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PRODUCT SHOWCASE automatic antenna tuner, AT-300 automatic antenna tuner for long wire and whip antennas, MB-13 mobile mount, PS-32 power supply, LF-30A low pass filter, TL-922 linear amplifier and SP50B mobile speaker. Kenwood's TS-50S is covered by a twelve month parts and labour warranty and it has a recommended retail price of $1589. For further information on the TS-50S or other Kenwood products, contact Kenwood on (02) 746 1888. Rugged clamp meter from Fluke World's smallest HF transceiver Kenwood Electronics has introduced the world's smallest HF Transceiver, the TS-50s. Designed for operation on the 160 to 10m amateur bands plus continuous coverage from 500kHz to 30MHz, the TS-50S also supports SSB, (LSB & USB), CW, AM and FM modes of operation. Measuring 179mm wide, 60mm high and 233mm deeps and weighing 2.9kg, the TS-50S is designed for the ham shack, office and mobile installation. Although small in size, the Low priced colour scanner Hewlett-Packard has introduced the lowest, priced, highest-performance colour and grayscale flatbed scanner it has ever produced, the HP ScanJet IIcx. With improved software and enhanced resolution, the new unit performs up to twice as fast as the previous model. The HP ScanJet IIcx has 1600 dpi enhanced resolution and 400 dpi optical resolution for both image and text scanning. Gray scale scanning takes eight seconds, compared with 15 seconds for the previous model. An optional transparency adapter allows the scanner to work with 90  Silicon Chip TS-50S delivers 100 watts in SSB, CW, FSK and FM modes and incorporates an automatic cooling fan. With 100 channels for transmit and receive frequencies, the TS-50S can hold both the A and B VFO, frequencies enabling FM split-frequency repeater operation. The split feature allows the user to transmit on one VFO and receive on another. Similarly, in TF-SET mode, the operator can `lock' the receiver frequency and then find the best frequency at which the DX station is located. Optional extras include an AT-50 a variety of hardcopy media, such as 35-mm slides, transparencies and paper. The adapter accepts transparencies ranging in size from 35mm to 8-1/2 x 11.7 inches. The scanner also accepts standard paper sizes up to 11 x 14 inches. An optional automatic document feeder provides unattended scanning for up to 50 pages. Recommended retail price is $2258 including sales tax, available from authorised HP dealers. The optional 50-page automatic document feeder is $1168. For further information on HP products and sevices, phone 131347 (no STD area-code required). Fluke Corporation has developed a new clamp meter which can measure AC current to 400A and AC volts to 600V. The new unit is intended for commercial, industrial and residential electricians as well as for HVAC/R (Heating Ventilation Air Conditioning Refrigeration) service technicians. Its tapered jaws, with centred opening, give easy access to conductors in crowded junction boxes. The Model 30 is more accurate and easier to use than analog meters. A HOLD button “freezes” the display so values can conveniently be read. It conforms to the safety standards of the IEC 1010 and has UL, CSA and TUV certifications. Accuracy is quoted as ±1.3%, specified for one year after calibration. Operating temperature range is from -10°C to +50°C. For further information, contact Philips Test and Measurement, 34 Waterloo Rd, North Ryde, NSW 2113. Phone (02) 888 8222. Compact DC-DC converter Claimed to be the world's most advanced, high density single and triple output DC-DC converters, the MicroVerter uV series can deliver up to 250 watts. These miniature converters are available in three input voltage versions: 28 & 48V DC for the telecommunications industry and 300V DC for distributed power applications. Operating at a constant frequency, the Micro-Verter series is parallelable for current sharing, and is fault tolerant with a true n+1 redundancy, offering MTBF of over 1.1 million hours. The converters have non-shutdown over-voltage protection, thermal and input OVP protection, extremely low thermal resistance and an excellent transient response. As well as the single or triple voltage outputs, an "output good" signal is provided and there is an optional "sync" pin. For further information, contact Amtex Electronics, 13 Avon Road, North Ryde, NSW 2113. Phone (02) 805 0844. Central Coast annual field day The Central Coast Field Day is one of the longest running events in the Australian amateur radio calender. The next Central Coast field day will be held on Sunday 27th February 1994, at Wyong Racecourse and this will be the 37th year of this popular event. As usual, the large contingent of suppliers of electronic equipment, High capacity removable drive Southend Data Storage have announced a new removeable hard disc drive from Teac Corporation. The Drive, called TEAC-STOR consists of the drive, docking bay for a 5.25-inch slot and carrying case, and is available in capacities of 250 and 360 megabytes. Both the 250MB and 360MB models require only a single 5V DC power source, a first for 3.5 inch hard disc drives. Power consumption during read/write operation is only 2.5 watts, giving a significant power saving. Both drives are compatible with the industry standard IDE interface, components and books will be attending. These companies will have their latest products on display and