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Perry Keller

About GAO Tek Inc. GAO Tek Inc. (www.GAOTek.com) is a global leader in research, development and manufacturing of high performance telecommunication testers, electronic measurement instruments, embedded development tools and other electronic products that serve the needs of electronic professionals internationally.


Handheld Earth Ground Tester for Resistance Testing

Handheld Earth Ground Tester for Resistance Testing


By:Perry Kellerl Business>Corporatel   May 24, 2012
10/100/1000 Base-TX to 1000 Base-FX Media Converter for Backbone Network

10/100/1000 Base-TX to 1000 Base-FX Media Converter for Backbone Network


By:Perry Kellerl Marketing>Press Releasesl   May 22, 2012
7 Inch Industrial Panel PC with WinCE 5.0 for Industrial or Commercial Projects

7 Inch Industrial Panel PC with WinCE 5.0 for Industrial or Commercial Projects


By:Perry Kellerl Business>Networkingl   May 17, 2012
200 MHz USB PC Based Oscilloscope with Multiple Functions

200 MHz USB PC Based Oscilloscope with Multiple Functions


By:Perry Kellerl Business>Networkingl   May 15, 2012
Highly Accurate Parallel Data Acquisition Module for Time-phase Acquisition

Highly Accurate Parallel Data Acquisition Module for Time-phase Acquisition


By:Perry Kellerl Business>Networkingl   May 10, 2012
Digital RF Millivoltmeter and Frequency Counter with Rapid Response

Digital RF Millivoltmeter and Frequency Counter with Rapid Response


By:Perry Kellerl Business>Networkingl   May 3, 2012
8-Channel Digital Video Recorder Compresses Video with High Quality

8-Channel Digital Video Recorder Compresses Video with High Quality


By:Perry Kellerl Marketing>Viral Marketingl   May 1, 2012
PCM Channel Analyzer with Many Full-Channel and Half-Channel Testing Functions

PCM Channel Analyzer with Many Full-Channel and Half-Channel Testing Functions


By:Perry Kellerl Business>Networkingl   Apr 26, 2012
Multi-Function Gigabit Ethernet Tester for 10M/100M/1000M Ethernet

Multi-Function Gigabit Ethernet Tester for 10M/100M/1000M Ethernet


By:Perry Kellerl Business>Networkingl   Apr 24, 2012
Multi-Function Handheld xDSL Tester for xDSL Network

Multi-Function Handheld xDSL Tester for xDSL Network


By:Perry Kellerl Business>Networkingl   Apr 19, 2012
USB Arbitrary Waveform Generator and Frequency Counter

USB Arbitrary Waveform Generator and Frequency Counter


By:Perry Kellerl Business>Networkingl   Apr 17, 2012
16 Channel Real Time Color Video Multiplexer

16 Channel Real Time Color Video Multiplexer


By:Perry Kellerl Business>Salesl   Apr 12, 2012
Handheld Signal Level Analyzer for CATV Testing

Handheld Signal Level Analyzer for CATV Testing


By:Perry Kellerl Business>Networkingl   Apr 10, 2012
Digital Signal Level Meter Performs Automatic Channel Power Measurement

Digital Signal Level Meter Performs Automatic Channel Power Measurement


By:Perry Kellerl Business>Networkingl   Apr 5, 2012
Radio Frequency Signal Generator Features AM and FM Modulation Functions

Radio Frequency Signal Generator Features AM and FM Modulation Functions


By:Perry Kellerl Marketing>International Marketingl   Mar 29, 2012
9 Channel Real Time Color Video Multiplexer Provides Multi-Screen Display

9 Channel Real Time Color Video Multiplexer Provides Multi-Screen Display


By:Perry Kellerl Business>Networkingl   Mar 27, 2012
Battery Conductance Tester Performs High Precision Online Testing

Battery Conductance Tester Performs High Precision Online Testing


By:Perry Kellerl Business>Networkingl   Mar 22, 2012
Multi-Function E1/Datacom Tester for Digital Networks

Multi-Function E1/Datacom Tester for Digital Networks


By:Perry Kellerl Business>Networkingl   Mar 20, 2012
100 MHz USB PC Based Oscilloscope for Notebook Computer

