Does anyone have a part number or found one on Ebay. I cannot seam to find it or 1
That antenna has the BNC connector. Part #20-283.
If you dont have the adapter then you wont be able to use it. I thought they had the SMA version of it, but I cant find it.
If you want to really be cheap the find you a copper wire the same size as the hole, cut it to length, and poke it in the hole. You may have to tape it up or something to secure it.
Antenna Length Calculator
I don't think you'll find a cheaper one even if it used. These RS-800 antennas are well known by many RRDB members to be excellent antennas given their cost. They are probably the most inexpensive option one can add to a scanner to get decent 800 Mhz coverage.
However, with the slow (or not so slow) demise of RS stores, it might not be a bad idea to stock up on a few of these antennas. I own 5 or 6 but if I see one at a RS, I usually buy it.
Steve AA6IO