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Wireless Communications/Experts

ExpertAverage RatingsExpertise

Gerry Christensen

Available
I can answer questions about mobile communications networking, network signaling, intelligent networks and infrastructure, and applications such mobile location services.

Jerry Hinshaw

U.S.
Available
RF and microwave engineering, hardware and systems applications. Avionics, satellite, and terrestrial communications. Space communications and navigation, geo-location services via satellite and ground-based wireless systems. Systems integration of RF and wireless services. Electric Utility RF Smart Meter (SmartMeter) and Smart Grid wireless devices and networks. Utility Distribution Automation.

Ali

Iran
Available
I can answer All Questions about VSAT Technology from A to Z included topologies,terrestrial equipment,RF/If Frequencies,astronomical orbits and other stuff.

Frank Mamani

Peru
Available
I can answer questions about UMTS/HSDPA wireless systems, specially from Huawei technology. I know everything about MML commands, special features and 3G concepts and theory. I can not answer about prices of equipments.

Kashif Amjad

Australia
Available
I can talk about all GSM wireless systems and in particular I am one of the worlds leading experts on Mobile Virtual Network Operators (MVNO) and can talk about all facets including, pricing, tariffing, billing, customer serivce, products, handsets, branding, marketing, advertising and network contract negotiation.

luis emiliani

U.K.
Available
I can help with - link fundamentals - propagation models (ITU P series, Okumura-hata, Cost) can not help with - signalling issues, MIMO channels, GSM/WCDMA protocol issues

Phillip J. Boucher

Canada
Available
I can answer any and all questions related to both the uses and the equipment of the General Mobile Radio Service (GMRS)and the Family Radio Service (FRS) in Canada.

Recent Answers

2011-12-18 acer iconia 7inxh rablet:

It does seem odd that the GPS operation, which could be fully independent of the WiFi connection, is disabled when you are not connected to the Internet.  It is possible the tablet is using cloud computing

2011-12-07 NARCO AT 150:

Lacking either a transponder test set or a near-by radar facility transmitting interrogations, I don't know.   There are services that travel to your airplane with portable test sets and provide the necessary

2011-12-06 NARCO AT 150:

First step is to get the DC power to the transponder when it is in the panel, clearly.  You say that the AT150 works fine on the bench, but are you able to simulate a ground interrogation?  Or, with an

2011-11-30 Reflectometry:

You ask "why localization"?  Because the system is looking for fault locations, right?    "Why not just a chirp signal?"  One can locate an impedance mismatch in a transmission line using a fixed frequency

2011-11-15 RF combiners and channel frequencies:

Hello Lowell,    What you want to do sounds simple enough and you are aware of the complexities.     There are several different cable frequency plans US cable TV systems use.  As the signals for the cable

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