100 MHz USB PC Based Oscilloscope for Notebook Computer


By:Perry Kellerl Business>Networkingl   Mar 8, 2012
TDR Cable Fault Locator Combines functions of Megohmeter and ohmmeter

TDR Cable Fault Locator Combines functions of Megohmeter and ohmmeter


By:Perry Kellerl Business>Networkingl   Mar 6, 2012
Digital Function Generator Intended for Production Testing and Instrument Maintenance

Digital Function Generator Intended for Production Testing and Instrument Maintenance


By:Perry Kellerl Marketing>Press Releasesl   Feb 28, 2012
Multi-function Logic Analyzer with Delay Function to Capture Waveforms

Multi-function Logic Analyzer with Delay Function to Capture Waveforms


By:Perry Kellerl Business>Networkingl   Feb 23, 2012
4-Channel Automotive Tester/Diagnostic Oscilloscope for Vehicle Diagnosis

4-Channel Automotive Tester/Diagnostic Oscilloscope for Vehicle Diagnosis


By:Perry Kellerl Business>Networkingl   Feb 21, 2012
Digital Signal Level Meter Provides Easy Diagnoses of Network Faults

Digital Signal Level Meter Provides Easy Diagnoses of Network Faults


By:Perry Kellerl Business>Networkingl   Feb 16, 2012
Handheld 2 Channel Digital Oscilloscope w/DMM for On-Site Inspection

Handheld 2 Channel Digital Oscilloscope w/DMM for On-Site Inspection


By:Perry Kellerl Marketing>International Marketingl   Feb 14, 2012
Radio Frequency (RF) Spectrum Analyzer for Field Technicians and Engineers

Radio Frequency (RF) Spectrum Analyzer for Field Technicians and Engineers


By:Perry Kellerl Business>Negotiationl   Feb 7, 2012
CCTV Colour Video Quad Processor for CCTV Surveillance

CCTV Colour Video Quad Processor for CCTV Surveillance


By:Perry Kellerl Technology>Electronicsl   Feb 3, 2012
High Performance PCM Channel Analyzer Features Built-In Generator and Receiver

High Performance PCM Channel Analyzer Features Built-In Generator and Receiver


By:Perry Kellerl Business>Networkingl   Feb 2, 2012
Handheld Digital Storage Oscilloscopes with Multifunctional Dials and Shortcut Keys

Handheld Digital Storage Oscilloscopes with Multifunctional Dials and Shortcut Keys


By:Perry Kellerl Technology>Electronicsl   Jan 26, 2012
Parallel Data Acquisition Card Features High Reliability and Stability

Parallel Data Acquisition Card Features High Reliability and Stability


By:Perry Kellerl Business>Networkingl   Jan 17, 2012
10/100Base-TX to 100Base-FX Media Converter for Gigabit Ethernet Devices Links

10/100Base-TX to 100Base-FX Media Converter for Gigabit Ethernet Devices Links


By:Perry Kellerl Business>Networkingl   Jan 12, 2012
Handheld Gigabit Ethernet Tester with BER Testing Capability

Handheld Gigabit Ethernet Tester with BER Testing Capability


By:Perry Kellerl Business>Networkingl   Jan 10, 2012
Parallel Data Acquisition Card Features High Reliability and Stability

Parallel Data Acquisition Card Features High Reliability and Stability


By:Perry Kellerl Business>Networkingl   Jan 5, 2012
8-Channel Digital Video Recorder Compresses Video with High Quality

8-Channel Digital Video Recorder Compresses Video with High Quality


By:Perry Kellerl Business>Networkingl   Dec 22, 2011
4-Port 10/100Base-Tx and 1-Port 100Base-Fx Ethernet Switch

4-Port 10/100Base-Tx and 1-Port 100Base-Fx Ethernet Switch


By:Perry Kellerl Business>Networkingl   Dec 20, 2011
14 Slots Media Converter Chassis Features Plug-and-Play Installation

14 Slots Media Converter Chassis Features Plug-and-Play Installation


By:Perry Kellerl Business>Networkingl   Dec 15, 2011
Handheld Multi-Function CCTV Tester Combines Multiple Testers

Handheld Multi-Function CCTV Tester Combines Multiple Testers


By:Perry Kellerl Business>Networkingl   Dec 13, 2011
DDS Function Generator with Arbitrary Waveform Function

