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Frequently asked questions

dot2How can I judge whether or not a Quick-Lock QMA or HPQN design is a good one?
dot2 Why is QMA backward compatible with QMA, but HPQN is not backward compatible with QN?
dot2 What affect does HPQN's inability to mate with QN have on the design of RF/Microwave components and equipment?
dot2 Why did we specially design a Mini-QMA?
dot2 Our application is inside, so shouldn't we use a QMA or HPQN that is not waterproof?
dot2 How is our seal design different from other waterproof sealing designs?
dot2 Are there any patent issues between our QMA, Mini-QMA or HPQN designs and other quick lock connectors?
dot2 What are the benefits of joining the Quick Lock Forum?




dot2 How can I judge whether or not a Quick-Lock QMA or HPQN design is a good one?
A successful Quick-Lock connector QMA and HPQN design should be based on the following principles:
1) Fast, simple mating and de-mating.
2) Maintain the electronic performance of the original SMA and type N.
3) Smaller dimensions.
4) Waterproof seal (IP68).
5) cost effective.

dot2 Why is QMA backward compatible with QMA, but HPQN is not backward compatible with QN?
From a design perspective it would be an easy matter to make HPQN backward compatible with QN, however we chose not to. In the case of QMA, its basic structural parameters and electronic performance are very close to that of the original SMA connector, so we believed it was necessary to make QMA backward compatible with this design. On the other hand, we considered it unnecessary to make HPQN backward compatible with QN for two reasons:
1) The electronic performance of QN cannot compare with the original type N connector.
2) In the type N connector, the inner conductor is 3.04 mm and the internal diameter of the outer conductor is 7.00 mm. These dimensions have proved sound in all manner of applications for tens of years. The QN design, where the inner conductor is 2.97 mm and the internal diameter of the outer conductor is 6.85 mm, completely abandons these structural parameters resulting in a great deal of work in redesign, retesting and verification. We believe that to not make use of the type N's original parameters is to go against the fundamental principles of industrial design.

dot2 What affect does HPQN's inability to mate with QN have on the design of RF/Microwave components and equipment?
There is no affect. The connector installation dimensions for RF components and equipment have no need to be altered. Furthermore, choosing HPQN has these added benefits:
1) It matches the electronic performance of the traditional type N connector.
2) It has considerably less volume.

dot2 Why did we specially design a Mini-QMA?
The length of the present QMA female (for panel and PCB) exceeds that of the traditional SMA, making it unsuitable for applications with limited space. Our Mini-QMA female (for panel and PCB) was specifically designed shorter, so as to allow it to be applied in these special situations.

dot2 Our application is inside, so shouldn't we use a QMA or HPQN that is not waterproof?
This is a common misconception, but in fact an RF connector that is not waterproof is not dependable. SMA, Type N, BNC, TNC, 7/16: these classic RF connectors all possess a waterproof seal because it is a fundamental necessity for maintaining their electronic performance over time. A waterproof seal does not only protect your connector from the water outside, it actually protects it from the air. The reality is that gas, water, dust, and other particles are all present in the air inside a room and can contaminate and corrode the internal part of the connector, influencing its electronic performance. For applications in important equipment like wireless base stations, connectors without a seal can actually cause complete system failure. Only a complete seal keeps the connector absolutely isolated from the outside environment, increasing the connector's life-span and ensuring consistent electronic performance.

dot2 How is our seal design different from other waterproof sealing designs?
The waterproof design in QMA, Mini-QMA and HPQN is an improvement on competing designs in terms of both sealing and life-span (See http://www.quicklockforum.org/?n=90)

dot2 Are there any patent issues between our QMA, Mini-QMA or HPQN designs and other quick lock connectors?
QMA, Mini-QMA and HPQN are all newly patented designs, which do not conflict in any way with other QMA or HPQN designs on the current market.

dot2 What are the benefits of joining the Quick Lock Forum?
We appreciate your interest in the Quick Lock Forum and we welcome the participation of all companies, ranging from RF manufacturers to end users. Members of the Forum can share in the following benefits:

RF Manufacturers:
dot2 The latest quick lock connector technology
dot2 The most economical manufacturing cost
dot2 The lowest available fee for use of the technology

End Customers:
dot2 The newest and best quick lock connector design
dot2 Reasonable prices
dot2 A wide range of quality manufacturing sources
dot2 Join in technical discussions with the world's top RF professionals on future Quick Lock Connector Solutions
We are currently in the process of establishing the rules and regulations of the Quick Lock Forum. During this process we welcome any of your questions, views or comments. Please email us directly at info@quicklockforum.org.