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speed data transmissions. The first is a radio/telex station that handles FEC or SITOR mes- sages in the ARQ mode; several of these stations have been installed and are in operation. The second is a computer radio network station which permits com- puter-to-computer transmissions over Hull's HF/SSB radio link- said to be ideal for business commu- nications between boat and shore. Either station's transmit power may be boosted by using Hull's soon-to- be-released 1 kw linear amplifier. ICOM Circle 97 on Reader Service Card ICOM America, Inc., headquar- tered in Bellevue, Wash., recently introduced the technologically ad- vanced commercial grade VHF ma- rine transceivers IC-M500 and IC- M500D. The IC-M500 has been FCC type accepted for mandatory and com- pulsory radio-telephone usage for small passenger boats. The IC-M500D's full duplex sys- tem allows one to talk and receive at the same time, like a cellular tele- phone. The IC-M500D comes stan- drad with an HS-50 telephone handset. The result of extensive research and rigid testing, the versatile IC- M500D meets all communications needs. Specially constructed with extensive moisture protection sys- tem, the IC-M500D is water-resis- tant, providing high reliability in moisture and saltwater air environ- ments. The IC-M500D features: exten- sive new water-tight design; excel- lent receiver sensitivity and per- formance; six scanning systems in- cluding dual watch and tri-watch; 48 memory channels in three 16-chan- nel banks; 5-watt audio output, 10 watts with optional external speak- er; 30-watt two-way hailer/intercom system; manual 30-watt foghorn (300Hz tone); optional plug-in scrambler; full duplex system stan- dard on IC-M500D; all U.S. and international channels, plus expan- sion channels; and waterproof mi- crophone/waterproof gold-plated connectors. The IC-M500D also receives po- lice, fire and land mobile frequen- cies. Additionally, the FCC-type ac- cepted IC-M500 is backed by a one- year warrantly and lifetime service policy. Also available from ICOM is the M500 digital voice scrambler for use with both the IC-M500 and IC- M500D. KELVIN HUGHES Circle 85 on Reader Service Card The latest products from Kelvin Hughes, Ltd. of England, a subsid- iary of Smiths Industries, pic, are the new generation Concept radar systems, HR 2000 and HR 3000. Concept radar systems from Kel- vin Hughes provide a unique and flexible approach to ergonomic bridge layout. The Concept HR se- ries has been developed to achieve total radar system integration in either existing vessels or bridge de- signs for the 1990s. The high resolution monitor, key- board and processor of the Concept HR radar can be situated remotely in any configuration—either bulk- head, deck console, deck head or desk-mounted, or can form one fully integrated unit in which the moni- tor angles can be adjusted to suit operator preference. Additional re- mote monochrome or color monitors can also be included in the Concept package. Concept HR systems offer rela- tive motion, true motion, and ARPA facilities, combined with E-Plot II, an enhanced version of the unique Kelvin Hughes electronic plotting program. Identical positioning of keyboard controls for these features throughout the range assists opera- tional confidence and familiarity. On the Concept HR system, all ship data and status can be ideally zoned for instant assimilation. KODEN Circle 86 on Reader Service Card Koden International, Inc., Nor- "How to choose the right valve9 No vapor valve is perfect for every application. That's why MMC gives you a choice of six. This checklist provides you with the information you need to make the right decision between the two most widely used models. FEATURE U-VALVE (Fitson existing ullage hatches) B-VALVE Vaporless gauging Yes Yes Hot work required for installation No Almost always Easy installation by ship's crew Yes Sometimes Ship removed from service No Almost always Zero ullage available 8" above zero Yes Sampling capability 1/2 liter 1/2 liter Valve mechanism Check valve Ball valve (Positive shut off) Standard material of manufacture Bronze Stainless steel Maintenance requirements None None Cost (approx.) of valve only 10" and larger $1,700 8" and smaller $1,400 Less than $600 Installation cost None Always No matter which you choose, MMC is prepared to help you meet revised regulations pertaining to petroleum and chemical barges. Remember, the MMC name stands for more than 30 years of reliability; there's simply no substitute for that kind of proven performance. MMC International Corp. 60 Inip Drive Inwood, NY 11696-1096 U.S.A. Phone: 800-645-7339 718-327-3430 Telex: 96-0140 MAMCAFINND Fax: 516-371-3134 MMC (Europe) Ltd. Milbum House, Dean St. Newcastle-upon-Tyne NE1 1LF UK Phone: (091) 232-8339 Telex: 537005 MARINE G Fax: 44-91-232-9216 MMC (Asia) Ltd. 2-20,4-Chome, Isobe-Dori Chuo-ku, Kobe 651 Japan Phone: 078-251-1033 Telex: 5624163 0PECK J Fax: 078-252-0265 /t/lC Keeping You in Control Circle 253 on Reader Service Card March, 1989 13 1