DDS Function Generator with Arbitrary Waveform Function


By:Perry Kellerl Business>Networkingl   Dec 8, 2011
USB PC Based Oscilloscope for Maintenance of Electronic Equipment

USB PC Based Oscilloscope for Maintenance of Electronic Equipment


By:Perry Kellerl Business>Networkingl   Dec 6, 2011
Impedance Analyzer for Efficient Impedance Measurement and Analysis of Component and Circuits

Impedance Analyzer for Efficient Impedance Measurement and Analysis of Component and Circuits


By:Perry Kellerl Business>Networkingl   Dec 1, 2011
USB Data Acquisition Module Offers High Performance at Low Cost

USB Data Acquisition Module Offers High Performance at Low Cost


By:Perry Kellerl Marketing>Press Releasesl   Nov 29, 2011
Small Size Cable Fault Locator Uses TDR Technology

Small Size Cable Fault Locator Uses TDR Technology


By:Perry Kellerl Marketing>Press Releasesl   Nov 24, 2011
Parallel Data Acquisition Module for Time-Phase Sensitive Acquisition

Parallel Data Acquisition Module for Time-Phase Sensitive Acquisition


By:Perry Kellerl Business>Salesl   Nov 22, 2011
16-Channel Digital Video Recorder Uses H.264 Video Compression Algorithms

16-Channel Digital Video Recorder Uses H.264 Video Compression Algorithms


By:Perry Kellerl Business>Networkingl   Nov 17, 2011
7 Inch Industrial Panel PC with WinCE 5.0 for Industrial or Commercial Projects

7 Inch Industrial Panel PC with WinCE 5.0 for Industrial or Commercial Projects


By:Perry Kellerl Business>Networkingl   Nov 15, 2011
Multi-Function E1/Datacom Tester Known for Its High Performance

Multi-Function E1/Datacom Tester Known for Its High Performance


By:Perry Kellerl Business>Salesl   Nov 10, 2011
E1/T1 BER Tester and Data Transmission Analyzer for Error Code Testing

E1/T1 BER Tester and Data Transmission Analyzer for Error Code Testing


By:Perry Kellerl Business>Salesl   Nov 8, 2011
 Portable Power Quality Analyzer Easily Removes Complex Power Quality Problem

Portable Power Quality Analyzer Easily Removes Complex Power Quality Problem


By:Perry Kellerl Business>Networkingl   Nov 4, 2011
Portable E1/Datacom Transmission Analyzer for Telecom Networks

Portable E1/Datacom Transmission Analyzer for Telecom Networks


By:Perry Kellerl Business>Networkingl   Nov 1, 2011
Reliable Portable Transmission Line/Antenna Analyzer

Reliable Portable Transmission Line/Antenna Analyzer


By:Perry Kellerl Marketing>International Marketingl   Oct 27, 2011
Easy-to-Use Portable DC Ground Fault Locator

Easy-to-Use Portable DC Ground Fault Locator


By:Perry Kellerl Business>Networkingl   Oct 25, 2011
4-Channel Automotive Diagnostic Oscilloscope with Fast Sampling Speeds

4-Channel Automotive Diagnostic Oscilloscope with Fast Sampling Speeds


By:Perry Kellerl Technology>Electronicsl   Oct 13, 2011
Digital Storage Oscilloscope with 5-in-1 design

Digital Storage Oscilloscope with 5-in-1 design


By:Perry Kellerl Technology>Electronicsl   Oct 11, 2011
Handheld CATV/QAM Analyzer

Handheld CATV/QAM Analyzer


By:Perry Kellerl Technology>Electronicsl   Sep 20, 2011
Easy-to-Use Handheld Earth Ground Tester

Easy-to-Use Handheld Earth Ground Tester


By:Perry Kellerl Technology>Electronicsl   Sep 15, 2011
Versatile SDH/PDH Transmission Analyzer

Versatile SDH/PDH Transmission Analyzer


By:Perry Kellerl Technology>Electronicsl   Sep 13, 2011
Portable xDSL Tester

Portable xDSL Tester


By:Perry Kellerl Technology>Electronicsl   Sep 8, 2011
Portable ADSL2+ Tester

Portable ADSL2+ Tester


By:Perry Kellerl Technology>Electronicsl   Sep 6, 2011
Handheld E1 Bit Error Rate (BER) Tester

