HEATKEYS

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DX Zone directory with 15000 Amateur Radio links, about Ham-Radio radio scanning, cb radio and shortwave listening, antenna homebrew projects and a complete radio software collection. Include a free classified ads, ham radio reviews and operators di...

UNIMO Technology Co., Ltd. - Korea supplier of VHF/UHF Two-way Portable Radio,LMR

www.acm.org - The premier society in computing brings you the Computer Portal.

TradeKey.com Business to Business marketplace, B2B Marketplace, Import export marketplace

Security Cameras & Video Surveillance CCTV Systems for home and office video surveillance. Call now 1-877-92M-CCTV to customize your video surveillance system complete with security cameras

Ham Radio site including Curcuit Diagrams, Antenna Construction, Radio Repairs, and serious fun.

Research company stock information by sector or industry. Make informed investing decisions with updated stock market analysis and market performance information.

Two way radio programming and programmer solutions for all brands of 2-way communication radios including: Motorola, Midland (incl. Syntech, XTR), EF Johnson (E F Johnson, EFJ), Maxon, Legacy, Alan, GE (incl Rangr, Delta, Phoenix), GE/Ericsson, M/A-C...

Os transistores VT1, VT3, VT4 podem ser BC847 ou similar (BC547B), VT2 pode ser BC857 ou similar (BC557B). Os diodos de siílcio  podem ser 1N4148. O Regulador LP2950 é substituível com 78L05, mas...