Hi Gina, you did very well with your interpretation. However, there is a problem which is not your fault but actually ours. We failed to update the dictionary with the positive aspects of symbols when it comes to the sizes of positive symbols. We will update this in the near future.
A huge positive symbol (like the tuner radio) speaks of a great or huge spiritual blessing or a huge positive aspect with great and good spiritual results or consequences. So in this case God is confirming that this person, through his actions and obedience and willingness or commitment by seeking God’s face, has dramatically increased his ability to hear God, and to receive revelations from God.
So I say again, it was not your fault. We will update the online dictionary as well as the paid version of the dictionary as soon as we can. I already updated your interpretation. Apart from this, your interpretation is spot on. Well done!