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A Fox Hunt After Many Years On VHF 144.220 MHz 7th April 2012

The RSSL is happy to announce a long awaited radio sport of locating a hidden transmitter. Jaliya 4S7JL has gone to great lengths to get things going and let’s all chip in and extend our support. An HF direction finding competition will also follow very soon. Since we have more VHF band amateurs and also it is a little less complicated than HF, we are starting on this.

It should be great fun, so get your maps, and antennas ready to take bearings and hit the trail on the 7th of April, thats just one month from now.  Unlike in the olden days when maps were not easy to come by and information sketchy, the internet will give you a lot of info about direction finding.  It i also good to test your skills as we hear intruders on our VHF band from time to time who appear to be unauthorized people.

Participation free of charge. Please confirm your participation on or before 30th march 2012 to 4s7jl@rssl.lk or 0772378108

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Modern Communication Technologies by Kusal Epa 4S7KE

Modern Communication Technologies gives an overview of new and emerging communication technologies of recent times. It introduces in simple language communication technologies and provides additional technical details in brief for those who are more interested in the technical aspects.

The following Analogue and Digital communication technologies are explained in this book.

Mobile phone networks, Mobile phone features, Evolution of Mobile Phone Networks,Wireless Mobile Broadband – GPRS, HSDPA, HSUPA, GSM,3G UMTS, Long Term Evolution (LTE),Satellite Phones, Femtocells, CDMA,Wi-Fi, Bluetooth, WiMax, ADSL, ISDN, Leased lines, Fibre Optic communications, Metro Ethernet, FM Radio, Digital Audio Broadcasting (DAB), Satellite Radio, Television, Digital Television, Satellite Television, Cable TV, IPTV, Internet, Voice over Internet Protocol (VOIP), SIP (Session Initiation Protocol), Dial Up Modems, GPS Navigation system, Trunked Radio, Cordless Telephones, Facsimile.

34 Chapters, 190 pages
Price Rs. 450.

Available at LakeHouse Bookshops.
Can be ordered online from
http://books.lk/product.php?productid=38220&page=1

LakeHouse Bookshop
http://www.lakehousebookshop.com/pdesc.php?id=1320

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Stono repeater back on the air 145.000/145.600

As members would know  this repeater which was the first to have been installed in Sri Lanka in the early 1980s at the OTS tower has had a long history. From the OTS tower it was moved to Oliphant Estate Nuwara Eliya where TNL is located. This was later moved to the HNB Towers and then to Gongala.  It was severely damaged in  Gongala by lightning and  was brought down to Colombo.  4S7LF who has vast experience at Stono as one of their senior engineers,  was able to restore it back to its original state.  However,  it needed a new 24v power supply and a controller unit.   We wish to thank Ron 4S7RO and Rohan 4S7RL for designing a controller unit and building it locally to highly professional standards for their home brew repeater, which was under test some months back, which has been made available to the RSSL for this repeater.

Since the 10th of February the repeater is under test. It is carrier operated and gives the station ID 4S7RS, courtesy  pips, and can be shut down when needed remotely.   Temporarily, it is connected to 4S7ROs  Yagi and is directed towards Colombo.  The direction is changed from time to time during the test period.  It is hoped to go up either at HNB Towers or at Nuwara Eliya after the test period. Please try to check in and give us reports.  The repeater runs at 3 watts.

We record our appreciation of Leo 4S7LF, Rohan 4S7RO and 4S7RL Rohan for their untiring efforts to get the repeater back on the air.

73′s
Hony. Secretary
Victor Goonetilleke 4S7VK
4S7VK@rssl.lk

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Echo Link

ECHO LINK

The Radio Society of Sri Lanka received a donation of equipment to run an Echolink node in Colombo immediately after the Tsunami of 26th December 2004 from radio amateurs in the USA. It has been serving Amateur Radio in Sri Lanka ever since with occasional outages when there were computer breakdowns. Since last evening net time, the Echolink is functioning thanks to our Echo-link coordinator 4S6ABC Bharath. Please check it out and let us have your feed back.

73′s
Hony. Secretary
Victor Goonetilleke 4S7VK
4S7VK@rssl.lk