This a very early single conversion shortwave receiver, made by GRE
and sold through Radio Shack. The DX-150 had three variants, and
was eventually replaced by the DX-160.
| Receiver | Manufacture Dates | Comments | |
| DX-150 | 1969 - 1971 | 30 semiconductors | |
| DX-150A | 1969 - 1972 | FET front-end | |
| DX-150B | 1972 - 1974 | Five FETs, mechanical filter | |
| DX-160 | 1975 - 1980 | One integrated circuit |
GRE has a page here that describes the DX-150 and DX-160 models.
W4JBM has a good page with a bit more information about the DX-160 that you can see here.
You can download a copy of the Service Manual for the
DX-150B in PDF by clicking
