This illustration appeared 80 years ago this month, in the ad from Hytron Radio and Electronics Corp., in the October 1945 issue of Radio Service Dealer.

The ad pointed out that the 2-1/2 meter band had just reopened to hams, and dealers were probably already seeing the impact of hams coming in to buy. They pointed out that demand was sure to grow. Before the war there were 60,000 hams, but QST estimated that would grow to 250,000 within five years.

That meant that dealers should stock Hytron tubes, which had been advertised in QST. And as new tubes were announced, especially for VHF and UHF, dealers should add them to their stock.