UHF+SCANNER IN 1 RADIO WITH 80 CHANNELS READY FOR YOUR SERVICE BY UNIDEN-GADGETCITY

  ANALOGUE SCANNER+UHF RADIO IN ONE WITH 80 CHANNELS READY FOR YOUR SERVICE BY UNIDEN 

We are in a state of where when the weather gets extremely hot, bush fires start arising. And not everyone can communicate to one another where they are located. 

Why does this happen? This happens because they are in a place where there is no mobile phone reception or there is no such thing as a telephone line.

Well no need to worry about that anymore because thankfully UNIDEN have come up with a wonderful spectacular new invention which has a scanner and UHF radio built in together. 

Introducing to you!!

UNIDEN UH8080 80 CHANNEL UHF+SCANNER IN 1 RADIO. 

 
 Want to find out more well then read on..

UNIDEN UH8080NB 80 CHANNEL UHF+SCANNER IN 1 RADIO

3 YEAR AUSTRALIA WARRANTY
 
FREE SHIPPING ASUTRALIA WIDE
 
INSTOCK AND READY TO EXPRESS POST WITH AUSTRALIA POST
 
 
UHF CB Mobile and Scanner in 1 with Instant Reply Function
 
Introducing the latest in UHF Communications from the world leaders in wireless communication. The UH8080NB is a combined UHF CB Mobile and Scanner in 1 making it the ultimate in CB Radio communications.
The UH8080NB is built for rugged Australian and New Zealand conditions which makes it ideal for the truck drivers, 4WD Drivers and Caravan Drivers. Uniden's reliability and experience in UHF makes this unit ideal for the professional who needs to keep in touch with the outside world. The UH8080NB offers the finest components, engineering and styling, just what you would expect from Uniden.
Using Uniden's world recognised BearCat Scanning Technology, the UH8080NB can scan unencrypted analogue UHF Police/ Fire & Ambulance frequencies, UHF CB Channels and user programmable channels at the same time. The CB Radio has 100 user programmable RX channels allowing you to select from 9600 recevable channels.
But what makes this special is the Instant Replay Function allowing you to record and replay up to 1 minute of recent received messages.
Equipped with a Remote Speaker Microphone with a built-in Large LCD Backlit Screen allows you to control all functions and features remotely, including volume and Power On/Off. This unit features Instant Channel Programming and Recall at the touch of a button which is located on the MIC.
Ideal for:

The UH8080NB is a 5W unit. The built-in AVS circuitry allows for an automatic volume stabiliser detecting narrowband and wideband transmission automatically adjusting incoming audio to comparable levels.

 

Key Features

2-in-1 Transceiver

Bearcat Engine

80 Narrowband Channels

5 Watt Maximum TX Output Power

3 Year Warranty

Analogue Police & Fire Frequencies

100 Extra Receive Only Channels(400-520MHz in 12.5kHz steps)

Remote LCD Speaker Microphone (Remote SPK/MIC)

Mini Compact Size (24.8mm (H) X 126.5mm (W) X 99.8mm (D)

Built-In AVS Circuitry

Duplex Capabilities

Built-in Selective Calling (SECALL) Feature

Roger Beep Function On/Off

LCD Display with 7 Backlit Colours

Pre-programmed Police, Fire & Ambulance Frequencies

Instant Reply Function

Close Call RF Capture Technology

+12V to + 24 DC Power Input

External Speaker Jack

5 Level Preset Squelch

Instant Channel Programming

One touch Instant Channel recalling

Dual Watch with Instant Channel

Group Scan and Priority Channel Watch

Open Scan

Busy Channel Lock-out Function

10 Different Call Tones

38 Built-in CTCSS (continuous Tone Coded Squelch System) codes

104 additional DCS (Digital Coded Squelch )codes that are user selectable

Designed and Engineered in Japan

Built for Rugged Australian and New Zealand Conditions

 

Included in the box:
- 1 x UH8080NB
- 1 x Remote LCD Speaker Microphone
- 1 x 2M Extension Cable
- 1 x Microphone Hanger
- 1 x Mounting Bracket
- 1 x Quick Release Bracket
- 1 x DC Power Cord with Fuse
- 1 x Owner's Manual

#18km: Typical Range Line of Sight.

