Help! need a 4mtr RJ11 straight plug cable

[Merlin66]

I ordered this cable from ebay but it came with RJ12 plugs which are too wide to fit the RJ11 socket I need to use.
(The RJ11 4p4c plug is the same as the plug found on the curly phone handset cable.)
Can anyone help me or recommend a cheap supplier......

[AndrewJ]

Gday Ken
Just buy a crimper for a few bucks and make yr own.
You wont look back :-)


Andrew

[Merlin66]

Andrew,
Actually I do have a crimper in the shed but no RJ11 plugs..... they seem to be around $10 plus post for 10 off - lot more than an ebay cable....

[acropolite]

Ken if you PM me with your address and cable length I'll make one up for you. I assume you just want 4wire flat, and is the cable config straight through or mirrored?
i.e. pin 1- pin 1 or is it pin 1- pin 4 etc. I'll also send you some RJ11 plugs.

Phil

[AndyG]

Hello Ken,


I've bought a fair bit of stuff from 4Cabling, quite happily.
https://www.4cabling.com.au/rj11-4p4c-crimp-plugs-10-pack.html


Edit: Can't beat the kind solution from Phil!

[Merlin66]

Phil, and others....
Thanks for the very kind offer....
Further research shows that the plug I'm actually looking for is a RJ9 4P4C not the RJ11 I thought.....
(The RJ9 is much narrower than the RJ11)

Phil,
not sure if you can still assist Re RJ9 plugs but I'll PM you.....

[AndrewJ]

Gday Ken
Jaycar have em at $2.50 for 5 ????
https://www.jaycar.com.au/rj11-telephone-plugs-for-stranded-cable-pk-5/p/PP1430




Andrew

[Merlin66]

Andrew,
Yeah I saw those....but the projects actually needs RJ9 connections...the RJ11/12 don’t fit the available sockets.....

[Merlin66]

Phil,
PM sent.....

[acropolite]

Check yout messages Ken.

FWIW, the definition of RJ plugs is a bit rubbery, RJ9 and 10 aren't official definitions, in Australia, most suppliers refer to the 4P4C plug that is on a curly handset cord as an RJ11, the slightly wider 6P6C and 6P4C are generally referred to as RJ12.
RJ45's are the 8 pin connectors used on Ethernet flyleads, they too are available with lesser pins in the same width (e.g. 2 pins) but are still generally referred to as RJ45 plugs.

[Merlin66]

Phil,
Thanks for the info, appreciated.
We may call the curly plug an "RJ11" but the equivalent "RJ11" from eBay actually supply an RJ12 (wider) plug.....

[AndrewJ]

Gday Ken

Not sure you are correct there.
As mentioned, the Rxx notation is very woofy in its usage

I always look at if they are 6p6c, 6p4c or 4p4c



The ones i linked to are specifically noted as 4p4c
I have never heard of 2 different widths for these???


Andrew

[Merlin66]

That's the problem!!
https://www.ebay.com.au/sch/i.html?_nkw=telephone+cable+rj9&ul_noapp=true

https://www.ebay.com.au/sch/i.html?_nkw=telephone+cable+rj11&ul_noapp=true

Both 4P4C but different sizes....
(RJ9 on left, RJ11 on the right)

[AndrewJ]

Gday Ken

Nope. The one on the right is a 6p4c
ie it has "provision" for 6 pins but only the centre 4 are used
Andrew

[Merlin66]

Hmmm,
The RJ11 4P4C cables on offer are all the same - probably really an RJ12 (6pin) with the 4 connect. Should be called a 6P4C?????

The RJ9 example is a 4P4C sized "module"

(Readers may be wondering why this is an issue.....well, the SW electronic focus motors are fitted with RJ9 sized sockets; if you want to change the cable between the hand controller and the motor (to make it longer...) then you need the RJ9 sized plug)

[AndrewJ]

Gday Ken
If they specifically note 4/4 then yes.
Thats why i dont always believe the Rxx notation used, as they change between countries and manufacturers.
ie its a standard that isnt standard :-)
Correct

Andrew

[billdan]

I use the Skywatcher electric focuser and I can confirm the 5 metre RJ11 cable I purchased from Jaycar connects to the motor and its controller box.

The only downside for me is that the cable I purchased is a curly cable which is a lot heavier than a flat cable. As it acts like a spring, you put the controller on the floor and it skates along the ground and rests next to the tripod.

[Merlin66]

Yeah,
May be called an "RJ11" but all curly (telephone handset) cables here in Oz are the RJ9 4P4C.....
Just be cautious trying to order the same on eBay...

[acropolite]

The definition of some plugs is rubbery, a bit like consultant's reports, shop around until you find the one that suits. Wikipedia says that RJ9 and 10 aren't standards, i.e. they're urban myth, don't like that definition, just modify the wiki entry, it's that easy. We've been buying and using 4P4C plugs for 3 decades now, most of our suppliers sell them as RJ11, all of my associates in the telephony industry know them as RJ11. Altronics list them as RJ10 possibly because the Chinese they buy from market them as such. Here's one suppliers definition, it is what most in the industry regard as correct. https://www.ji.com.au/telecomsplugs/

[Merlin66]

I'd like to publicly thank Acropolite (Phil) for all the help and assistance he gave me to resolve this issue of RJ9 (!!) cables.

Greatly appreciated.

(Finally got some clear sky this morning to check out the operation of the "semi-remote" focusing [and a sexy new flat RJ24 cable to the mount] the seeing was very average but the ability to sit inside and get effective control of everything was an absolute pleasure......)
Onwards and Upwards.