Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.
MX-6707 Antenna Matching Unit (AMU) usually, which with the whips previously mentioned makes up AS-1729. Lots on Ebay regularly - some new. You can also use AS-3900/ AS-3900A which is the ant. system for the SINCGARS radios - all bolt in the same hole.
Other antenna systems were used depending on what radios were in the M1009, but that's the common setup.