Handheld E1 Bit Error Rate (BER) Tester


By:Perry Kellerl Technology>Electronicsl   Sep 1, 2011
Handheld Multi-Function CCTV Tester

Handheld Multi-Function CCTV Tester


By:Perry Kellerl Technology>Electronicsl   Aug 30, 2011
1000M Dual Port Media Converter

1000M Dual Port Media Converter


By:Perry Kellerl Technology>Gadgets and Gizmosl   Aug 25, 2011
4 Port Gigabit Ethernet Switch Converting Optical/Electrical Ethernet Signals

4 Port Gigabit Ethernet Switch Converting Optical/Electrical Ethernet Signals


By:Perry Kellerl Technology>Electronicsl   Aug 23, 2011
Digital Storage Oscilloscope for Field Use

Digital Storage Oscilloscope for Field Use


By:Perry Kellerl Business>International Businessl   Aug 18, 2011
DDS Arbitrary Function Generator/Counter

DDS Arbitrary Function Generator/Counter


By:Perry Kellerl Business>International Businessl   Aug 16, 2011
Portable PCM Channel Analyzer

Portable PCM Channel Analyzer


By:Perry Kellerl Technology>Electronicsl   Aug 11, 2011
Multi-Function E1 Service Tester

Multi-Function E1 Service Tester


By:Perry Kellerl Technology>Electronicsl   Aug 9, 2011
Parallel Data Acquisition Module

Parallel Data Acquisition Module


By:Perry Kellerl Computers>Hardwarel   Aug 4, 2011
100 MHz USB PC Based Oscilloscope

100 MHz USB PC Based Oscilloscope


By:Perry Kellerl Computers>Hardwarel   Aug 2, 2011
Two-Channel, Handheld 20 MHz Digital Oscilloscope w/ DMM

Two-Channel, Handheld 20 MHz Digital Oscilloscope w/ DMM


By:Perry Kellerl Business>Salesl   Jul 28, 2011
Handheld CATV Signal Analyzer

Handheld CATV Signal Analyzer


By:Perry Kellerl Business>Managementl   Jul 26, 2011
USB Arbitrary Function Generator

USB Arbitrary Function Generator


By:Perry Kellerl News and Society>Economicsl   Jul 21, 2011
Digital Storage Oscilloscope

Digital Storage Oscilloscope


By:Perry Kellerl Business>International Businessl   Jul 20, 2011
High-Performance PCM Channel Analyzer

High-Performance PCM Channel Analyzer


By:Perry Kellerl Business>Small Businessl   Jul 19, 2011
Portable Optical Power Meter

Portable Optical Power Meter


By:Perry Kellerl Finance>Currency Tradingl   Jul 14, 2011
Portable DC Ground Fault Locator

Portable DC Ground Fault Locator


By:Perry Kellerl Marketing>Press Releasesl   Jul 13, 2011
 Multi-Function Battery Conductance Tester

Multi-Function Battery Conductance Tester


By:Perry Kellerl Marketing>Press Releasesl   Jul 7, 2011
4-Channel Automotive Diagnostic Oscilloscope

4-Channel Automotive Diagnostic Oscilloscope


By:Perry Kellerl Technology>Electronicsl   Jun 30, 2011
7 Inch Industrial Panel PC with WinCE 5.0

7 Inch Industrial Panel PC with WinCE 5.0


By:Perry Kellerl Marketing>Press Releasesl   Jun 28, 2011
Handheld Earth Ground Tester

Handheld Earth Ground Tester


By:Perry Kellerl Business>Corporatel   Jun 23, 2011
10/100/1000M Media Converter

10/100/1000M Media Converter


By:Perry Kellerl Technology>Electronicsl   Jun 21, 2011
4 Channel HDD Digital Video Recorder

4 Channel HDD Digital Video Recorder


By:Perry Kellerl Marketing>Press Releasesl   Jun 16, 2011
Digital Function Generator

Digital Function Generator


By:Perry Kellerl Technology>Electronicsl   Jun 14, 2011
Colour Video Quad Processor

Colour Video Quad Processor


By:Perry Kellerl Marketing>Press Releasesl   Jun 9, 2011
60 MHz USB PC-Based Oscilloscope

60 MHz USB PC-Based Oscilloscope


By:Perry Kellerl Business>Salesl   Jun 7, 2011
Multi-Function Optical Time Domain Reflectometer

