The other day I purchased a HW 150 PVR ATSC OTA digital converter on sale for $50.
It worked great right out of the box. I scanned in 27 channels, a mix of Toronto, Hamilton and Buffalo with the CM 4221 on the roof.
The PVR works well with a USB stick.
One issue was the EPG was displaying the date as 5 days ago. A known glitch according to the Mediasonic forum web site.
I emailed the Mediasonic help desk Sunday night. Monday, before noon, I received a reply with new software attached. Wow that is what I call customer service!
The updated software, which was easy to load, corrected the issue.
So far every feature appears to work correctly. I’ll have to try the other PVR features including an external HDD.