The 9R59DS was economy type of 9R-59D.
All tube receiver gives a great account for itself until you hit the top band. Injection from the local oscillator fades away above about 20-23Mhz and the unit basically goes deaf. I have tried new and different LO tubes and managed to get it working properly with a cathode follower and optional regulator tube. For the vintage, a good receiver.
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