GADGETCITY YOUR ONE STOP COMMUNICATIONS STORE NOW ACCEPTING BITCOINS FOR PAYMENT. 

 COME IN STORE TODAY FOR MORE DETAILS.
GADGETCITY 
UNIT 12 161-171 WOODVILLE ROAD VILLAWOOD NSW 2163.  
 

REPLAY XD1080 XD 1080 LIVE ACTION HIGH DEFINITION CAMERA-GADGETCITY

REPLAY XD1080 XD 1080 LIVE ACTION HIGH DEFINITION CAMERA-GADGETCITY

AUSTRALIAN MODEL WITH AUSTRALIAN WARRANTY

FREE EXPRESS POST AUSTRALIA WIDE

What’s in the box:

• 1 Replay XD1080 Camera
• 1 HeimLock adjustable mount
• 1 LowBoy fixed mount
• 2 Flat Base VHB SnapTrays
• 2 Curved Base VHB SnapTrays
• 1 4GB microSDHC Card
• 1 USB Cable
• 1 HDMI Cable
• 1 Univ. USB DC Wall Adapter
• 1 Car USB Adapter
• 1 Nylon Ballistic Case
• 1 Silk Camera Bag
• 1 Windbreaker Decal Kit
• 2 Replay XD Decals
• 1 User Guide

THIS MODEL OVER THE XD720 HAS THE 1080 PICTURE. IT ALSO HAS THE HDMI PORT AND THE WALL CHARGER.

Product Description

The Replay XD1080 brings full HD video in a Small and Simple format.
Still Small and Simple
 
That’s what the Replay XD1080 is all about. Starting with the small design of the Replay XD and a clean sheet of paper, we managed to put full HD into a small package.
Featuring a water-resistant, hard anodized, rugged aluminum housing for your extreme adventures. The Replay XD1080 is the smallest and lightest full HD action-camera on the market.
Simple, two-button ON/OFF and Start/Stop make the Replay XD1080 camera easy to operate. Simply turn it ON and Press Record to Start. The built-in LED & Vibration Feedback tell you that you’re ready to go.
It’s really that simple.

Rotate, Tilt, Swivel, Clip, Mount, Etc
Replay XD1080 can be mounted practically anywhere due to its small form-factor and all-round shape. There are two mounts included with each system to get you recording in no-time.
HeimLock Mount (Swivel/Tilt): Features spherical adjustment with an eccentric cam-lock for a rock solid mount. Over 1,036,800 Mounting Positions with 360º lens rotation, 360º camera rotation, and 8º of tilt, not including the unlimited areas you can mount 1 of 4 included SnapTray VHB bases.
Included are 2 Flat SnapTrays and 2 Curved SnapTrays with 3M® VHB adhesive to securely mount to smooth surfaces: metal, paint, powdercoat, LSE & HSE plastic. 3M® VHB adhesive ensures secure mounting and removal without harming your surface.
LowBoy Mount (Fixed): Lowest profile mount, offers 360º lens rotation. Designed to be low and out-of-the-way. Compatible with our SnapTray VHB bases.

Finely Tuned Optics
Replay XD1080 features class leading optics. Never before has an action-camera featured such a high quality lens. With its custom designed wide angle 135º, f3.1 lens, and anti-glare coating, this lens is finely-tuned to match the 5MP CMOS sensor for better clarity, accurate color, and minimal image distortion.
Replay XD1080 also features a removable front lens bezel to accept our ProLens 37MM Adapter Lens & Filter Kit.

Audio Times Two
Internal Audio:
Along with everything else, we spend a lot of time obsessing over audio. We’ve accumulated thousands of hours developing, engineering, and testing the right combination of acoustic materials and microphones to suppress windnoise yet still capture realistic audio.
External Audio*
For the extra critical audio situation we have built in an External Audio option to connect high quality Lav Mics, Ext. Audio sources, or other In-car Radio Communication through a standard 3.5mm Mini-jack adapter.
*External Audio Line-In available via Replay XD1080 HW Adapter. Available Soon.