many traders will have items on sale at very special Central Coast field day prices. Last year, the popular flea market attracted a large number of people who traded an enormous amount of surplus electronic equipment to eager buyers from trestles, trailers or from the boots of their cars. This year an even bigger program of interesting lectures and equipment displays has been arranged. More than two thousand people attended last year’s Central Coast Field Day and the next one at Wyong Racecourse will be bigger and better than ever, so mark the 27th February 1994 down in your calendar. Gates will open at 9:00 AM in wet or fine weather and making them suitable for almost any system. For further information on TEAC-STOR or other TEAC data storage product, Rick Stanford of Southend Data Storage, PO Box 25, Menai, NSW 2234. Phone (02) 541 1006. all displays are under cover. Compact R/C modules McLean Automation has introduced a series of `bricks’, being a range of portable radio control modules housed in Clipsal 265/5 (210 x 110 x 80mm) enclosures with carry bar. Similar in appearance to a house brick with a handle, these rugged units are affordable and Australian made. The brick series extends from simple single button transmitters to multi code transceivers capable of actuating VIDEO & TV SERVICE PERSONNEL TV & VIDEO FAULT LIBRARIES AVAILABLE AS PRINTED MANUALS $90 EACH + $10 DELIVERY BOTH MANUALS VIDEO & TV $155 + $15 DELIVERY OR AS A PROGRAM FOR IBM COMPATIBLES $155 + $10 DELIVERY FOR MORE INFORMATION CONTACT TECHNICAL APPLICATIONS FAX / PHONE (07) 378 1064 PO BOX 137 KENMORE 4069 January 1994  91 Philips slashes DCC prices In a dramatic move to get DCC players and recorders moving in the marketplace, Philips has announced big price cuts. The fullhouse DCC900 recorder, previously priced at $1799, is now $999 while the DCC600, previously $1499, is multiple remote loads with separate on/off coding and receiving `loop back’ acknowledgement of switching function. All systems have a 2km range from a radio licence exempt HF transmitter with excellent long wavelength diffraction performance around obstacles in the propagation path. The transmissions are digitally encoded and the the dry batteries give 6-12 months’ service. For further information, contact McLean Automation, PO Box 70, Freemans Reach, NSW 2756. Phone (045) 796 365. now $799. And the recently released DC130, pictured here being used by Australian aerobics champion Sue Stanley, is now $699. Customers who have already purchased a DCC player or recorder at the old prices need only call Philips at (008) 80 3312 to receive a complimentary set of 25 pre-recorded DCCs. High-power subwoofer for cars Kenwood Electronics has announced a subwoofer and dedicated subwoofer amplifier guaranteed to rattle the windows. Called the Letterbox, it measures only 251mm wide, 266mm high and 400mm deep and can be mounted behind the seat, on the van floor or in the boot. The Letterbox is a bass reflex design employing what Kenwood call a spherical flow duct. This is a tapered port to enhance low frequency response down Luxman amplifier & CD player: continued from p.32 check­ed out at -93dB at 1kHz which is not quite as good as the claimed -100dB but the dif­ ference is largely academic since anything over -70dB is more than adequate. Measurements aside, we can state that both the A-371 stereo amplifier and D-351 compact disc player are very fine products. They work well and produce excellent sound quality and, as the final icing on the cake, 92  Silicon Chip they come with a 5-year full parts and labour warranty. Pricing is $1399 for the A-371 amplifier and $799 for the D-351 compact disc player. Luxman equipment is available from selected hifi retailers. For the name of your nearest dealer, contact the Australian distributor for Luxman, International Dynamics Pty Ltd, 78-80 Herald St, Cheltenham, Vic 3192. Phone (03) 585 0522. (L.D.S.) delow 40Hz. Combined with reasonably high efficiency (90dB), can deliver lots of bass. Designed to be used as a single unit or in a multi-subwoofer set up, the Letterbox can handle bass program material up to 200 watts. To drive the subwoofer, Kenwood market the KAC-714 mono power amplifier, rated at 100 watts but capable of delivering around 200 watts on peaks. Measuring only 280mm wide, 50mm high and 170mm deep the KAC-714 can fit snugly into most boots. A built-in crossover offers variable cut off from below 30Hz to 200Hz and an input gain control match the sound levels to other speakers. The Letterbox subwoofer is priced at $399 while the KAC-714 mono power amp is $349. Both units are covered by a twelve month parts and labour warranty. For further information on Kenwood car audio products and your nearest Kenwood car audio dealer, phone (008) 066 190. Digital DC power supplies The new Leader Digital Series regulated DC power supplies consist of five models: two 18V, two 36V and one 70V model. Intended for R & D, automated and educational applications, the series features optional GPIB for computer control. The power supplies can also be remotely controlled using the standard remote control connector. For stable output, voltage drops caused by test leads resistance and contact resistance at the output terminal are compensated for by using the sensor plug provided. For further information, contact AWA Distribution, 112-118 Talavera Road, North Ryde, NSW 2113. Phone (02) 888 9000. SC