Fenix describe Advanced Pulse-Frequency Transmission System (APF) ?

fenix store

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Great question! The APF (Advanced Pulse-Frequency) Transmission System is a new, proprietary feature developed by Fenix and first implemented on the new TK11 TAC flashlight. This is a brand new, industry-leading technology that you won't find anywhere else!

The APF system allows Fenix to push the envelope in a lot of ways.
-Traditional switches are limited by current, making it difficult to achieve brightness above 2200 lumens in a single-battery light. APF makes it much easier to achieve higher brightness levels, which is great now that we're seeing a lot of lights using the more powerful 21700 battery options.
-APF also makes it easier for Fenix to implement multi-functioning tail caps like what is seen in the TK11 TAC.
-APF allows a simpler body design as well. Traditionally, flashlight bodies with multi-function tail caps have needed to have double-layer bodies for proper current conduction. APF allows a single-layer body to achieve more reliable lights.


In short, APF allows tail-switch controlled flashlights to reliably reach outputs above 2000 lumens and makes it easier to implement multiple functions in a tail cap.
It can work with either mechanical or digital (electronic) switches.

We can see the benefits of the APF system with the unique multi-setting rotary design on the TK11 TAC.
The APF system does not require HALL effect sensors so it is not affected by magnetic fields. It allows for features like the rotary switch to adjust the settings of the TK11 TAC to choose between Lock, Duty Mode, or Tactical Mode.
The setting of the rotary switch on the tail cap is communicated via APF through the body to the control board in the head. The control board then translates the button presses into output changes based on the setting.
 
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chillinn

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No disrespect intended, but you about answered everything but the question. Those are benefits of Advanced Pulse Frequency Transmission, not what APF actually is. I think that what lumen aeternum and everyone else want to know is what APF is, specifically.
 
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KITROBASKIN

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When fenix store says the APF Transmission System is proprietary, seems like we can expect some mystery, right?
Does the electrical flow somehow vary to send output change signals to the control board?
 

lumen aeternum

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> -APF allows a simpler body design as well. Traditionally, flashlight bodies with multi-function tail caps have needed to have double-layer bodies for proper current conduction. APF allows a single-layer body to achieve more reliable lights.
>

So what happens when two APF lights are touching each other? Will using the switch on one also send a signal to the other? This would be kind of cool - you could solder a wire to connect several lights, to achieve a bank of lights.
 

Tac Gunner

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No disrespect intended, but you about answered everything but the question. Those are benefits of Advanced Pulse Frequency Transmission, not what APF actually is. I think that what lumen aeternum and everyone else want to know is what APF is, specifically.

X2.

Interesting benefits but I think a lot of us want to know the how and why of the inner workings.

Anyways, it sounds like this technology should allow for the E35 V3.0 to get a tailswitch upgrade and a true sub 1 lumen moonlight mode!
 
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