Pos. Red name origin

[OldSchoolLurker]

I’ve wondered this for a long time and am hoping there might be some insight here.

Where did the “positive” in pos. red iridium come from? As far as I know there are no other iridium’s with either a positive or negative identifier.

Maybe it just sounded cool? I believe black and blue iridium predate the red, so why not just use “red iridium” to follow suit?

Can’t wait to learn and hear your responses.

 

[qtrain23]

I’ve wondered this for a long time and am hoping there might be some insight here.

Where did the “positive” in pos. red iridium come from? As far as I know there are no other iridium’s with either a positive or negative identifier.

Maybe it just sounded cool? I believe black and blue iridium predate the red, so why not just use “red iridium” to follow suit?

Can’t wait to learn and hear your responses.

There’s technically a -red iridium lens too

 

[OldSchoolLurker]

Any idea where I can find photos? Or know what frame they were available on?

 

[Jetace11]

@F80Phil , dont you have + red and -red heaters?

 

[TNGoldbeard]

I assumed it’s because it is on the upper end of red on the spectrum.

 

[TNGoldbeard]

 

[TNGoldbeard]

 

[MicahS]

I’ve wondered this for a long time and am hoping there might be some insight here.

Where did the “positive” in pos. red iridium come from? As far as I know there are no other iridium’s with either a positive or negative identifier.

Maybe it just sounded cool? I believe black and blue iridium predate the red, so why not just use “red iridium” to follow suit?

Can’t wait to learn and hear your responses.

Red iridium existed and predates positive red by a year or two. A few of the first gen m frames came with red iridium. I think it was replaced with + red.

- red iridium is clear lens with + red iridium, so imagine ruby clear

 

[Phil da Prototypist]

@F80Phil , dont you have + red and -red heaters?

Yes I do. In vented heater both pos red a. The mention neg red

 

[Phil da Prototypist]

Red iridium existed and predates positive red by a year or two. A few of the first gen m frames came with red iridium. I think it was replaced with + red.

- red iridium is clear lens with + red iridium, so imagine ruby clear

+red non vented the other is the “ -red “ ruby clear.