Relay part substitute

[cryptlabs]

Hello,

I'm trying to fix a radio hf transceiver. The part which i need to replace is obsolete and not available anymore.

Fujitsu FBR321D012 Relay.

What can i get to replace this relay.

Regards

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[gadget73]

Do you have a datasheet or any spec info on this?  That would help a huge amount. 

Also knowing if there are any particulars that are a limiting factor would be good.  Can the replacement be physically bigger, or does it need to plug into a socket that you can't rewire, anything along those lines.