Local Cryptic

[CrypticCath]

Stuck on a few I'm sure I should be able to solve but can't!

I think my letters are correct......


Islander's radio can be disturbing(9) ?R???S?N

Slashed Kelvin in return for being nourished(6) K?I?E?

Savage hesitantly entered Cornish river(5) ?E??L

Made notes when one had not had a meal(8) ??G?T?T?

[sandyRoe]

2 knifed

[cupid04]

knifed

[ubasses]

feral

[cupid04]

feral

[Calibax]

1 Orcadian (anag. of radio can)

[iminoz]

annotate?

[CrypticCath]

I think it must be that,iminoz,my 26 was wrong. Does "usance"make sense for "Can use another old custom?"

[cupid04]

Only that it's an anagram?

[Captain2]

us·ance (yo̅o̅′zəns)
n.
1. The length of time, established by custom and varying between countries, that is allowed for payment of a foreign bill of exchange.
2. Use.
3. Usage; custom.
4. Interest paid on borrowed money.

[CrypticCath]

Many thanks to you all, I thought of Orcadian but my 2 across was wrong which I've now rectified.

[CrypticCath]

Thanks,Captain2,I shall mark yours as the best answer...though I'm extremely grateful for them all.