Alison Microwave Ltd.

Designer and manufacturer

of robust-high-performance

GPS antennae and ancillaries

 

 

 

 

Alison Microwave Ltd.

12 Chapel Road

Lingwood

Norfolk

NR13 4NY

United Kingdom

 

 

sales@amlant.co.uk

 

Telephone: +44 (0) 1603 211876

Facsimile:   +44 (0) 1603 211536

Co.Reg. in England & Wales

No.1976804

 

Products

 

1. GPS and DGPS Antennae

2. Splitters

3. In Line Amplifiers

4. Iridium and RBGAN satellite antennae

 

1. GPS and DGPS Antennae

 

 

 

·         AML active antennae for GPS and DGPS reception incorporate hard anodised milled aluminium bases with 4mm thick GRP radomes, giving strength and superb corrosion resistance. Titanium bases with glass radomes are used for the deep sea submersible antennae, which are produced in partnership with Nautilus Marine Service GmbH.

·         The antennae elements are either dielectric patches or crossed dipoles optimised in conjunction with their radomes. The elements are matched and have right hand circularly polarised (RHCP) radiation patterns that are uniform in azimuth and offer good reception down to 5 degrees in elevation.

·         Standard antennae can be rendered inoperable due to interference close to the GPS and DGPS frequencies, a problem that will arise increasingly as the RF spectrum becomes more crowded. AML manufacture ranges of antennae with integral low-loss comb and interdigital filters, which are significantly better at suppressing near band interference than those with standard ceramic filters.

·         Each antenna has a low noise amplifier with an overall noise figure including filters of less than 3dB and a factory preset gain in the range 20 to 45 dB. Supply voltage is 3.3V to 20Vdc at typically 35mA. Other gains are available on request.

·         An independent evaluation of AML’s L1/L2 range of interdigital filtered antennae obtained decimetre precision using a high precision DGPS spot-beam service, a performance that compares favourably with those of antennae from other manufacturers. (Interdigital filters assist continuity of DGPS reception during high precision measurements).

·         All antennae are EMC approved, compatible with a wide range of GPS/DGPS receivers and tested against an appropriate reference model prior to dispatch.

·         JP614460-01 certification for selected antennae (AD410, AD420, AD490) representative of mechanical, filter and amplifier configurations used across full product range.

·         AML antennae are designed and manufactured in house using state-of-the-art facilities.  Consequently, custom requirements ranging from modification of existing products to the development of new antennae can be met efficiently.

 

 

 

 

          Description 

Filter

Pass-band (MHz)

Model

GPS antennae (for reception at 1575.42 MHz)

 

 

 

 

Standard GPS antenna with central stud mounted TNC connector on 90 mm (3.5") diameter base

Ceramic

1575.42 (centre)

AD221

 

Standard GPS antenna with N-type connector on 90 mm (3.5") diameter base

Ceramic

1575.42 (centre)

AD251

 

Filtered GPS antenna with 150mm (6") diameter ground plane

Interdigital

1570-1580

AD430/7080

 

Deep sea submersible antenna

Ceramic

1575.42 (centre)

AD450

 

DGPS antennae (for reception in the frequency range 1530 to 1560 MHz)

 

DGPS antenna with 150mm (6") diameter ground-plane

Comb

1530-1560

AD420/3060

 

DGPS antenna with 150mm (6") diameter ground-plane

Interdigital

1530-1541

AD430/3141

 

Basic DGPS antenna

Comb

1530-1560

AD316/3060

 

Combined GPS and DGPS antennae

(1530 to 1575.42 MHz)

 

GPS/DGPS antenna with 150mm diameter ground-plane

Comb

1530-1580

AD420/3080

 

Dual frequency antenna with 185 mm (7.5") diameter ground-plane

Dual Interdigital

1531-1541

1570-1580

AD440/

31417080

 

Submersible antenna with a comb filter for the frequency range 1530 to 1580 MHz.

Comb

1530-1580

AD480/3080

 

Basic DGPS/GPS antenna

Comb

1530-1580

AD316/3075

 

GPS and GLONASS combined antennae

(1575.42 to 1610 MHz)

 

Combined antenna with 150mm (6") ground-plane

Comb

1570-1610

AD420/7510

 

GPS L1/L2 dual frequency antennae

(1227.6 and 1575.42 MHz)

 

Standard L1/L2 antenna

Ceramic

1227.6, 1575.42 (centres)

AD410

 

Deep sea submersible version of AD410

Ceramic

1227.6, 1575.42 (centres)

AD470

 

GPS L1/L2 and DGPS combined antennae (1227.6 and 1530 to 1575.42 MHz)

 

Antenna with dual frequency interdigital filters

Dual interdigital

1222-1232 

1530-1580

AD490

 

Antenna with triple frequency interdigital filters,

as AD490, but also incorporating L1/L2 GLONASS reception

Triple interdigital

1217-1254 

1530-1541

1558-1611

AD491

GPS/DGPS and UHF combined antennae

Drone antenna with integrated receiver and UHF radio modem. The antenna element acts as both a receiver for GPS and a tuned transmitter for the radio modem at 458 MHz with no compromise to its electrical performance at either frequency.

