Yes, that is probably fine (mostly).
The point is to have only *one* grounding point for all equipment involved. If you have have ground at the antenna, and then another 100 feet awat at the house, you can have a difference in ground potential that can zap reception, if not destroy your electronics.
So if you ground with a single rod, and that sits close to the reciever, you should be fine.
Do note that you need to ground your electric installation as well (and you need to be a qualified electrician), or else you may create a potential difference to zap your electronics there too.