The cache is not at the posted coordinates.
I've been working on a series of caches by Oberon_Kenobi and I've learned a lot of things. Those caches are fun and are the reason for this cache. Can you solve this mystery and find the cache?
If you can convert the letters below to a URL, you may be able to find the cache. Best of luck.
HQ1KXNCZ1TFUYJM
Update 8/16/2023
I had to help someone solve this and when I was finished, I did not like how the clue was laid out. If you like it, it could still work for you. If not, here is what I consider a better clue. HQ AKW(K+1)E QA1 RJHU(K+1)
learned from GC6K8D5