Many Modes. Easy to Use

1080P@30fps, 960P@30fps, 720P@60fps, 720@30fps, Photo@1, 5, 10 & 15 sec, Internal Audio, External Audio, Rec, Stop, Play, Skip Forward, Skip Reverse, Clip File, Live Video Out. Wow.
That’s a lot of modes. Don’t worry we made it easy.
Set the Mode once and it sticks. There’s no need to count button presses or reset your settings each time you use the Replay XD1080.
If you forgot what mode you were in or what they mean, just look inside the rear cover for a simple reminder.

Size Really Matters.

Replay XD1080 was designed with size and weight in mind. HD cameras don’t need to be big and bulky to capture great video. Replay XD1080 utilizes the perfect blend of size, shape, and style.

Resilient.

Replay XD1080 features a high-strength aerospace aluminum body – Mil-Spec hard-anodized for extreme durability to withstand the inherint demands of video-actionography.
Weather-resistance is a must when dealing with action-cameras, so Replay XD1080 features a double o-ring sealed lens bezel, rear cap, and top push buttons to keep out those harsh elements.

 

Where to buy from?

www.gadgetcity.com.au

or call us on 0297231144

or visit us at unit 12 161-171 woodville road villawood nsw 2163

UNIDEN BT446 BT-446 CORDLESS PHONE BATTERY- GADGETCITY

UNIDEN BT446 BT-446 CORDLESS PHONE BATTERY- GADGETCITY

3 YEAR REPLACEMENT WARRANTY

We are your local uniden authorised dealer.

THE BT446 BATTERY WORKS FOR UNIDEN CORDLESS PHONES IN AUSTRALIA

IN STOCK AND READY TO SHIP FROM OUR SYDNEY WAREHOUSE

We are a uniden authorised reseller and we sell uniden cordless phones and  batteries all the time.  No memory effect. 

 We have been selling the bt446 for years now and we are that confident of this 

 battery that we are now offering a 3 year warranty on the battery.

 REPLACES  CORDLESS PHONES AS FOLLOWS

•  WDECT RANGE   WDECT 2305 EXTRA HANDSETS
•  WDECT 2315
•  WDECT 2355 AND   +1+ 2 + 3 HANDSETS
•  WDECT 3355+1 WDECT 3355+2
•  WDECT 3315 ALL COLOURS
•  DIGITAL RANGE  DSS 7805 EXTRA HANDSETS
•  DSS 7815
•  DSS 7855 AND  + 1 + 2 +  3 HANDSETS
•  DIGITAL RANGE DSS 5805 EXTRA HANDSETS
•  DSS 5855+ 1+2 HANDSETS
•  DSS 5865+ 1+2 HANDSETS
•  2 line phones
•  
•  DSS 7960+1
•  DSS 7960+2
•  DSS 7960+3
•  Dss7905
•  Dss8905
•  Dss8955
•  Dss8955+1
•  Dss8955+2
•  Dss8955+3wp
•  Dss5305
•  Dss5355 5355+1 5355+2
•  Dss 3455 3405 3455+1 3455+2
•  Dss8955+3WP ALL HANDSETS

Check with your battery as it will do other phones not listed too.  We offer a 3 Year replacement warranty on all batteries we sell.To make it easier for our customers, we have also included our contact number on the battery and website on the battery for future reference.This Battery Works On all Uniden Phones In Australia.

WHY DO WE OFFER 3 YEAR WARRANTY WITH OUR BT446?

Our Bt446 Replacement Battery is a higher and longer lasting battery than anywhere else you will find it cheaper. we stand behind our Bt446 and we guarentee you that if you are not satisfied with our 100% Ausie battery bt446 we will replace it on the spot for you. 
WHY WOULD YOU BUY FROM US?
We are customers just like you and we will like to deal with our customers just the same way we would like to be treated in store. 
Trust in us and we will never let you down. 
Just come in store and we will fix any issues up. 

