practical wireless số 2005 01

January 2005 £3.00 pwp practical wireless-britain’s best selling amateur radio magazine New Series Oscilloscope Basics A Lifetime In Radio Fre Judd G2BCX fishing for frequencies fishing for frequencies New Series Oscilloscope Basics A Lifetime In Radio Fred Judd G2BCX G3RJV’s 7MHz Tu a Ti Trans itter G3RJV’s 7MHz Tuna Tin Transmitter [...]... G1EFL Tel: (012 45) 469008 E-mail: info2005@g0mwt.org.uk Website: www.g0mwt.org.uk q DAB NEWS Sanyo Joins Digital Race Sanyo has launched its first digital radio, the DC-DAB01 Radio Micro hi-fi system which enables games consoles to be fed through the system Sanyo aims to introduce a whole series of digital radios in the coming months Features of the DAB01 include: T Practical Wireless, January 2005 q Audio... DISCOUNTS Practical Wireless, January 2005 MD-24 HF or VHF/UHF internal duplexer (1.3-225MHz) (350-540MHz) SO239/PL259 fittings £22.95 MD-24N same spec as MD-24 but “N-type” fittings.£24.95 MX2000 HF/VHF/UHF internal Tri-plexer (1.6-60MHz) (110-170MHz) (300-950MHz) .£59.95 CS 201 Two-way di-cast antenna switch Freq: 0-1000MHz max 2,500 watts SO239 fittings £14.95 CS 201- N Same spec as CS 201 but... GRP-200 2.0" OD Length: 2.0m Grade: 3mm £29.95 MGR-3 3mm (maximum load 250 kgs) £6.95 MGR-4 4mm (maximum load 380 kgs) £14.95 MGR-6 6mm (maximum load 620 kgs) £29.95 Practical Wireless, January 2005 Please mention Practical Wireless when replying to advertisements RG58 best quality standard per mt 35p RG58 best quality military spec per mt 60p RGMini 8 best quality military spec per mt... Marine Mobile We would moor in Oulton Broad, Practical Wireless, January 2005 Communications was always his forte including over-thehorizon radar and research into the ionosphere, not forgetting his contribution to Amateur Radio In his latter days, when physical exertion wasn’t possible he spent most of his time writing, for magazines such as Practical Wireless However, much of the research which Fred... are discharged (including the feed from the high voltage supply) q The mains supply is disconnected You have been warned! Practical Wireless, January 2005 q AN INTRODUCTION TO FIELD EFFECT TRANSISTORS practical doing it by design In the first of his popular series to be published in 2005 Tony Nailer G4CFY looks at the biasing and other essential design factors for amplifiers using field effect transistors... calculations Practical Small Signal LF Amplifier Now let’s look at a practical small signal l.f amplifier A suitable common source circuit is shown in Fig 6, where R1 is chosen to be 47kΩ, R2 820Ω and R3 2.7kΩ If the circuit can be run from a 13.5V bench supply, then we can drop 1.5V across R4 (470Ω) with a quiescent current of 3mA The reactance of C1 needs to be less than Practical Wireless, January 2005. .. SWM much more! CRAMMED FULL TO BURSTING WITH ESSENTIAL INFO FOR ANY RADIO ENTHUSIAST - CAN YOU REALLY AFFORD TO BE WITHOUT IT? January 2005 Issue On Sale 23rd December 2004 - £3.25 - Miss it! Miss out! Short Wave Magazine - The ONLY choice! 20 Practical Wireless, January 2005 ® Compliments of the season to all our customers ARD9800 Digital voice transmission - now only £349 Image transfer now available... it all” holidays because of his radio knowledge was assigned writing for all the popular to Radar research and magazines of the day such as installation He loved the Practical Wireless, Practical work, carrying this on into Electronics, Practical Hi-Fi, civilian life with Kelvin Short Wave Magazine and of Hughes of Barkingside in course Radio Constructor, and Essex, joining them around others He was... Mike Street G3JKX Tel: (019 52) 299677 Website: www.tdars.org.uk The Telford & District Amateur Radio Society meet at 2000 every Wednesday evening at the Dawley Bank Community Centre Bank Road, Telford Lots of events are planned throughout the coming year, so log on to the website above and see what’s happening in 2005! Keep those details coming in! q 15 Please mention Practical Wireless when replying... 26 The West of England Radio Rally Contact: Shaun G8VPG Tel: (012 25) 873098 Website: www.westrally.org.uk To be held in Frome, Somerset Contact the above for more information If you’re travelling a long distance to a rally, it could be worth ‘phoning the contact number to check all is well, before setting off Practical Wireless, January 2005 adionewsradionewsradionewsradionewsradionewsradionewsradionewsradionewsradionewsradionewsradio . alt="" racticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalw features January Page 24 Page 36 Page 38 Page 28 January 2005 On Sale 9. vice) number for Practical Wi eless is: 007075. info author regulars January irelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspr Page. we will do our best to help and reply by mail. practicalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalwirelesspracticalw rob mannion’s keylines Welcome to