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To 40 GHz

Frequently Asked Cable Questions
What are the main considerations when selecting a cable?

Can I get both low insertion loss and high frequency?

What do we need to consider when selecting semi rigid or conformable cable?
How easily can conformable cable be shaped?
How easy is it to strip low loss flexible cable?
How do we tell what the power rating is for a cable?
We need formed semi rigid cable in small quantities and find it difficult to get a company to respond to our needs. What is the solution?
We need delay lines to be made to very tight dimensional tolerances. Can you do that and how are they held into place?
We use a number of test cables and our technicians in the lab seem to break them way too often. What can we do to resolve this problem?
We develop new products all the time and they usually need some coax cable. Since we are never quite sure of what we actually need who can we trust to offer the best solution?

FREQUENTLY ASKED CABLE QUESTIONS 

Q. What are the main considerations when selecting a cable? Back to Top
A. It's all about performance and frequency. The lower the desired insertion loss in a cable, the larger the cable diameter. The higher the frequency, the smaller the cable and the higher the insertion loss.


Q. Can I get both low insertion loss and high frequency? Back to Top
A. There is always difficulty at the extremes, but, with low loss cable and good quality connectors an acceptable compromise can usually be achieved.


Q. What do we need to consider when selecting semi rigid or conformable cable? Back to Top
A. Both should have the same electrical specification, but semi rigid cable should not be re-formed. Even with conformable cable re-shaping should be kept to a minimum. Also, conformable cable is more prone to RF leakage than semi rigid cable.


Q. How easily can conformable cable be shaped? Back to Top
A. Conformable cable is specifically designed to be shaped by hand. This ability is achieved by tinning the outer braid of the cable resulting in a cable that offers little resistance to shaping.


Q. How easy is it to strip low loss flexible cable? Back to Top
A. Low loss flexible cable is the most difficult to strip cleanly and accurately because the soft dielectric material does not keep the braid and or foil in place during the stripping
operation. Exceptions to this are cables with foam PE dielectric material.


Q. How do we tell what the power rating is for a cable? Back to Top
A. Cable manufacturers specify individual power ratings. Power is inversely related to the operating frequency.


Q. We need formed semi rigid cable in small quantities and find it difficult to get a company to respond to our needs. What is the solution? Back to Top
A. Talk to us. We can generally produce just one cable assembly economically due to our manufacturing flexibility. Making formed cable configurations is, in fact, one of our specialties.


Q. We need delay lines to be made to very tight dimensional tolerances. Can you do that and how are they held into place? Back to Top
A. Yes. Most delay lines have to fit into a pre-designated space and have to be made to very tight dimensional tolerances. We have made thousands of delay lines to very tight specifications. We use a variety of methods to captivate them depending upon customer specifications that are usually determined by temperature extremes in the operating environment.


Q. We use a number of test cables and our technicians in the lab seem to break them way too often. What can we do to resolve this problem? Back to Top
A. The solution is to use FLRST "Test-Flex" cables. Our spiral steel armored cable is an excellent choice in environments where reduced flexibility is not an issue. In environments where greater cable flexibility is required our abrasion resistant nylon armored cable is the answer especially where outstanding reliability and durability are essential.


Q. We develop new products all the time and they usually need some coax cable. Since we are never quite sure of what we actually need who can we trust to offer the best solution? Back to Top
A. FLRST policy is to always offer our customers the most cost effective solution. This often requires our engineers to understand your performance needs. Once this is done we customize a solution for you. There is no cost for this service. We want to earn your business.





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