Call us now on 0297231144 
or login to www.gadgetcity.com.au

    

GME TX3100 UHF RADIO+TX670 HANDHELD+6.5DB AT870 BLACK ANTENNA PACK

GME TX3100 UHF RADIO+TX670 HANDHELD+6.5DB AT870 BLACK ANTENNA PACK

GME ORIGINAL TX3100 COMPACT UHF RADIO+GME TX670 SINGLE UHF HANDHELD RADIO+6.5DB AT870 BLACK HIGH GAIN ANTENNA
3 YEAR AUSTRALIAN WARRANTY WARRANTY
80 CHANNEL RADIO'S
 

IN THE BOX:

TX3100 – Super compact 5 watt UHF CB radio

• Digital Signal Processing

• Advanced Signal Management

• Dynamic Volume Control

• CTCSS & DCS

• Duplex

• Graphic signal strength meter

• 3 year warranty

 

TX670 – 2 Watt handheld UHF CB radio

• 2 watt switchable to 1 watt (Hi/Lo)

• Selectable Duplex range extender

• VOX handsfree enabled

• Dual watch

• CTCSS

• Auto Power Save

• 1 year warranty.

 

Included Contents: TX3100 Radio
Mounting bracket
Screw pack
Microphone
Microphone clip
DC lead
Spare GME model label
Instruction manual
Included Contents: tx670 Radio
Radio
Manual
Flexible Antenna
3 x 1500 mAh Rechargeable Batteries
240 Volt AC Adapter

UNIDEN AT870 6.5DB 477MHZ FIBREGLASS UHF S/S SPRING ANTENNA

BLACK WHIP WITH HEAVY DUTY SPRING 950MM TOTAL LENGTH

 

 
BLACK

UNIDEN AT870 FIBREGLASS BLACK UHF 6.5DB ANTENNA

ANTENNA IS MADE IN AUSTRALIA
 
• UHF 477MHz CB 6.5DB Gain Antenna 950MM In Length
• 5M RG58 FME Socket Terminated with UHF Adaptor
• Spring Mounted with Elevated Base and 5 Metre Cable
 
2 Year Warranty
WORKS ON ALL UHF VEHICLE RADIOS IN AUSTRALIA AND NEW ZEALAND

UNIDEN UH7760 NB+AT870 ANTENNA 80 CHANNEL LCD SPEAKER MIC UHF PACK

UNIDEN UH7760 NB+AT870 ANTENNA 80 CHANNEL LCD SPEAKER MIC UHF PACK

6.5db+950mm tall+heavy Duty Spring+Cable and Connector Included.

THIS RADIO IS THE ONLY RADIO ON THE MARKET THAT HAS THE LCD SPEAKER AND MICROPHONE ON THE HANDHELD

FREE EXPRESS SHIPPING AUSTRALIA WIDE

 

3 YEAR UNIDEN AUSTRAIA WARRANTY

 

Mini Compact Size UHF CB Mobile - with Remote Speaker MIC and Large LCD Screen.

Introducing the latest in UHF Communications from the world leaders in wireless communication.

The UH7760NB is the ultimate in compact UHF communications and built for rugged Australian and New Zealand conditions makes it ideal for the truck drivers, 4WD Drivers and Caravan Drivers. Uniden's reliability and experience in UHF makes this unit ideal for the professional who needs to keep in touch with the outside world. The UH7760NB offers the finest components, engineering and styling, just what you would expect from Uniden.

Equipped with a Remote Speaker Microphone with a built-in Large LCD Backlit Screen allows you to control all functions and features remotely, including volume and Power On/Off. This unit features Instant Channel Programming and Recall at the touch of a button which is located on the MIC.

Ideal for:

The UH7760NB is a 5W unit. The built-in AVS circuitry allows for an automatic volume stabiliser detecting narrowband and wideband transmission automatically adjusting incoming audio to comparable levels.

The UH7760NB comes with some great accessories including a Remote Speaker MIC, Microphone Hanger, Mounting Bracket and a 2m Cable.

Key Features

 

Designed and Engineered in Japan

 

80 Narrow Band Channels

 

Mini Compact Size

 

Large LCD Display & Flip LCD Feature

 

Remote Speaker Microphone with built-in Large LCD Display

 

5 Watt Transmission Power

 

Dual Speaker with Synchronised Volume (Speaker at Base and MIC)

 

2m Extension Cable ( To extend the lcd speaker microphone)

 

Signal Strength and RF Power (S/RF) Meter

 

Instant Channel Programming and Recall

 

Open / Group Scan

 

Dual Watch

 

Monitor On/Off Function

 

Duplex Capabilities

 

Key Beep On/Off Function

 

Busy Channel Lock-out Function

 

