[TowerTalk] Bird Model 74 coaxial switch wear out mechanisms?

[Gedas]

I cannot give you a formal number from Bird but I have used dozens of 
these for over 30 years for tempest test applications. It would not be 
uncommon for a technician in our lab to use one of these switches at 
least 100 times a day, year after year, decade after decade w/o any 
issues. We would as a matter of routine maintenance spray the contacts 
with contact cleaner and verify their I.L. in all positions. They are 
_extremely_ robust. I use several for my own RF applications here at home.

Gedas, W8BYA

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 12/11/2019 12:19 PM, al.n6ta at gmail.com wrote:
> Anyone know the center contact in the movable part wears out after many
> mating cycles?  I would use one of these to change antennas daily, and
> multiple times a day.  Not sure of its design purpose and if this is
> 'abuse'.
>
> Thanks!
>
> Al-N6TA
>
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