Appears to be a folded dipole type antenna in the higher HF range. Looks like there are two of them so might be for a repeater.
- 'Doc
I'll take a "swag".....
Old 40-50 Mhz public service bands....work good for 6m(shorten)...
10m they would be damn near 16ft or longer...
All the Best
BJ
PS: Judging by those "Short Stand-Offs"...those are made for Non-Conductive mast mounting....(?).,...maybe a 4/folded Dipole set-up....
That's half the package....
Need 2 more antennas/Mast/Power divider and matching harness....(?)