Roger Beep Function On/Off

 

Calling Tone Function

 

Auto Squelch

 

Volume Control

 

External Speaker Jack

 

CTCSS / DCS codes

 

Size of Unit (mm): 100mm (W) x 95mm (D) x 24mm (H)

 

 

Included in the box:
- 1 x UH7760NB Radio
- 1 x Remote Speaker MIC
- 1 x 2m Extension Cable
- 1 x Microphone Hanger
- 1 x DC Power Cord
- 1 x Mounting Bracket
- 1 x UH7760NB Owner's Manual

-  1 X  UNIDEN AT870 UHF ANTENNA

 

Additional Features:

Size of Unit (mm): 100mm (W) x 95mm (D) x 24mm (H)

Weight of Radio: 196g

 CH 22 & 23 are used for telemetry and telecommand applications, voice communications are not permitted on these channels and transmission is inhibited.

#18km: Typical Range Line of Sight.

UNIDEN AT870 FIBREGLASS BLK UHF 6.5DB ANTENNA  

ANTENNA IS MADE IN AUSTRALIA
The Uniden At870 Antenna:

• UHF 477MHz CB 6.5DB Gain Antenna 950MM In Length
• 5M RG58 FME Socket Terminated with UHF Adaptor
• Spring Mounted with Elevated Base and 5 Metre Cable
 
2 Year Warranty
WORKS ON ALL UHF VEHICLE RADIOS IN AUSTRALIA AND NEW ZEALAND

 

to find out more about this unit and if your in Australia or New Zealand please call us on 0298630668 or log onto our website at www.gadgetcity.com.au 

or simply email us at sales@gadgetcity.com.au. 

 

thanks 

THE MOST POPULAR BABY MONITOR ORICOM SECURE 700- GADGETCITY

ORICOM SECURE 700

The best baby monitor in the market today is the video and audio compatible Oricom Secure 700. This is purely because you are able to do the following as listed below with your baby monitor:

Oricom Secure 700

Baby Unit
Wall mountable Infrared Camera
Gives you a clear picture of your baby even in the dark.
Nursery room temperature sensor
Records your baby’s room temperature.
2-way communication
This unit can be used as a two way radio to help allow you to in touch between the Parent Unit and the Baby Unit. Whether you need a helping hand, want to comfort your baby to let him or her know you are on the way, or simply want to share a moment; it’s good to know you can do so with the push of a button.
Soft comforting adjustable night light
No need to leave your baby in darkness, a soft starry glow from the night providing comfort and reassurance for your baby, soothing the way to sleep.
5 soothing polyphonic lullabies
The Oricom Secure 700 plays 5 soothing ployphonic lullibies.
Sound Sensor lights
You can use the sensor lights on the Parent Unit to monitor the noise levels in your baby’s room, when the volume on the Parent Unit is turned down low.
Parent Unit
2.4″ Colour Display
Large clear display allows you to keep an eye on your baby anywhere around the home.
Parent talk back
This unit can be used as a two way radio to help allow you to in touch between the Parent Unit and the Baby Unit. Whether you need a helping hand, want to comfort your baby to let him or her know you are on the way, or simply want to share a moment; it’s good to know you can do so with the push of a button.
Privacy guaranteed with 120 auto-select channels
You can relax in the knowledge that you are the only one who can listen to your baby, and that the only baby you can hear is yours.
Easy to read blue backlit display
This makes it easy to read and adjust the settings on the unit in low light situations.
Fully portable
This unit provides you with mobility and the hands-free convenience that will allow you to go about your every day work, and still be able listen to your baby.
Adjustable digital volume control
Adjust the volume level as needed; now you control how much you hear from your baby’s room, soft breathing, a giggle or the little ones cry.
High definition sound
With no distortion what so ever, you can clearly hear every breath, giggle and burp you baby has to share.
Why Would You Need To Have A Baby Monitor? Answer my Question Please? Leave a comment bellow..
What Is Range Of The Oricom Secure 700?

Oricom Secure 700

The Oricom SC700 boasts a large 2.4″ Colour LCD screen, with infrared night vision capability, long range with out of range warning (up to 150 metres), crystal clear sound, 2-way communication and temperature monitoring.
Would you be interested in buying the ORICOM SECURE 700 CLICK HERE

Gadgetcity has the exclusivity with the worlds best baby monitor.

