I had my fill of Hi Tec over 6 of 10 surface radios failing within 15 minutes of use. Their solution. I did something wrong. Crap.
They were for a childrens program. I had at that time 6 other radios with no failures.

Their Featherlie receivers were factory rejects also. "Being to rough plugging in and removing the channel plugs." More crap.

I do not got to bed with the same snake 3 times.