Can confirm. I did some work on a TRS-80 in a Radio Shack store (inventory on cassette tapes!). The “trash 80” as it was called would interfere with the stereo

Can confirm. I did some work on a TRS-80 in a Radio Shack store (inventory on cassette tapes!). The “trash 80” as it was called would interfere with the stereo equipment in the store, the manager would have to turn the little computer on the counter off to demo a receiver.