Shown here from 75 years ago is the Heathkit All-Wave Radio. While the ad does not specify the model number, it is the Model K-2, which had recently replaced the similar K-1 which came out the previous year. The set runs on AC power, using one 1626 triode as the rectifier, and a second 1626 as regenerative detector. The 12A6 amplifies the audio to power either headphones or speaker (the only components you need to buy separately, as everything else is included).

There’s a very informative article at the Orange County Amateur Radio Club website by AF6C. At that site, you can find a schematic and more information. The ad shown here is from Heath’s October 1949 flyer.  The ad notes that the set can be built by either adults or boys–it apparently didn’t occur to them that a girl might want to build one. It had been successfully constructed by 10 year old boys and was billed as a great start in radio. Boys would enjoy it for years, and it had the added benefit of keeping the family radio for adult programs, while Junior listened to what he wanted.

It covered 550 kHz to 6 MHz, apparently with a single plug-in coil.  It sold for $8.75 plus shipping, which works out to $115.73 in 2024 dollars.  But chances are, Mom and Dad would be willing to cash in a war bond if it meant freeing up the family radio.