Gadgetcity.com.au

Gadgetcity.com.au

GadgetCity:

What We Do At Gadgetcity?

At Gadgetcity we strive to give the best service in selling and product knowledge and technical support. And also after sales support as well. We dont just take money from people and say ok thanks for the cash now bye bye. NO! And every retail shop in the world should know this. Once you win a customer you will keep that customer and get more people calling in to your store. How does that work? I was told once That the best form of advertising is "WORD OF MOUTH" and now i am living the statement. Everyday i hear people saying thank you for your service thanks so much, i will be recommending your company to people around my area and so on....
People you want business treat your customers the way you want your self to be treated, Think about this for a second, please.. Lets say your a sales person and you serve a customer and dont smile at them or great them in a nice way and you just got their money and you dont have a happy customer. Lets say your parents went into a shop and got the service you gave another person or even your self, how would you feel. Personally i will feel like ShIT..
If you want to see feedback from happy customers about us look below.

What Do We Sell At GadgetCity?

For those who know who we are thanks for supporting us we will always like to do business with you. For those who are new to online shopping and new to our company Gadgetcity here is a brief introduction.

About Us

GADGETCITY IS A COMPANY THRIVED ON PASSION, FUTURE TECHNOLOGY ADVANCES AND EXCITEMENT. THE COMPANY WAS FORMED IN 2000 TO PROVIDE CONSUMERS WITH A LARGE RANGE OF ELECTRONICS PRODUCTS TO MEET TODAY'S FAST PACED TECHNOLOGY MARKET.

WE HAVE BEEN SERVING CUSTOMERS FOR ALL THERE NEEDS FOR THE PAST 20 YEARS AND ARE COMMITTED TO EXTEND THIS SERVICE ONLINE AND IN THE FUTURE IN STORE.

WE ORIGINALLY COME FROM A CONSUMER ELECTRONICS BACKGROUND AT THE SAME TIME CUSTOMER SERVICE BACKGROUND AND HAVE WORKED IN SUCH BUSINESSES AS TANDY,DICK SMITH AND BETTA ELECTRICAL STORES AND BECAUSE WE HAVE EXPERIENCES IN RUNNING AND MANAGING SUCH BUSINESSES, WE HAVE GAINED EXCELLENT EXPERIENCE TRAINING IN THESE INDUSTRIES, THAT WE HAVE MOVED FORWARD TO PASS ON THIS INFORMATION AND PRODUCTS TO OUR CUSTOMERS.

WE ARE A FRIENDLY AND SUPPORTIVE BUSINESS AND HAVE PASSION IN WHAT WE DO. WE ARE CONSTANTLY ADDING NEW PRODUCTS TO OUR RANGE OF BATTERIES, COMMUNICATIONS AND ASSOCIATED PRODUCTS. WE HAVE A FULLY SECURE 256 BIT ENCRYPTED ORDERING ONLINE SYSTEM AND FAST COURIER AND POST DELIVERY SYSTEM.

OUR MOTTO IS IF YOUR NOT HAPPY WE ARE NOT. IF YOU ARE HAPPY THEN TELL A FRIEND. WE ARE 100% BEHIND THIS AS EVERYTHING COMES DOWN TO CUSTOMER SERVICE AND ADVICE.

WE ALSO UNDERSTAND MANY CUSOMTERS DONT LIKE OR ARE NOT USED TO USING THE INTERNET FOR ORDERING AND THIS IS WHY WE HAVE ALSO INCLUDED PHONE ORDERS.

WE CAN BE CONTACTED 5 DAYS A WEEK AND WE WILL RESPOND TO ALL EMAILS WITHIN NORMAL BUSINESS TIME.
Come on in and visit us click here

GADGETCITY.COM.AU- THE REVOLUTION OF ONLINE MARKETING BEGINS HERE

GADGETCITY.COM.AU- THE REVOLUTION BEGINS HERE

Gadgetcity is a company that strives on service no matter what you buy from a single AA battery to A massive Gadget like a digital scanner. What I mean in service is that if you have a bought something or you are thinking of buying something from an online store and are scared that you will be neglected for warranty purposes you will have to think 3 times before passing by Gadgetcity.

