I picked this up a year or two ago when I was trying to repair a HP8648B, I ended up repairing the original module before this unit even arrived and so never used this one, I don't have a use for it and want to clear out stuff that might be useful to someone else, I believe that this module is in working condition as it was stated to be working when I purchased it, but is untested by me.
Item: HP8648 RF Signal Generator Module: HP08648-60115 Sig Gen Synth
I believe the same module is used in the B and C variant of the 8648.
I am willing to post internationally but I have no idea what that will cost, we would have to work that out after I know where it is going.
I am asking US$200 for the module payable via PayPal, which is less than what I paid for it originally, I just want it gone.