I'd be very impressed there's a lot of cable in these small things but I
suppose that is possible and it automatically reduces the length.

On Mon, Aug 26, 2024 at 5:41 PM <[email protected]> wrote:

> Maybe the cheap China one has one built in.
>
>
>
> *From:* Josh Luthman
> *Sent:* Monday, August 26, 2024 3:19 PM
> *To:* AnimalFarm Microwave Users Group
> *Subject:* Re: [AFMUG] fiber patch cables
>
> People say you need a launch cable but our cheap china OTDRs have no
> issues seeing the connector at the end of the patch cable and stuff
> beyond.  I bought a big launch cable back in the day and never use it
> anymore.
>
> Might be different with AE?
>
> On Mon, Aug 26, 2024 at 5:16 PM <[email protected]> wrote:
>
>> Only minimum length I know of is the OTDR dead zone.  If that is a
>> problem you purposely lengthen the cable with a launch cable.
>>
>> *From:* Josh Luthman
>> *Sent:* Monday, August 26, 2024 1:59 PM
>> *To:* AnimalFarm Microwave Users Group
>> *Subject:* Re: [AFMUG] fiber patch cables
>>
>> Reddit is wrong.  Gasp.
>>
>> Connectors are loss, there is more loss in either one of the connectors
>> than there is the single mode glass.
>>
>> Between a switch/router in a rack what I see all the time is long (like
>> 5/10/15 feet) cables and then put the slack in a loop along the posts.
>>
>> On Mon, Aug 26, 2024 at 1:19 PM TJ Trout <[email protected]> wrote:
>>
>>> Patchbox makes some great products, their fiber system is pretty slick
>>> but expensive.
>>>
>>> Cable length is irrelevant it's optical budget / Rx signal strength.
>>> Normally on 2-20k LR optics you are ok with any length cable, 40km+ needs a
>>> pad on short spans. (Attenuator)
>>>
>>> On Mon, Aug 26, 2024, 8:29 AM Ken Hohhof <[email protected]> wrote:
>>>
>>>> Is there a minimum length for a single mode fiber patch cable?
>>>>
>>>>
>>>>
>>>> I have been using 1 meter cables and they are almost always too long,
>>>> I’m talking about going between routers and switches in a rack, stuff like
>>>> that.  I see that FS sells 0.5 meter cables, but I saw somewhere like maybe
>>>> on Reddit someone claiming there was a minimum length.  Given SM fiber and
>>>> LR optics, I don’t see how 0.5 or 1.0 meter would be different they are
>>>> both essentially zero length.
>>>>
>>>>
>>>>
>>>> Probably there’s some kind of cable tray or cable management solution I
>>>> could be using but I’ve never liked such things.
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