If you ask why is that, here is my explanation. The owner of gadgetcity has always been working in retail and he and all the staff including me have always been in retail and we believe in what goes around comes around. If we give outstanding service we have certified our spots in the customers heart saying these guys are cool or what ever they might think and they always refer to one another. And thats how we are growing. We are unlike other online retailers have utmost respect to all our customers and we will do anything to see them have a smile on their faces when walking out of the store.

Gadgetcity.Com.Au

Gadgetcity

At Gadgetcity we sell everything that you can think of, like Batteries, Cordless Phones, Corded Phones, Cables ( Hdmi, Optical, RCA, VGA,etc) In car UHF Radios, Hand Held Radios, Scanners, Antenna's for UHF Radios, Baby monitors, and so on. If you want anything or need any thing call us on 02 98639668. We will always be there even after service to help all our customers.

 Gadgetcity

Want to see what others think about us have a look here click here.

If your not 100% satisfied with our service just give us a call and we will help you the best way we can. :) We never will let our customers leave unsatisfied. We want every one to support us. Please be open and leave us a comment to let us know what you think.

Thanks For Your support!

The Gadgetcity Team.

Gadgetcity- What Is The Difference Between Db and Dbi Frequencies?

Gadgetcity- What Is The Difference Between Db and Dbi Frequencies?

The differences between DB and DBI are as follows: 

Many Parameters related to antennas are measured in Db (decibels) for instance gain is often specified in Db's ( decibels) and is written as 10dB. The Decibel system is used when quantities can vary by massive amounts. 

Antenna measurements

dBi

dB(isotropic) – the forward gain of an antenna compared with the hypothetical isotropic antenna, which uniformly distributes energy in all directions. Linear polarization of the EM field is assumed unless noted otherwise.

dBd

dB(dipole) – the forward gain of an antenna compared with a half-wave dipole antenna. 0 dBd = 2.15 dBi

What is Decibel?

The decibel ( dB) is used to measure sound level, but it is also widely used in electronics, signals and communication. The dB is a logarithmic unit used to describe a ratio. The ratio may be power, sound pressure, voltage or intensity or several other things. Later on we relate dB to the phon and the sone 

Loudness, phons and sones

The phon is a unit that is related to dB by the psychophysically measured frequency response of the ear. At 1 kHz, readings in phons and dB are, by definition, the same. For all other frequencies, the phon scale is determined by the results of experiments in which volunteers were asked to adjust the loudness of a signal at a given frequency until they judged its loudness to equal that of a 1 kHz signal. To convert from dB to phons, you need a graph of such results. Such a graph depends on sound level: it becomes flatter at high sound levels.

What is dBi?

In electromagnetics, an antenna's power gain or simply gain is a key performance figure which combines the antenna's directivity and electrical efficiency. As a transmitting antenna, the figure describes how well the antenna converts input power into radio waves headed in a specified direction. As a receiving antenna, the figure describes how well the antenna converts radio waves arriving from a specified direction into electrical power. When no direction is specified, "gain" is understood to refer to the peak value of the gain. A plot of the gain as a function of direction is called the radiation pattern.

Antenna gain is usually defined as the ratio of the power produced by the antenna from a far-field source on the antenna's beam axis to the power produced by a hypothetical lossless isotropic antenna, which is equally sensitive to signals from all directions. Usually this ratio is expressed in decibels, and these units are referred to as "decibels-isotropic" (dBi). An alternate definition compares the antenna to the power received by a lossless half-wave dipole antenna, in which case the units are written as dBd. Since a lossless dipole antenna has a gain of 2.15 dBi, the relation between these units is: gain in dBd = gain in dBi - 2.15 dB . For a given frequency the antenna'seffective area is proportional to the power gain. An antenna's effective length is proportional to the square root of the antenna's gain for a particular frequency and radiation resistance. Due to reciprocity, the gain of any antenna when receiving is equal to its gain when transmitting.

Directive gain or directivity is a different measure which does not take an antenna's electrical efficiency into account. This term is sometimes more relevant in the case of a receiving antenna where one is concerned mainly with the ability of an antenna to receive signals from one direction while rejecting interfering signals coming from a different direction.