Multi-Function Optical Time Domain Reflectometer


By:Perry Kellerl Technology>Electronicsl   Jun 2, 2011
 Portable Digital Scope w/FFT

Portable Digital Scope w/FFT


By:Perry Kellerl Marketing>Press Releasesl   May 31, 2011
40 MHz USB PC-Based Oscilloscope

40 MHz USB PC-Based Oscilloscope


By:Perry Kellerl Marketing>Press Releasesl   May 26, 2011
Multi-Function Logic Analyzer

Multi-Function Logic Analyzer


By:Perry Kellerl Business>Salesl   May 24, 2011
Handheld Optical Power Meter

Handheld Optical Power Meter


By:Perry Kellerl News and Society>Freel   May 19, 2011
 Plug and Play USB Data Acquisition Module

Plug and Play USB Data Acquisition Module


By:Perry Kellerl Technology>Electronicsl   May 17, 2011
Smart Gigabit Ethernet Converter

Smart Gigabit Ethernet Converter


By:Perry Kellerl News and Society>Freel   May 12, 2011
9 Channel Real Time Color Video Multiplexer

9 Channel Real Time Color Video Multiplexer


By:Perry Kellerl Business>Salesl   May 10, 2011
20 M-12 bit- 4 CH Parallel Data Acquisition Card

20 M-12 bit- 4 CH Parallel Data Acquisition Card


By:Perry Kellerl News and Society>Journalisml   May 5, 2011
D1 Professional DVR Card

D1 Professional DVR Card


By:Perry Kellerl Marketing>Press Releasesl   Apr 29, 2011
16 Channel Real Time Color Video Multiplexer

16 Channel Real Time Color Video Multiplexer


By:Perry Kellerl Marketing>Press Releasesl   Apr 27, 2011
Portable Cable Fault Locator

Portable Cable Fault Locator


By:Perry Kellerl Business>Business Ideasl   Apr 25, 2011
Handheld 10/100/1000M Ethernet Analyzer

Handheld 10/100/1000M Ethernet Analyzer


By:Perry Kellerl Marketing>Press Releasesl   Apr 22, 2011
Easy-to-Use USB PC Based Digital Oscilloscope

Easy-to-Use USB PC Based Digital Oscilloscope


By:Perry Kellerl Marketing>Press Releasesl   Apr 19, 2011
Handheld 2 Channel 60 MHz Digital Oscilloscope/DMM

Handheld 2 Channel 60 MHz Digital Oscilloscope/DMM


By:Perry Kellerl Marketing>Press Releasesl   Apr 13, 2011
 Hot Pluggable 1000Base-T SFP Copper Transceiver

Hot Pluggable 1000Base-T SFP Copper Transceiver


By:Perry Kellerl Marketing>Press Releasesl   Apr 11, 2011
USB Arbitrary Waveform Generator and Frequency Counter

USB Arbitrary Waveform Generator and Frequency Counter


By:Perry Kellerl News and Society>Journalisml   Apr 6, 2011
DDS Arbitrary Signal Generator/Counter

DDS Arbitrary Signal Generator/Counter


By:Perry Kellerl Business>Business Ideasl   Apr 1, 2011
High Performance Network Video Server

High Performance Network Video Server


By:Perry Kellerl Marketing>Press Releasesl   Apr 1, 2011
High Performance Universal Programmer

High Performance Universal Programmer


By:Perry Kellerl Technology>Electronicsl   Mar 19, 2011
Handheld Versatile CCTV Tester

Handheld Versatile CCTV Tester


By:Perry Kellerl Technology>Electronicsl   Mar 17, 2011
RF Synthesized Signal Generator

RF Synthesized Signal Generator


By:Perry Kellerl Technology>Electronicsl   Mar 16, 2011
Portable CATV Signal Level Meter

Portable CATV Signal Level Meter


By:Perry Kellerl Technology>Electronicsl   Mar 12, 2011
Multi-Function ADSL2+ Tester with Jacket Protector

Multi-Function ADSL2+ Tester with Jacket Protector


By:Perry Kellerl Technology>Electronicsl   Mar 11, 2011
High-Performance Handheld Gigabit Ethernet Tester

