gsm telephone hybrid

Hybrid Antennas - Antennas that use a combination of vertical and horizontal polarisation.

GSM1800 Moxon Square Antenna - EB4EQA's Projects GSM1800 moxon square antenna

LF/VLF Portable Loop Antenna - The octoloop antenna is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe

Phone line as a SW antenna - This article describes how to use a phone line as a shortwave receiving antenna, but be carefull telephone lines present a potential shock hazard, use at your own risk

Play Things of Past - Vintage tubes, radios, parts, radio books and magazines, old telephones, speakers, phonographs, etc. Retail store in Cleveland, Ohio

Homepage 19LD113 - Lima Delta International DX Group

K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.

Autotena - Antenna manufacturer in Taiwan, products range are RF communication antennas ( CB, VHF, UHF, Dual band, Base Station, Marine, GPS,GSM, PCS, Cellular, DVB-T ) , Amplifiers , Mounting Kit ,Accessories & Related products.

Sirio Antenne - Antenna for GSM, CB, marine, VHF/UHF, HAM and high frequency 1,9/2,4GHz

SuperPass Company Inc. - Antenna manufactuer, Panel antennas, sector panel antennas, high gain for ISM, MMDS, PCS, GSM, CDMA, TDMA, 400MHz, 900MHz,1.9GHz, 2.4GHz, 2.7GHz, 3.5GHz,5.8GHz. Broadband wireless applications for ISP,ASP.

T.G.M. Communications - MQ-1 four band HF beams 20,15,10,6 meters MQ-2 six band HF beams 20,17,15,12,10,6 meters, beam antennas and Hybrid Quad antennas

Taoglas antennas - Antennas for asset tracking, navigation and remote monitoring GPS, GSM, GPS/GSM, Satellite Radio, WLAN

DTMF Kit - DTMF-KIT1 board for Transceiver, board for Telephone-Line and Remote-control without a HAM Transceiver

TestInHouse - Manufacturer of RF Shielded boxes, RF shielded enclosures, test accessories for wireless phones and handhelds testing. RF and Audio test solutions. GSM, CDMA, BlueTooth, Wi-fi test.

Pacific Research Solutions - Repeater Controllers, Repeater Tone Panels, Telephone Interface, Remote Monitoring Systems, Process Control and TDS Monitors

Connect System - Controllers and Telephone interconnects.

Nathan Stubblefield - Kentucky farmer invents wireless telephone! But was it radio? Facts and folklore about Nathan Stubblefield by Bob Lochte.

900MHz telephone frequencies - Frequency table for 900Mhz phones

Dutch Scanner Web - Dutch scanner web contains information about dtmf pagers gsm tetra umts scanners decoders.

Irae 2 - Italian amateur and commercial radio dealer

RadioTelephone Tutor - Helps you study for the Ham Radio & FCC GROL exams. Often times, test questions are worded in ways; that fool you. RadioTelephone Tutor drills on missed questions, till you know the answers backwards and forwards. Can take entire question pools in straight, or random order. Creates a practice test; which represents what you would be given in a real exam.

Speak Freely - Free Internet telephone originally written in 1991 by John Walker, mostly a voip software

SuperNEC antenna simulation - Hybrid Method of Moment (MoM) and Geometric Theory of Diffraction (GTD) program. Matlab based GUI interface. Genetic optimizer included. Windows/Linux versions.

The Islander HF RTX - A practical solution by Cuban radio amateurs, hybrid circuit with mostly defunct TV set parts.

Telephone Interference - Telephone EMI, questions and answers on how to solve interference problems to phone lines