BNC to RJ-45 adapter?

[Kaido]

I have an older computer with a BNC network adapter on it. I have no experience with those things; is there any way I can get a BNC to RJ-45 Ethernet adapter? I did some searching but they only seem to exist for CCTV cameras; I'm not sure if they'd work for actual network connections. Anyone care to shed some light on this?

 

[nweaver]

this requires more then a simple jack, as thinnet was very different then UTP

get a new card...

 

[Kaido]

Originally posted by: nweaver
this requires more then a simple jack, as thinnet was very different then UTP

get a new card...

The system is too complicated to replace the card. My best solution is to get an adapter. I'm upgrading the network to 10/100 Ethernet and the previous 10 Hub has some sort of serial to BNC adapter on the rear to make the server's BNC connector talk to the rest of the network. Since it's on a rack, I'd love to get rid of that remaining old hub and get a more compact adapter.

 

[RebateMonger]

Here's what you are looking for.
But it's not for sale at Amazon and they aren't made anymore. Hopefully you can find some old stock or a used one. There's one for sale on eBay now.

Note that Thinnet maxes out at 10mbps. Also, if you run connections between the NIC and other devices, you need a "Tee" and a "Terminator" at each end. You aren't supposed to just plug the Thinnet cable directly into the BNC connectors on the NIC or the other components.

 

[Kaido]

Originally posted by: RebateMonger
Here's what you are looking for.
But it's not for sale at Amazon and they aren't made anymore. Hopefully you can find some old stock or a used one. There's one for sale on eBay now.

Note that Thinnet maxes out at 10mbps. Also, if you run connections between the NIC and other devices, you need a "Tee" and a "Terminator" at each end. You aren't supposed to just plug the Thinnet cable directly into the BNC connectors on the NIC or the other components.

Yikes! Thanks for the lead Can you post the eBay link? I can't seem to find it. I'd definitely be interested in a smaller device, that way we can put the 24-port hub with the adapter on the back away in storage as backup.

Edit: Nevermind, found it! Had a hard time finding the "DE-855" model number at first

 

[Kaido]

Actually, would this work?

http://www.amazon.com/exec/obidos/ASIN/B000051201/pricegrabbercpc14-20/ref=nosim

 

[netsysadmin]

Yup!

 

[Kaido]

Originally posted by: netsysadmin
Yup!

Nice, I even found a rack mount for it over at Buy.com. Awesome! Thanks for your help everyone

 

[spidey07]

Make sure one end of the BNC cable is grounded.
Make sure to use a 50 ohm coaxial cable.

All of these are required for 10 base-2

Don't forget the terminators, either.

 

[marulee]

BNCs differ from many connectors because of their snap-lock architecture, which keeps the plug firmly in its socket.

You need a pin and slot (female and male)
You might also need 'lock' which will locking the pin to attach it on your unit!

 

[Kaido]

Just an update - got everything working, thanks again for the help everyone! I ended up picking up an Allied Telesyn Centrecom AT-MC15-10 BNC to RJ45 converter, plus a similar D-Link model (DE-855) for backup. Buy.com had the AT-MC15-10 transceiver plus a 19" rackmount kit and Ethernet cable for about $130; I picked up the D-Link used off eBay for $10 or $15 that I'm keeping as a spare.

It has two options: terminated/non-terminated and MDI/MDI-X. I believe MDI is for direct connection to computer or router, while MDI-X is for connection to a switch or hub (the manual explains the internal wiring scheme). It worked when we switched it over to terminated. Everything is peachy now and we are just using a single adapter to get our old database server on our new network. 10/100 Ethernet is blazingly fast compared to our old setup