B s that can be easily converted to 29 MHz The list should be attached to the magazine email in PDF Format Editor VK3TGX There are a couple of very specific things we are looking For they are as Follows 1 The radios we are after were made by Cybernet in the late 70 s early 80 s 2 The main circuit board in the radio will have the manufacturers part number PTBM 049 on it 3 The radio will have 2 crystal oscillators in it and not 3 crystal oscillators very important 4 Stick to an 18 Channel or 40 Channel radio only not a 23 channel radio as these usually don t have a PLL in them there are a few exceptions 5 l ve had good success with the Midland 77 882 AM radio also have the service manual For this radio as well have also had success with the Midland 13 882 too a 23 channel set Note other 27 MHz PLL radios can usually be modified up to 29 MHz as well but haven t done the research or modified any of these radios For over 30 years so you will be expected to research it yourself By sticking to the above we only need to cut 2 tracks solder in 2 links and retune both RX and TX to get the radio working on 29 MHz Receive is excellent 0 35 uV for 12 dB SINAD on AM witha TX power output of 2 to 4 watts on AM depending on how many broken slugs there are IF you have any questions let me know would envi
17. ome issues with VK3RWD have been found A mod to the PA means that we are now getting 45w to the duplexer It is now running without faults The antennas are to be taken down to be fine tuned The beacons project is proceeding slowly and Rob is aware of the deadline to have them on the air but is hopeful that the work will be done within the timeline VISANZAC Commemoration At present we only have 5 people to operate the callsign for 7 days so if other people are available even for a short period of time it would be good to hear from them To kick off the day on 2 May we will have a display of wartime memorabilia If you have any gear for the display please bring it along Fox Hunt The fox hunt went very well with quite a number of members participating Thanks Albert for your work in organising it and scoring the results The EMDRC is looking at organising a similar event in future if participation in this event has wheited your appetite Eildon Weekend An enjoyable time was had by those who took part in the Labour Day long weekend excursion Fire extinguishers have been replaced but need to be installed in the shack Annual General Meeting a reminder that as tonight is our AGM subs are due GGREC Hanmfest At this point in time bookings are about half full which is gratifying to see Advertising is being worked on IRLP Equipment is to be collected and outstanding issues have still to be resolved e g
18. r deal could be obtained as far as our electricity bill is concerned Club calendar Yarn VK3NOV suggested that the event queue appear as a separate page on the club website as previously rather than being located within the monthly magazine Discussion to take place with Mark VK3PKT to see if this is feasible Meeting closed 8 45 pm Next Committee Meeting 05 05 2015 Next Prac Night 01 05 2015 Next General Meeting 15 05 2015 13 Club Information Meetings 2000hrs on third Friday of the month at the Cranbourne Guide Grant Street Cranbourne Prac nights First Friday in the Peter Pavey Clubrooms Cranbourne 1930hrs Visitors are always welcome to attend Office bearers President Bruno Tonizzo VK3BFT Repeater Officer Albert Hubbard Admin Sec Bryan Simm VK3FOAB Web Master Mark Clohesy Treasurer Graeme Brown VK3BXG Magazine Editor Paul Stubbs General 1 Rob Streater VK3BRS Property Officer Bruno Tonizzo General 2 Wayne Cooke VK3XF Secretary Vacant VK3BQO VK3PKT VK3TGX VK3BFT Call in Frequencies Beacons and Repeaters The Club Station VK3BJA operates from the Cranbourne Clubrooms 6m Repeater Cockatoo VK3RDD In 52 575 Out 53 575 CTCSS 91 5 70cm Repeater Cranbourne VK3RLP In 434 475 Out 439 475 CTCSS 123Hz VK3RLP Repeater supports Remote Internet access IRLP Node 6794 70cm Repeater Drouin VK3RWD In 433 575 Out 438 575 CTCSS 91 5Hz Simplex VHF 145 450 MHz FM Simplex UHF 438 850 MHz FM VK3RLP Beacons 1
19. sage that a Few of us get some radios first and then we can make a night of it would suggest looking For them at Hamfests Ebay and GumTree as a Start Also note the radio has to be working first before we attempt to modify it IF you get one thats not working let me know and it will mean a trip down to my place so WE can get it going Cheers Everyone and 73 Rob VK3BRS S ous Ee ne ses Por Pon BF GAIN TER va 11 General Meeting Minutes 17 04 2015 Start time 8 00 pm Location Club rooms Chairperson Bruno Minute Taker Bryan Present As per attendance sheet Visitors Nil Apologies As per attendance sheet Correspondence received 1 Renewal notice for VK3BJA received from ACMA 2 Notice from WIA re arrangements for ANZAC 100 program in VK ZL and TC 3 Notice from Bruno re participants and proposed program for VISANZAC from 2 8 May at GGREC 4 WIA Board Report 3 March 2015 5 Note from WIA re arrangements in place for amateurs to have AR access at Gallipoli ceremonies 6 Tax invoice from Annis Group re public liability insurance 7 Certificate of Currency for public liability insurance for the period 01 04 15 01 04 16 8 Notice from VK3BRS re prac night on 3 April Correspondence sent 1 Invitation to Secretary ALARA for members to attend mid year dinner on 20 June at Arthurs Seat Hotel 2 Notice to members re participants required and proposed program for VISANZAC from 2 8 May a
20. some rather ominous toys for the police to play with Another special use is that of checking the speed and the intercepting of offending motorists For this purpose lines are run along main roads in country districts and at various points provision is made for telephone sets so that two or more policemen may keep in touch with one another along any one line or connected lines at certain measured distances apart along the road By means of carefully timed and compared stopwatches the speeds of the motors between the points can easily be observed and the guilty ones brought to book Many military applications of telephones are described with references to the Boer War in South Africa and the Japanese using their phones when fighting the Russians The invention of the Telegraphone rates a special mention Phone conversations can be stored with wire recorders A bobbin with 3 and a quarter miles of fine wire can record a full 30 minute conversation This hardware may be used in conjunction with the Teleautograph which it says can use phone lines for sending SMS like messages to unattended phone points The Telegraphone The author even describes Simultaneous Telephony and Telegraphy which is essentially voice over data networks by keying the line polarity of working voice lines with CW impulses APPENDIX 21 TELEPHONE DEVELOPMENT IN The book then finishes with numerous VARIOUS COUNTRIES references charts and call density statisti
21. t GGREC 3 Notice from VK3BRS re prac night on 3 April 4 Notice from WIA advising that the TRAC want to know names callsigns of amateurs who will be on Gallipoli on Anzac Day Treasurer s report Graeme presented the financial reports for the period 15 March 15 April 2015 and tabled a copy for review by members If members wish to obtain a personal copy of the reports they should communicate directly with the Treasurer Read Graeme VKSBXG Moved Graeme VKS3BXG Seconded Leigh VKSFACB Carried yes New Callsigns Nil However Graeme VK3BXG indicated that two candidates were successful in obtaining their Foundation licences Congratulations Gerard and Aaron Previous Minutes Read as distributed Moved Seconded Approved yes Business arising from the previous minutes 1 Pub Lunch a reminder that this will be held at the Cranbourne RSL on 3 May at noon The Treasurer will be accepting 5 deposits tonight from those who want to attend Mid Year lunch A reminder to members that this will be held at Arthurs Seat Hotel on 20 June EMDRC Hamfest There was a good turnout of people at the hamfest and a wide variety of gear with some members managing to secure some bargains as they checked out the stalls 12 10 11 12 Hands free Kit We have struck an issue with the manufacture of the boards which has led to an unavoidable delay As soon as this is resolved the project will resume Repeaters Beacons S
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