If they are still functional, look for a Marine Consignment store in your locale. While the equipment may no longer have met your needs, if still functional it might easily be useful to others fitting out their boats on a tight budget. As a matter of courtesy to others, don't try to pawn off dysfunctional equipment. Turn it over to the eScrap recycle center at your local waste collection site.I have all the old electronics after a refit on a 78' Little Harbor. Where do I find a market for the used electronics. TIA
Good advice ... try Ebay.Sell it on Ebay. Just make sure it's accurately described, whether working or not working. Someone might be most grateful for a broken instrument for spares, as long as they know what they are getting.