Dual interdigital

1531-1541

1570-1580

AD400

Antenna for use with external  DGPS/GPS receivers and a UHF radio modem. The L-band and UHF frequencies are multiplexed enabling connection to the antenna with a single coaxial cable. An optional splitter is used  to separate the signals at the receivers.

 Dual interdigital

1531-1541

1570-1580

AD500

Antenna for use with external  DGPS/dual frequency L1/L2 GPS receivers and a UHF radio modem. The L-band and UHF frequencies are multiplexed enabling connection to the antenna with a single coaxial cable. An optional splitter is used to separate the signals at the receivers.

Triple

interdigital

1222-1232

1531-1541

1570-1580

AD540

 

Antenna for use with external GPS receiver, with low frequency (1.6 to 3.2 MHz) DGPS beacon reception  and a UHF radio modem. The L-band, UHF and low frequencies are multiplexed enabling connection to the antenna with a single coaxial cable. An optional splitter is used to separate the signals at the receivers. Build and appearance identical to AD500

 

Ceramic

(Interdigital optional)

1575.42

(centre)

AD530

GPS/DGPS and 2.4GHz combined antennae

 

Specification as AD440, with 2.4 GHz antenna.

Antenna for use with external  DGPS/L1 GPS receivers and a 2.4-2.483 GHz modem. The frequencies are either multiplexed enabling connection to the antenna with a single coaxial cable, or a separate connector can be provided for 2.4GHz . An optional splitter is used to separate the signals at the receivers.

 

 

 

Specification as AD490, with 2.4 GHz antenna.

Antenna for use with external  DGPS/ L1/L2 GPS receivers and a 2.4-2.483 GHz modem. Options as above.

 

 

 

      2. Splitters

·         These units are used to feed an antenna’s output to the GPS and/or DGPS inputs of one or more receivers. Active (with typically unitary gain) and passive splitters are available, with a DC pass through or block for each of the ports as required. Isolation between outputs is better than 20dB.

Description

number of outputs (n)

Model

Passive splitter

2,4,8, or 10 way

AD325/P/n

Active splitter

2,4,8 or 10 way

AD325/A/n

 

·         A long cable run between an antenna and receiver leads to significant signal attenuation and as a consequence in line amplification may be necessary. AML manufacture in line amplifiers typically with preset gains of 10 dB and 20 dB, with either a DC supply pass through (AD200/8) or a DC block (AD200/9) as required. It is recommended that the amplifier is placed near the beginning of the cable run.

Description

Gain (dB)

Model

In line amplifier with N-type connectors, 5 to 20V dc supply at 15mA maximum

10

AD200/8/10 AD200/9/10

 

20

AD200/8/20 AD200/9/20

Disclaimer: This site provides a summary of AML and may contain errors. Please contact AML for confirmation and prices. 

 

Privacy Policy

1. Important notice

This Privacy Policy describes how we obtain and use your personal data, why we are allowed to do so by the law, who has access to your personal data and what your rights are. Please review it carefully.

We take your privacy seriously and use your personal data as further explained in this Privacy Policy. We are the “controller” of the personal data you provide to us.

You have the right to object to us processing your personal data for our legitimate business interests or for direct marketing purposes (including any related profiling). For more information about your rights and how you can exercise them, please see the section Your rights.

2. Personal Data we may collect and why

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We may collect the following data about you:

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To provide you with the products and services you have requested
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We use the contact details you have provided to us so that we can communicate with you about the products and services that we provide, including to let you know about major changes to those products and services or to the Trading Terms or Terms of Trading between us or to any related information.

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If you have provided your consent or we otherwise have the right to do so, we may use your contact details to send you direct marketing and keep you informed of promotional offers by email, SMS, post or telephone relating to our products and services.

You can unsubscribe from our direct marketing at any time by contacting us.

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To maintain our records and improve data accuracy
Like any business, we process personal data in the course of maintaining and administering our internal records. This includes processing your personal data to ensure that the information we hold about you is kept up to date and accurate.

To respond to enquiries, complaints and disputes
We use the personal data we hold about you to help us respond to any enquiries or complaints you have made, or deal with any dispute which may arise in the course of us providing our products and services to you, in the most effective manner.

To investigate, detect and prevent fraud and comply with our legal obligations
In certain circumstances, we use your personal data only to the extent required in order to enable us to comply with our legal obligations, including for fraud detection, investigation and prevention purposes. This may require us to provide your personal data to law enforcement agencies if they request it.

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Data protection law requires us to only process your personal data if we satisfy one or more legal grounds. These are set out in data protection law and we rely on a number of different grounds for the processing we carry out. These are as follows:

Consent

In certain circumstances, we process your personal data after obtaining your consent to do so for the purposes of:

  • sending you marketing communications about our products and services;
  • sharing your name, email address, postal address and telephone number with our trusted business partners so that they may market to you about their own similar products and services;
  • conducting marketing research;
  • obtaining your credit score so that we can establish the best possible payment terms we are able to offer to you.

