Best place to buy BNC to RJ45 adapters?

[desiv]

You want a transceiver..
(You don't want a "balun"...)

I think I have some AUI to RJ45, but no BNC anymore...

Transition and Allied (something?) made them...

desiv

desiv

[desiv]

 Do you think I can use the following adapter if I find a BNC cable with two male ends???

Nope..  That's just an adapter or balun.
You need a transceiver...

I haven't used this brand and know nothing about quality, but a quick e-bay search shows this:

Nope, not that!!

Sorry, that was 10 base 2 to AUI, still searching..
Hmm, not seeing any on e-bay..  
You need 10base-2 to 10-base-t, but I'm not seeing one..  Wonder if you're going to have to go to AUI first?  
You don't also have an AUI on that card?  15-pin connector?

desiv
p.s.  They do exist.  
http://www.cdw.com/shop/products/Transition-Networks-Ethernet-Just-Convert-IT-10BASE-T-to-10BASE-2-Converter/876165.aspx?cm_mmc=ShoppingFeeds-_-GoogleBase-_-NetComm%20Products-_-876165_Transition%20Networks%20Ethernet%20Just%20Convert-IT%2010BASE-T%20to%2010B_TRR-J/E-CX-TBT-02
 But that's spendy and new...