High-Performance Handheld Gigabit Ethernet Tester


By:Perry Kellerl Technology>Electronicsl   Mar 8, 2011
Portable CATV Cable Fault Locator

Portable CATV Cable Fault Locator


By:Perry Kellerl Technology>Electronicsl   Mar 8, 2011
Portable Versatile Signal Level Analyzer

Portable Versatile Signal Level Analyzer


By:Perry Kellerl Technology>Electronicsl   Mar 3, 2011
CATV Signal Level Meter

CATV Signal Level Meter


By:Perry Kellerl Technology>Electronicsl   Mar 1, 2011
Pen Style Optical Visual Fault Locator

Pen Style Optical Visual Fault Locator


By:Perry Kellerl Business>Business Opportunitiesl   Feb 26, 2011
Multi-Function CIF Professional DVR Card

Multi-Function CIF Professional DVR Card


By:Perry Kellerl Technology>Electronicsl   Feb 25, 2011
Versatile USB PC-Based Oscilloscope

Versatile USB PC-Based Oscilloscope


By:Perry Kellerl Technology>Electronicsl   Feb 22, 2011
Communication Cable Fault Tester

Communication Cable Fault Tester


By:Perry Kellerl Technology>Electronicsl   Feb 18, 2011
CATV Analyzer

CATV Analyzer


By:Perry Kellerl Business>Business Ideasl   Feb 9, 2011
Logic Analyzer Features Simultaneously Observations

Logic Analyzer Features Simultaneously Observations


By:Perry Kellerl Business>Business Ideasl   Feb 4, 2011
Portable Optical Power Meter

Portable Optical Power Meter


By:Perry Kellerl Business>Online Businessl   Feb 4, 2011
High Performance Optical Time-Domain Reflectometer (OTDR)

High Performance Optical Time-Domain Reflectometer (OTDR)


By:Perry Kellerl Technology>Electronicsl   Jan 28, 2011
 Four Channel Real Time Digital Video Recorder

Four Channel Real Time Digital Video Recorder


By:Perry Kellerl Technology>Electronicsl   Jan 26, 2011
Energy-saving CIF Professional DVR Card

Energy-saving CIF Professional DVR Card


By:Perry Kellerl Technology>Electronicsl   Jan 25, 2011
 Handheld Optical Light Source

Handheld Optical Light Source


By:Perry Kellerl Technology>Electronicsl   Jan 20, 2011
QAM Analysis Meter

QAM Analysis Meter


By:Perry Kellerl Technology>Electronicsl   Jan 19, 2011
Optical Time-Domain Reflectometer Performs Optical Fiber Fault Location

Optical Time-Domain Reflectometer Performs Optical Fiber Fault Location


By:Perry Kellerl Technology>Electronicsl   Jan 15, 2011
Parallel Data Acquisition Card Adopts Synchronous Parallel Design

Parallel Data Acquisition Card Adopts Synchronous Parallel Design


By:Perry Kellerl Technology>Electronicsl   Jan 12, 2011
Portable CATV Analyzer for Digital/Analog TV Transmission Networks

Portable CATV Analyzer for Digital/Analog TV Transmission Networks


By:Perry Kellerl Technology>Electronicsl   Jan 10, 2011
High Performance Handled Gigabit Ethernet Tester

High Performance Handled Gigabit Ethernet Tester


By:Perry Kellerl Technology>Electronicsl   Jan 6, 2011
Handheld Optical Power Meter

Handheld Optical Power Meter


By:Perry Kellerl Technology>Electronicsl   Jan 4, 2011
High Performance USB PC Based Oscilloscope

High Performance USB PC Based Oscilloscope


By:Perry Kellerl Technology>Electronicsl   Dec 31, 2010
High Performance 1000Base-T SFP Copper Transceiver

High Performance 1000Base-T SFP Copper Transceiver


By:Perry Kellerl Technology>Electronicsl   Dec 28, 2010
High-Performance Universal Programmer Features Automatic Identification

High-Performance Universal Programmer Features Automatic Identification


By:Perry Kellerl Technology>Electronicsl   Dec 24, 2010
High Performance Logic Analyzer

High Performance Logic Analyzer


By:Perry Kellerl Technology>Electronicsl   Dec 22, 2010
Digital Color Video Quad Processor

Digital Color Video Quad Processor


By:Perry Kellerl Technology>Electronicsl   Dec 20, 2010