Necessary for the performance of a contract and to comply with our legal obligations

It is necessary for us to process your basic contact details, payment details and information about the business you represent for the performance of the Trading Terms or Terms of Trading between us. In particular, we rely on this legal ground to:

  • provide you with the products and services;
  • communicate with you about the products and services that we provide to you, including to let you know about major changes to those products and services or to the Trading Terms or Terms of Trading between us or to any related information;
  • provide and improve customer support; and
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If you choose not to give some or all of the aforementioned information to us, this may affect our ability to provide our products and services to you.

In certain circumstances, we also use your personal data only to the extent required in order to enable us to comply with our legal obligations, including to detect, investigate and prevent fraud.

Necessary for the purposes of our legitimate business interests or those of a third party
It is sometimes necessary to collect and use your personal data for the purposes of our legitimate interests as a business, which are to:

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  • comply with our contractual obligations to third parties;
  • develop and improve our Site to enhance the customer experience;
  • train our staff so that we can provide you with a better customer service;
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Where we think there is a risk that one of your interests or fundamental rights and freedoms may be affected we will not process your personal data unless there is another legal ground for us to do so (either that we have obtained your consent to the processing or it is necessary for us to perform our contract with you or to comply with our legal obligations).

5. Who we share your personal data with

We may provide your personal data to our suppliers and service providers, including other companies in our group, who provide certain business services for us and act as “processors” of your personal data on our behalf. In addition, we may disclose your personal data if we are under a duty to disclose or share your personal data in order to comply with any legal obligation, or in order to protect the rights, property, or safety, of our business, our customers or others. This includes, in specific cases, exchanging information with other organisations for the purposes of fraud protection.

In some cases, the personal data we collect from you may, for the purposes set out above, be transferred outside the European Economic Area (EEA) and such destinations may not have laws which protect your personal data to the same extent as in the EEA. We are required by data protection law to ensure that where we or our “processors” transfer your personal data outside of the EEA, it is treated securely and is protected against unauthorised access, loss or destruction, unlawful processing and any processing which is inconsistent with the purposes set out in this Privacy Policy.

6. How long we keep your personal data for

We retain your personal data for no longer than is necessary for the purposes(s) for which it was provided. What this means in practice will vary between different types of data. When determining the relevant retention periods, we take into account factors including:

  • legal obligation(s) under applicable law to retain data for a certain period of time;
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  • potential or actual disputes; and
  • guidelines issued by relevant data protection authorities.

Otherwise, we securely erase your personal data from our systems when it is no longer needed.

7. Your rights

You have the following rights regarding your personal data:

Rights

What does this mean?

1.    Rights to be informed

You have the right to be provided with clear, transparent and easily understandable information about how we use your personal data and your rights. This is why we are providing you with the information in this Privacy Policy.

2.     Right of access

You have the right to obtain access to your personal data (if we are processing it) and certain other information (similar to that provided in this Privacy Policy). This is so you are aware and can check that we are using your personal data in accordance with data protection law.

3.    Right to rectification

You are entitled to have your personal data corrected if it is inaccurate or incomplete.

4.    Right to erasure

This is also known as ‘the right to be forgotten’ and, in simple terms, enable you to request the deletion or removal of your personal data where there is no compelling reason for us to keep using it. This is not a general right to erasure; there are exceptions.

5.    Right to restrict processing

You have the right to ‘block’ or supress further use of your personal data in certain circumstances. When processing is restricted, we can still store your personal data, but may not use it further.

6.    Right of data portability

You have the right to obtain and reuse your personal data in a structured, commonly used and machine-readable format in certain circumstances. In addition, where certain conditions apply, you have the right to have such information transferred directly to a third party.

7.    Right to object to processing

You have the right to object to us processing your personal data for our legitimate business interests or for direct marketing purposes (including in each case any related profiling).

8.    Right to withdraw consent to processing

If you have given your consent to us to process your personal data for a particular purpose (for example, direct marketing), you have the right to withdraw your consent at any time (although if you do so, it does not mean that any processing of your personal data up to that point is unlawful).

9.    Right to make a complaint to the data protection authorities

You have the right to make a complaint to the Information Commissioner’s Office (ICO) if you are unhappy with how we have handled your personal data or believe our processing of your personal data does not comply with data protection law.

8. How to contact us

If you would like to exercise your data protection rights or if you are unhappy with how we have handled your personal data, please feel free to contact us by using the details set out on our Site.

If you’re not satisfied with our response to any enquiries or complaint or believe our processing of your personal data does not comply with data protection law, you can make a complaint to the Information Commissioner’s Office (ICO) by:

  • writing to: Information Commissioner’s Officer, Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF;
  • calling: 0303 123 1113; or
  • submitting a message through the ICO’s website at: ico.org.uk
  •  

9. Changes to this Privacy Policy

This Privacy Policy was last updated on 25th May 2018.

This Privacy Policy may be updated from time to time, so you may want to check it each time you provide personal data to us