The
RADARS Website
Recent Talks
April 07 - The SBS1 Virtual Radar System. Dave G0PUD
February
- Manufacture of printed circuit boards for home construction. Alan, G4VVT.
March - RAYNET.
The radio amateurs emergency communications network.
A talk by the County Controller
for Gtr. Manchester, Jon Mossman
April
Repeaters and the Internet.
A talk by Dave, G7OBW and Graham,
G4HFG
Cricket Club meeting dates 2007 (no RADARS talks)
14 May
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28 May
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11 June
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25 June
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9 July
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23 July
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6 Aug
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20 Aug
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April 2007. A Talk and Demonstration by Dave, G0PUD
The SBS1 Virtual Radar System’…or … How to spot planes without leaving your house!!
An explanation of the Kinetics Aviation virtual radar system which enables you to track in real time the height,
speed and direction aircraft from up to 200miles away.
How it works, how much it costs, how it links with other systems, and how to get the best out of it…
Held on Monday 2nd April 2007 @ 8.15pm
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| February
- Manufacture of printed circuit boards for home construction. Alan, G4VVT.
Alan gave an excellent talk and demonstration
showing in detail the processes involved in making a simple PCB.
Using either the more eloborate technique involving photoresist coated
copper boards, exposed under UV lighting through the PCB drawing, developed
then etched in Feric Chloride solution or simply drawing the circuit directly
onto a clean copper board using a permanent marker pen, Alan succesfully
demonstrated the manufacture of a simple PCB.
| A typical, hand drawn, board is shown here
using permanent marker pen directly onto the board.
This is in fact the EHT board in the PSU for the
club's linear project produced shortly after Alan's talk |
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March
- RAYNET. The radio amateurs emergency communications network.
A talk by the County Controller
for Gtr. Manchester, Jon Mossman
Jon gave a first class talk covering many aspects
of RAYNET, the Radio Amateur Emergency Network.
He detailed the sort of jobs the group has been
called on to do, particularly in support of the 'blue light' emergency
services and covered the equipment used leading to the state of art ASP
systems which link GPS and radio to provide an accurate and up-to-date
location beacon of individual stations in the group.
He also covered the more routine aspects of the
service in providing check-point cover and information relaying back to
control during charity events - such as the University 'Bogle Stroll' where
hundreds of students attempt the 55 mile walk from Manchester to Blackpool
to raise funds for charity.
| Here's Jon with some of the poster displays he
brought along to the talk |
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RAYNET Zones for Greater Manchester
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Operating stations for RAYNET
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Support by RAYNET for a charity walk event
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| April.
Repeaters and the Internet.
A Talk by Dave, G7OBW and Graham,
G4HFG |
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This was a first class talk/presentation which took
us through the whole background of repeaters in the UK, their development,
construction and running costs. It was particularly interesting to hear
of the current problems with site rental, now soaring because of the demand
for such good coverage locations by commercial users. [Any amateurs
out there with a good location to rent ??]. The simplicity of
the repeater design was surprising, with much 'home-brew' techniques in
evidence, but the difficulty of transmitting and receiving simultaneously
on the same antenna appeared to involve rather expensive commercial equipment
- which obviously added considerably to installation costs. The cavities
used on GB3MP for example, at more than £1800, made up for well over
half the total installation costs of a typical site (average £2500).
Graham then took us through the recent developments
with interconnections between amateur stations, repeaters and the internet.
This allows, for example, a mobile operator on 70cm in the UK to talk (via
their local repeater, the internet and the hosts local reapeater) with
a similar mobile station in the USA, Australia or wherever. Safeguards
are built in to ensure compliance with UK licence regulations and the connection
between radio and the internet is under constant monitoring by the controller
both in the UK and the person to whom they are connected.
All in all a most fascinating evening and very
much appreciated by everyone who attended.
Further information on: www.btinternet.com/~g4hfg
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