02-13-2014, 05:06 PM
I'm surprised no one has said anything about the 620. As mentioned before the 20 is a easy set to work on but bear in mind that it is based on 1930 technology. On it's down side it has no avc, is a trf design used from the mid 1920's, and no shortwave. It's a fairly primitive set.
On the other hand the 620 is a superhet with automatic volume control. Along with this it is a three band set with a tuned rf amp stage making it fairly sensitive on all band. Both set use a dynamic speaker but the one it the 20 has a very stiff cone which causes it to have poor audio frequency response.
It is hard to find a good 20 that the speaker grille hasn't had serious repair work done to it, but for the enjoyment value I would go with the 620
Terry
On the other hand the 620 is a superhet with automatic volume control. Along with this it is a three band set with a tuned rf amp stage making it fairly sensitive on all band. Both set use a dynamic speaker but the one it the 20 has a very stiff cone which causes it to have poor audio frequency response.
It is hard to find a good 20 that the speaker grille hasn't had serious repair work done to it, but for the enjoyment value I would go with the 620
Terry
